Sentence:  In the southern portions of the State we have met with specimens of brown <WSD>tarantula</WSD> weighing a full Troy ounce, but these were of unusual size. The wood <WSD>tarantula</WSD> is the largest of all, occasional specimens weighing an ounce and a half, inhabits dead wood, is very active on a warm day, is found of sunning himself, and is quite courageous, leaping on a large lizard, with a perfect recklessness of consequences. 
Meaning of the word marked with <WSD> tags:  Any of the large, hairy New World spiders comprising the family Theraphosidae.