142 ANNELIDES. APODES. 



yellow ; ocular points eight, in a lunated series. Inhabits Europe, 

 on aquatic plants. Lam. v. 296. 



E. bioculata, Lam. (H. stagnalis, Lin.) Body elongated, cine- 

 reous ; with two eyes. Inhabits Europe in ponds and ditches 

 Lam. v. 296. 



Gen. 5. GLOSSOPORA, Johnson. Hirudo, Gmel. 

 Body subovate, depressed ; head acuminated ; tongue tubular ; 

 mouth and tail alternately fixed when in motion. 



G. tulerculata, Johnson. (H. complanata, Gmel.) Body dilated, 

 cinereous above, with a double tuberculated line ; grayish below, 

 with numerous black points. Inhabits Europe, in ponds and 

 ditches. Treatise on the Medicinal Leach. 



Gen. 6. PHYLLINE, Lam. Hirudo, Mull. 

 Body flattened, short, almost oval, gelatinous, terminated pos- 

 teriorly by a contractile disc, large and armed with hooks. 



This genus comprehends parasitical animals which fix themselves by their poste- 

 rior disc on other marine animals. 



P. hippoglossiy Lam. Body dilated, whitish, with an ocellated white 

 spot on the middle of the body. Found on the body of the Pleu- 

 ronectes hippoglossus. Lam. v. 295. 



Gen. 7. PISCICOLA, Blainv. Hirudo, Mull. 

 Body cylindrical, elongated, attenuated anteriorly, with the ex- 

 tremities dilated ; mouth deprived of teeth ; four eyes. 



P. piscium, Lam. (H. geometra, Lin.) Inhabits Europe in fresh 

 waters. Lam. v. 294. 



Gen. 8. PONTOBDELLA, Leach. Hirudo, Lin. 

 Body elongated, cylindrical, furnished with warts or spinous tu- 

 bercles, with distinct rings, and the extremities dilated by a 

 prehensile disc ; mouth deprived of teeth or jaws ; no eyes ; 

 anus superior, near the posterior disc. 



P. muricata. Lam. Body round, warty, with the warts disposed 

 in annular segments. Inhabits European seas. Lam. v. 293. 



P. spimdosa, Leach. Body spinulose, the spines remote. Inha- 

 bits British seas, adhering to rays. Sup. Encyc. Brit. i. pi. 26. 

 This species is called in Scotland the Skate-sucker. When bruised it emits a dark 



liquor, which stains of a beautiful purple colour. 



Gen. 9. TROCHETIA, Lam. 



Body oblong, cylindrical anteriorly, broader and slightly de- 

 pressed posteriorly, and terminated by a protractile disc ; a 

 large circular ring about a third from the anterior end of the 

 body ; mouth bilabiate, with the upper lip large and obtuse ; 

 no teeth, jaws, or eyes ; anus superior, near the posterior disc. 



T. subviridis, Lam. Found in France in moist places. 2^ inches 

 long Lam. v. 292. 



