ABRANCHIATiE. 469 



Albiona, Sav.(l) 



Differs from the preceding subgenera in the body, which is stud- 

 ded with tubercles, and in having six eyes. The Albionae inhabit 

 the Ocean. 



Mb. muricata; Hirudo muricata, L. A very abundant species 

 in the seas of Europe; it is covered with small tubercles(2). 



There is a parasitic animal that lives on the Torpedo called Bran- 

 chellion(3) Avhich closely resembles a Leech in its two cups, de- 

 pressed body and transverse plicse. Its anterior cup, which appears 

 to have a very small mouth in the posterior margin, is placed on a 

 narrowed portion resembling a neck, at the root of which is a small 

 hole for the organs of generation; there appears to be another behind. 

 The lateral edges of its plicse, which are compressed and salient, 

 have been considered as branchiae, but I can find no vessels there; 

 its epidermis is ample, and the envelope like a very loose sac(4). 

 We also commonly place among the Leeches the 



Clespine, Sav. — Glossopora, Johns. (5) 



The Clespines have a widened body, a posterior cup only, and a 

 probosciform mouth without a sucker; some of them, however, may 

 be found to belong to the family of the Planari3e(6). I consider 

 them more closely allied to thePnYLLiNE, Oken(7), and to the Mala- 

 coBDELLiE, Blainv.(8), which also have broad bodies, and are de- 

 prived of a proboscis and anterior sucker. They are parasitic ani- 

 mals. 



(1) The PoNTOBDELLiE, Leach and Blainv. 



(2) Add, Pontobdella areolata; — Pont, verrucata; — Pont, spinulosa, Leach, Zool. 

 Miscel., Ixiii, Ixiv, Ixv; — Hirudo vittata, Chamiss., and Eisenhardt, Nov. Act. Nat. 

 Cur., t. X, pi. xxiv, f. 4. 



(3) The PoLrDORA, Oken; Branchiobdellion, Rudolphi; and the Braxchiob- 

 DELiA, Blainv. 



(4J It is the Branchellion torpedinis, Sav., but it must not be associated with the 

 species found on the Tortoise {Hir. branchiata, Menzies, Lin. Trans., I, xviii, 3), 

 which really appears to have branchiae that resemble a branch of feathers, and 

 which it is requisite again to examine. 



(5) The GLossoBDELLiE, Blainv. 



(6) Hirudo complanata, h., or sexoculaf a, Bergm., Stock. Mem., 1757, pi. vi, f. 

 12 — 14; — Hir. trioculaia, lb., f. 9 — 11; — Hir. hyalina, L., Gm., Trembley, Polyp., 

 pi. vii, f. 7; — Clespine paludosa, Moq. Tand., pi. iv, f. 3, &c. 



(7) EpiBDELLiE, Blainv.; — Hir. hippoglossi. Mull., Zool. Dan.,liv. 1 — 4. 



(8) Hir, grossa, Mull., Zool. Dan.,xxi. 



