42 PISCICOLIDiE. 



Pontobdella Isevis, Blainv. Diet. cit. Ivii. 667. Egidy, Bluteg. 106. 

 pi. 4. f. 72 (cop. from Blainv.). Moq.-Tandon, Monogr. 290. W. 

 Thompson in Ann. 8f Mag. Nat. Hist, xviii. 391. Dies. Syst. Helm. 

 i. 439. 



Hab. The coralline region : rare. 



Obs. Tinctures the spirits a beautiful scarlet colour. P. muri- 

 cata, on the contrary, imparts an intense green colour to the fluid. 



5. P. littoralis, body naked, wrinkled with the narrow rings, chest- 

 nut-brown or variegated with rufous ; suckers with an oblique rim. 

 Length 1-2" ; breadth 2-3'". 



Piscicola marina, Johnston in Ann. Sf Mag. Nat. Hist. xvi. 441. pi. 16. 



f. 4-6 ? W. Thompson in Rep. Irish Invert. 272. 

 Ichthiobdella marina. Dies. Syst. Helm. i. 442. 

 Hirudo vittata, Daly ell, Pow. Great, ii. 9. pi. 1. f. 16-21. 



Hab. Parasitical on littoral fish. 



Obs. In spirits the colour becomes a uniform wood-brown. The 

 rings are obscurely marked, but are made evident by the series of 

 minute crenulations oq the margins. The capsules are sessile and 

 nearly hemispherical. The specimen mentioned by Sir J, G. Dalyell, 

 which was 8 or 9 inches long, belonged probably to P. Icevis. 



(«) Berwick Bay, on Aspidophorus cataphractus. Dr. Johnston. 



6. P. campanulata, dark olive speckled with yellow, smooth, exan- 

 nular; suckers pale, the anal very large comparatively. Length 

 13'"; breadth f". 



Hirudo campanulata, Dalyell, Pow. Creat. ii. 12. pi. 1. f. 26, 27. 

 Hab. Coast of Scotland, Dalyell. 



3. PISCICOLA*. 



Piscicola, Blainville in Lam. An. s. Vert. v. 294 (1818); 2de edit. v. 



625; in Diet, des Sc. nat. xlvii. 244. Muell. de Hirud. Berol. 16. 



Moq.'Tandon, Monogr. 293. 

 Ichthyobdella, Blainville in Diet, des Sc. nat. xlvii. 244, & Ivii. 667. 



Dies. Syst. Helm. i. 439. 

 Haemocharis, Savig. Syst. des Annel. 106 & 111 ; Ann. 8f Mag. Nat. 



Hist. ix. 11. Cuv. Regn. Anim. iii. 216. 



Char. Body elongate, subcylindrical, a little narrowed forwards, 

 indistinctly annulated : oral sucker saucer-like, excentrically attached, 

 strictured at its insertion : mouth small, inferior, edentulous : eyes 

 in pairs on the dorsal side of the sucker : anal sucker larger than 

 the oral, excentrically attached, somewhat elliptical, with a simple 



* Grube places this genus in the tribe Clepsinea. 



