386 Messrs. Playfair and Letourneux on the 



IV. Ichthyology. 



1. Gohius rhodopterus. 



Gobius reticulatus, Cuv. & Val. xii. p. 50 ; M'Coy in Ann. & Mag. Nat. 



Hist. 1841, vol. vi. p. 403 (not Eiclm.). 

 rhodoptertcs, Giinth. Fish. iii. p. 16. 



D. 6 I 9-10 ; A. 9-10 ; L. lat. ca. 38. 



Snout ratlier rounded, with tlie lower jaw longer than the 

 upper ; head longer and broader than high ; ejes close together 

 on the toj) of the head ; sides of head naked ; teeth of the 

 outer series enlarged ; no canines. Height of body from 6 to 

 7 times and length of head 4^ times in the total length. Scales 

 in about nine longitudinal series ; those of the anterior part 

 of the body are imbedded in the skin, those on the tail are 

 much the largest ; and the nape is naked. Dorsal fins rather 

 close together, and lower than the body ; none of the rays of 

 the pectoral silk-like ; ventrals extend nearly as far as the 

 vent ; caudal rounded. Coloration : brownish olive, irregu- 

 larly spotted and reticulated with darker, and with an inter- 

 rupted brown longitudinal band; first dorsal with a 'large 

 black spot posteriorly ; second dorsal and caudal with minute 

 brown spots arranged in lines parallel to their bases ; anal 

 immaculate. 



Length 1*8 inch. 



Hah. The Seybouse, and Oued-el-Cherif, near Guelma. 

 Mediterranean^ Dublin Bay. 



2. Gohius paganellus^ L. 



Hah. The Seybouse near Guelma and the rivers of Eastern 

 Kabylia. Mediterranean and coasts of Great Britain. 



3. Blennius vulgaris^ Poll. 



Hob. Oued-el-Harach and rivers of Eastern Kabylia. Me- 

 diterranean ^ lakes of Italy. 



4. Cristiceps argentatus. 



Blennius argentatus, Risso, Iclitla. Nice, p. 140. 



Audifredi, idem, p. 139. 



Clinus arffentatus, Risso, Eur. Merid. iii. p. 238. • 



testudinarius, idem, p. 239. 



virescens, idem, p. 239. 



Audifredi, idem, p. 240. 



mutahilis, Cocco, Giorn. Sc. Lett, ed Arti Sicil., April 1833, xlii. p. 9, 



t. 42. f. 2. 



argentatus, Cuv. & Val. xi. p. 3o4; Guich. Expl. Sc. Alg. Poiss. p. 74. 



Cristiceps argentatus, Giintli. Fish. iii. p. 272. 



Perhaps the most interesting discovery that has yet been 



