400 



AN.NKLIDES. 



M. jMoqiiiii Tandoii lias described a subgenus oy the name of Anlasiorna, the jnoatli of \vnicn nas 

 merely longitudinal folds, several in nuniljer. 



In the :buitc of NppfK-lt.s, should be plaeed the BranchwbdeWa of JM. Odier, remarkable for liaviug 

 t\vo ja^s and no eyes. 

 One sjiecies only is known, which lives upon the ^iils of the Crab. 



All these subdivisions have the anterior sucker a little separated from the body: the two next are 

 distinguished liy a further separation, composing almost a segment, having a trun!iverse aperture. 



ILemocmauis, Sav., — 

 In addition to this conformation, have eight eyes, a slender body, and rings not very distinct. Their 

 jaws do not project, and are scarcely visible: they do not swim, but advance in the manner of the 

 caterpillars termed geometrical, and attach themselves particularly to Iishes. They are the Piscicola 

 of Clainville, and the Icl}iifjfji}cUa of Lamarck. 



Line species is common uiiun the Carp, (//. ) isciym, Lint].)- 



Albiones, Sav. {PontohihUa, Leach and IJlainville), — 

 ])iifer from the preceding by having tlio body bristled with tubercles, and eyes only six in nuniher. 

 Th';y h\e in the sea. 



There is a parasite on the Torpedo, named Brancheliion, very similar to a Leech, Ijnt which appears 

 to have a little mouth at the hind border of its anterior disk, uhich last is borne on a slemler neck, and 

 at the base of it is a small hole for the generative organs. The lateral edges of its folds, which are 

 compressed and salient, have been regarded as branching, but I cannot perceive vessels ramifying upon 

 them ; the epidermis is aui])le, and envelopes the creature like a very loose sac. 



Clepsikks, Sav. ( Olossoporis, Johnson), — 

 Ranks commonly also among the Leeches. The I)ody is widened, with a disk only behind, and the 

 mouth is fwrmcil into a trunk, and not suctorial ; but it is not impossible that some of these belong to 

 the famdy of Flanarid'. PhiUines, Oken, and Mal-acohdellls, Blainv., have also a widened body, and 

 want the anterior sucker. Tlieir habits are parasitic. 



The Gordians {Gordius, Linn.)- — ■ 

 Have the body in form of a hlament ; slight transverse folds, which mark the articulations onlv ; and 

 no feet, branchia:, or tentacles have yet lieen discerned; nevertheless, they are internally di^tingnislied 

 bv a knotted nrrvous chord. They should perhaps be placed, however, with the intestinal w"orn)S, 

 such as the Nemerfes. 



The various species inhabit freshwater, mud, and inundated grounds, which tlioy peii"orate in all directions, 

 &c. [We liave not unfrei|uciitly met with them upon i^arden-cabbages, and their name is deri\'ed from the com- 

 plex knots into which they seemingly entangle their ex- 

 tremely elon,£^ated bodies.] The commonest (C aquaiinis^ 

 Linn.), is several inches long, and scarcely tliicker than 

 a hair. See the memoir of Dr. George Johnston on this spe- 

 cies ill the Mai]aziiie of Natural lihiory, vol. ix. p. 359.] 

 [This animal, which is found in slouly-running' and stagnant 

 waters in the summer, is commonly mistaken for the species 

 Fip 2(1'} — Gurdius a.^iaiicug. ^*^ Filaria, the proper habitat of which is the intestines of 



Beetles and other insects. The head of Gordius is obtusely 

 conical, with a simple circular terminal pore for a mouth, from which a sort of membrane can be forced by 

 pressure. The tail is bitiil ; the processes short, equal, and obtuse ; tlie latter lias often been mistaken for the 

 mouth. Tims D . Ii.rten describes the moutli as "small, horizontal, with equal obtuse jaws." Dr. Johnston 

 states, that having cut off portions of the anterior extremity and tail, the detached parts soon lost every sign of 

 life ; it has, however, been asserted, that each part would grow into a perfect animal.] 



