WORMS. INFUSORIA. 84. Cercaria. S25 



Adams Micr. p. 525. tab. 27./. 13. 14. 



In water kept some time ; smooth,, pellucid, longer than it \% 

 broad, tilled with yellow molecules, obtuse in front. 



820. Tr. longicauda. Cylindrical, truncate and surroun- 

 ded with hairs in front, tail long, with 2 points and 

 2 bristles. 



Adams Micro/cop*, p. 525. tab, 27./. to. 



B. furnished with cirri. 



821. Tr. Icarus. Round, tumid, cirrate behind, pointed 

 before. 



Adams Micro/cope p, 534. tab. 27./. 27. 



In fresh water ; pear-shaped, full of black molecules, the tip 

 pellucid and radiate with 4 long curved foft tendrils. 



822. Tr. Ludio. Gibbous, cirrate on one edge and hairy 

 on the other ; tail forked stretched forward. 



Donovan Ins. t. eo./. 2. Adamj Micro/cope t. 27./. 26. 



In stagnant water; fmooth, pellucid, ciavate, lull of fmall points: 

 cirri placed at top and in the middle 



C. Homed. 



823. Tr. Histrio. Oblong, with nmcronate points on the 

 fore-part, and longitudinal fin-like bristles be- 

 hind. 



Adams Micro/cope p. 531. tab. 27./. 20. 



Body membranous, pellucid, with 4. or 5 black points on the fere- 

 part, the middle with clofe black f pecks and a few large white 

 fpots ; near the lower-part a few longitudinal bristles, not reaching 

 beyond the body. 



824. Tr. Cypris. Pear-shaped, sinuate towards the hind- 

 part, hairy on the fore-part* 



Adams Micro/cope p. 531. tab. 27./. 21. 



In ditch water ; comprefsed, rounded behind. 



825. Tr. Patella. Covered with an univalve shell, emar- 

 ginate and horned in front, with pendulous flexile 

 bristles behind. 



Adams Misrofcope p. 531. tab. 27./.. 22. 23, 



In marsh water; comprefsed, rounded behind. 



826. Tr. Pullaster. Oval, sinuate on the fore-part with 

 a crest in front, hairy at the base. 



Adams Micro/cope p. 532. tab. 27./.. 24. 25. 



In ditches ; pellucid with shining molecules, tru-ncate and fur- 

 rounded with hair in front, sinuous on the fore-part. 



827. Tr. Mytihis. Oblong, broader at each extremity \ 

 transparent, ciliateand horned. 



Adams Micr of cope p. 532. tab. 27./. 29. 



In marsh water, pellucid, white and rounded at both ends, dark 

 in the middle wkh black inteftines mixed with a few white mole* 

 cules, ciliate and armed with 2 horns in front, ciliate behind and 

 furnished with 2 briftles reaching beyond the margin* 



84. CERCARIA. 



828. C. Gyrinus. Round, with a sharp-pointed taiU 



Baker Microfc. expL tab. \o.fi x t 



In animal infusions j white, gelatinous, nearly globular on 

 the fore-part. 



