55 



who died of phthisis in Richmond, Va. " About 

 twelve or fifteen cysts were found in the cellular 

 membrane of the muscles and in the integuments, 

 besides one which hung free from the inner surface 

 of the dura mater, near the crista galli. In the same 

 subject there were also numerous specimens of Trich- 

 ina spiralis." From Dr. Jeffries Wyman. 



Upon examination, Dr. Weinland found, that, in- 

 stead of two rows of hooks, the usual number, there 

 were three. He therefore proposed for it the name of 



Acanthotrias (axavda, tQsig). 



His description I copy from his " Essay on Tape- 

 worms : " 



" There are fourteen hooks to each of the three 

 rows, and the hooks of the different rows are different 

 in shape and size. The row of the largest hooks 

 (PL III. fig. 6, B) is the innermost, when the muzzle is 

 stretched out. These resemble the large ones of the 

 true Taenise : their total length is 0-153 mil. The length 

 of their foot, as I call that part which, being sub- 

 servient to a firm hold, is buried in the tissue of the 

 muzzle, is 0-090 mil. The hooks of the next or sec- 

 ond row (PL III. fig. 6, C), standing between those of 

 the first row, and projecting with their thorns (that 

 is, the free parts of the hooks) a little beyond the thorns 

 of the former, are a good deal smaller, but of the same 

 general shape: their total length is 0-114 mil., and 

 the length of the foot 0-063 mil. The hooks of the 

 third row (PL III. fig. 6, D), lying outwards, yet 

 between the two former rows, are far the smallest, 

 their thorns more curved, and their feet much shorter : 



