

WORMS. 125 



like filaments, placed parallel with each other, and 

 frequently changing their position. 



93, Enchelis. Body invisible to the naked eye, quite 

 simple, cylindrical. 



94 Volvox. Body invisible to the naked eye, quite sim- 

 ple, transparent, spherical. 



95. Monas. Body invisible to the naked eye, most sim- 

 p le, transparent, resembling a point. 



ORDER L INTESTINA. INTESTINE. 



1. ASCARIS.. AscarMes., 

 ll^Avermicularis. Head subulate.: skin at the sides of 

 the body very finely crenulate or wrinkled. 



Bar but's Worms, t. i.f. 6* . Mem. Load. Med.. Soc. v*p, 230. t. 2. 



In the human intestines. Body about half , an. inch long, a little 

 dilated in the middle and wrinkled at the sides, pellucid and an- 

 gular : head nodofe, divided into three vefcicles, in the middle of 

 each of which there is an aperture or mouth : tail gradually taper- 

 ing to a point : vent below the middle. Female with a fmall per- 

 foration a little below- the head, through which the young are 

 protruded. 



2. A. lumbrlcoides. Head slightly incurved, with a trans- 

 verse contraction beneath it : mouth triangular. , 



Barbufs Worms, t. i.f. 7. Mem. Lond. Med. Sod v. t. 1. 



In the human intesti-nes. Body 12.-15 inches long* tranfparent, - 

 light yellow with a faint line down the side, differing from the earth- 

 worm in wanting the fleshy ring below the head, and in having 3 

 vesicles : head 3-lobed, with a triangular aperture between them : 

 trunk a little wrinkled, with a circular depression about the mid- 

 dle, in which is a small punctiform- aperture : tail fubulate : vent 

 large, below the. middle of the body. 



% A. Cards. Head flattened, winged each side with a 

 membrane: spermatic vessels curled : tail pointed. . 



In the intestines of the Dog. Redi. Opusc. 3. t. 17./. 3. 



A. Fells. Head with a greyish-white oblong vesicle 

 each side, which is obtuse and pellucid on. the hind- 

 part. 



In the Cat. Redi anim. viu. in. an. viv. t. 13 /. 8. 1 



4. A. Call, Head without the oblong vesicles each side. 



In the intestines of the Gat. Goeze Eingeuj+p. 80. 



5. A. Equi. Body whitish, cylindrical, large, taper. 



In the Horfe. Goeze Eingew. p.62. t. 1./. t-3. 



Body often a foot and a half long, and as thick as. a man's little, 

 finger, fometimes markedwith large brown patches... 



6. A. Carbonis In the crop of the Pelecanils Carbo. 



Tranfact. Linn. Society v. p. 24. 



Body yellowish-brown, coiled up into a ball or mafsv 



7. A. Pelecanus. In the crop of the Pelecanus cristatus. 



Refembles the .last; Trans. Linn. Soc. v. p. 24,. 



S. A. marina. Body filiform, whitish, smooth, twisted 

 spirally and lying flat: intestine tubular. 



In marine fish, Br. Zool. iv. tab, 2c./. 3. Gordiusv 



