38 



III. BDELLIDEA. 



I. HIRUDINACEA. 

 Fam. I. BRANCHELLIDiE. 



Sangsues branchelliennes, Savigny, Syst. Annelid. 106. 



Obs. The foliaceous lobes which margin and thicken the sides 

 were described by Savigny as branchial organs, but Blainville assures 

 us that they are not so. De Quatrefages has proved that they are 

 branchial in a certain sense, — aerating the lymph and chyle previous 

 to their admixture with the blood. 



1. BRANCHELLION, Savigny, 1817. 



Branchellion, Savigny, Syst. Annel. 109. Lam. Anim. s. Vert. v. 529. 

 2de edit. Cuv. Regn. Anim. iii. 216. Moq.-Tandon, Monogr. 281. 

 Brancliiobdella, Blainville in Diet, des Sc. nat. Ivii. 556. 



Char. Body elongate, flattened, coriaceous, annulated and mar- 

 gined with a series of foliaceous lobes along each side, commencing 

 on the fourteenth segment : oral sucker with a ventral aspect, small, 

 deeply cupped, with a broad entire rim, constricted at its insertion, 

 and supported on a long cylindrical smooth neck issuing abruptly 

 fi'om the body : mouth with three obsolete jaws : anal sucker larger, 

 cupped, terminal, with a ventral aspect, without a rim : vent very 

 small, romid : sexual male orifice at the base of the neck and anterior 

 to the female, which is between the fifteenth and sixteenth rings. 



1 . Br. torpedinis, foliaceous appendages in five semicircular lobes. 



Branchelliou torpedinis, Savig. Syst. Annel. 109. Risso, I'Europ. 

 M^rid. iv. 432. Moq.-Tandon, Monogr. 282. pi. 1. f. 1-10. M.- 

 Edwards in ham. An. s. Vert. 2nde edit. v. 530. Cuv. Regn. Anim. 

 illustr. 51.pl. 23. f. 3. 



La Sangsue de Rodolphi, Blainv. Monogr. Hirud. 39. 



Branchiobdella torpedinis, Blainville in Diet, des Sc. nat. Ivii. 556; 

 Atlas, Hirud. f. 1. 



Branchiobdella Rudolphii, Dlesing, Syst. Helm. i. 443. 



Le Branchellion, Quatrefages, Souv. d'un Naturaliste, ii. 326 & 527. 



Hab. On the Electric-Rays (Torpedo). 



Obs. The species is described as being of a dark-brown dotted 

 with yellowish-white, but, in spirits, it becomes of a iiniform sienna- 

 yellow colour. The body is flattened ; the dorsal surface a Httle 



