II. ANNULATA DISCOPHORA, Gnie 



(Hirudinea, Vogt; BedeUidea, Jolinstuu; Dicsiferae, Malm.) 



Fam. HiRUDiNEA, Sav. (Hirudiuacea Gru1)e; Bdellinea, Mo- 

 quin-Tandon, 



Corpus utrinque attenioatum; corporis segmenta distinete anmdata 

 (annulis jv I. v. eomposita); exfremifas a/nterio' corpori cotimtna, eavi- 

 tate prehensili tenninata; aeetabulum posticiim oblique affixum, cliscre- 

 f/um, amis eidem superior; oesophagus jicuMulum protractilis, plieis tri- 

 bus, interdum dentatis, longitudinalibus ; sanguine rabro. 



Hii'udo, Lin. sensu strictiori (Sanguisuga, Sav.y. Acetabulum ante- 

 rius annulatum, corpori contimtum, lobis anteriore et pc'=<teriore praedi- 

 tum; segment'is tribus, annidisqite. dtiobus compositum; pliea° oesophageae 

 maxilla semiovali; dentibus acutis, margi/ialibus, numerosis (60 — 70), 

 serie dupliei dispositis instriocta. Oculi decern. Aperturoe geniinles in- 

 ter XXIV — XXV et inter XXIX — XXX segmentum; paria saccorum 

 ventraUumnumerosa-imagna; intestinum tenue ; anus minutus rotundatus. 



H. medicinalis, Lin. Corpus supra griseo-olivaGeum, fasciis lon- 

 gitudinalibus vj rufo-flavis, aut intus plus minusve atris, aut totis ater- 

 rimis pictmn; subtus jjallide flavo-olivaceitm, ut pliorimum fasciis mar- 

 ginalibus maculisqve nigris. Long. 75 in m., lat. 10 m. m. 



Syn. Hirudo depressa fusca, niargine lateral! flavo, Lin. F. 



Su. I. M 1272. 

 Hirudo medicinalis, Bergman 1757 pag. 308; Liii. Syst. Nat. 



X p. 649; Lin. F. Su. n. M 2079; 0. F. Miiller, i. n 37; Lin. 



Syst. N. XTTT. 3095; Johnson Treatise 29; Moquiu-Tandon 327; 



Grube 109; Diesing. i. 465; Malm 169; Kessler 110; Johnston 



48 S 309; 

 Hirudo venaesector, Braun 24. 



Hab. in aquis dulcibus passim. — Rimito; Tenala, as no- 

 ticed by mr Lihr, apothecary at Pojo; to the north of Onega, 

 Giinther. according to Kessler. 



Varieties yet unknown. 



Ohs\ I am told by apothecaries that the most part of 

 leeches that are sold in Finland should be imported from Rus- 

 sia; though one may also in our country find numberless lakes 

 and ponds suitable as dwell ingplaces for those animals. 



Aulastoma, M.-Tand, Corpus depresso-cgliii.lricum, anfrors/nn 

 attemiatum; labium posterius fere nullum; os amplum, maxillae parrae, 



