Torricelli languages
The Torricelli languages are a family of about fifty languages of the northern Papua New Guinea coast, spoken by about 80,000 people. They are named after the Torricelli Mountains. The most populous and best known Torricelli language is Arapesh, with about 30,000 speakers. The most promising external relationship for the Torricelli family is the Sepik languages. In reconstructions of both families, the pronouns have a plural suffix "*-m" and a dual suffix "*-p". History. The Torricelli languages occupy three geographically separated areas, evidently separated by later migrations of Sepik-language speakers several centuries ago. Foley considers the Torricelli  languages to be autochthonous to the Torricelli Mountains and nearby surrounding areas, having been resident in the region for at least several millennia. The current distribution of Lower Sepik-Ramu and Sepik (especially Ndu) reflects later migrations from the south and the east. Foley notes that the Lower Sepik and Ndu groups have lower internal diversity comparable to that of the Germanic and Romance languages, while internal diversity within the Torricelli family is considerably higher. Typological overview. Syntax. The Torricelli languages are unusual among Papuan languages in having a basic clause order of SVO (subject–verb–object). (In contrast, most  Papuan languages have SOV order.) It was previously believed that the Torricelli word order was a result of contact with Austronesian languages, but Donohue (2005) believes it is more likely that SVO order was present in the Torricelli proto-language. Torricelli languages display many typological features that are direct opposites of features typical in the much more widespread Trans-New Guinea languages. However, Bogia and Marienberg languages have SOV word order and postpositions, likely as a result of convergence with Lower Sepik-Ramu and Sepik languages, which are predominantly SOV. Torricelli languages also lack clause chaining constructions, and therefore have  no true conjunctions or clause-linking affixes. Clauses are often simply juxtaposed. Nouns. In Torricelli and Lower Sepik-Ramu languages, phonological properties of nouns can even determine gender. Like in the Yuat and Lower Sepik-Ramu languages, nouns in Torricelli languages are inflected for number, which is a typological feature not generally found in the Trans-New Guinea, Sepik, Lakes Plain, West Papuan, Alor-Pantar, and Tor-Kwerba language families. Classification. Wilhelm Schmidt linked the Wapei and Monumbo branches, and the coastal western and eastern extremes of the family, in 1905. The family was more fully established by David Laycock  in 1965. Most recently, Ross broke up Laycock and Z’graggen's (1975) Kombio branch, placing the Kombio language in the Palei branch and leaving Wom as on its own, with the other languages (Eitiep, Torricelli (Lou), Yambes, Aruek) unclassified due to lack of data. Usher tentatively separates Monumbo, Marienberg, and the Taiap (Gapun) language from the rest of the family in a 'Sepik Coast' branch. Foley (2018). Foley (2018) provides the following classification. Foley rejects Laycock's (1975) Kombio-Arapeshan grouping, instead splitting up into the Arapesh and Urim groups. Section::::"Glottolog" 3.4. "Glottolog" 3.4 presents a vastly different classification for  the "Nuclear Torricelli" languages. Pronouns. The pronouns Ross (2005) reconstructs for proto-Torricelli are Foley (2018) reconstructs the independent personal pronouns *ki ‘I’ and *(y)i ‘thou’, and *(y)ip ‘you (pl)’. Foley considers the second-person pronouns to be strong diagnostics for determining membership in the Torricelli family. Foley (2018) reconstructs the following subject agreement prefixes for proto-Torricelli. Lexical comparison. The lexical data below is from the Trans-New Guinea database.