GLOSSIPHONIA. 51 



margins are crenulate. When contracted the body is almost romid, 

 the head forming a short apiculus. Gregarious. 

 (a) Holy-Island Lough, Dr. Johnston. 



2. G. verrucata, subcartilaginous, ovato-elliptical, scarcely narrowed 

 in front, the back with six rows of prominent granules ; acephalous ; 

 eyes 6, in three parallel pairs ; ventricular appendages seven pairs, 

 the posterior terminating between the first and second pairs. 

 Length 14'". 



Clepsine verrucata, Mueller, Hirud. Berol. 23. 

 Hab. Ponds. 



Obs. The original colour of the specimens is discharged by the 

 spirits, and they have become ochre-yellow with pale brown lines, on 

 which the whitish tubercles are placed. These are in six nearly 

 equidistant rows, the granules of the middle rows being rather less 

 than those of the dorsal and marginal. The eyes T cannot distin- 

 guish : they have sunk from the contraction of the rings produced 

 by the spirits in which they have been killed. 



(a) Cobham, Surrey, Mus. Leach. 



3. G. granifera, subcartilaginous, dilated posteriorly, granulous on 

 both surfaces, the sides thickened and marginate on the ventral 

 aspect; eyes 6, the anterior pair approximate. Length 10'". 



Hab. Ponds. 



Obs. Differs from every described species in having a thickened 

 raised margin on each side which extends along about two-thirds of 

 the body. The granules also are not disposed in longitudinal series, 

 but cover the entire body, there being a series across each segment. 

 The granules are rather less than those of G. verrucata. The eyes 

 are distinct. 



(a) ? Mr. Joshua Alder, who does not recollect from what 



locality the specimen was procured. It is probably a native of the 

 Northumberland lakes. 



4. G. sexoculata, crisp and subcartilaginous, pear-shaped, greyish- 

 green, lineated, and marked on each side of the mesial line with a 

 dark fascia studded with equidistant whitish granules ; acephalous ; 

 eyes 6, in two subparallel rows ; six pairs of ventricular appen- 

 dages, the posterior pair terminating between the second and third 

 pairs. Length 8'" ; breadth 2-3'". 



A small sort of Leech, Baker, Employm. Micros. 415. 



Hirudo complanata, Linn. Syst.x.650, xii. 1079 ; Faun. Suec. 2nd edit. 



506. Miill. Verm. i. ii. 47 ; Zool. Dan. Prod. 220. Turt. Gmel. 



iv. 69. Turt. Brit. Faun. 129. Ure's Rutherglen, 233. Stew. 



Elem. ii. 357- Penn. Brit. Zool. iv. 72 (1812). Dalyell, Pow. 



Creat. ii. 30. pi. 4. f 1-16. 



E 2 



