Sentence:  Due to the somewhat macerated specimens Michaelsen (1933) was not able to recognize the structure of the excretory system in the type species, however, he found it <WSD>meroic</WSD> at "W. beauforti". 
Meaning of the word marked with <WSD> tags:  (biology) Pertaining to nephridia that are formed by longitudinal or traverse fragmentation of a single original pair of embryonic rudiments in each segment.