1. GOBIUS. 27 



has the basal membrane very broad, and terminates at some distance 

 from the vent ; no warty stripes on the head ; cheeks naked. Dark 

 brownish-olive, marbled with darker, and wdth lighter dots along 

 the series of scales ; ventrals blackish. 



Caribbean Sea ; Gulf of Mexico ; Mediterranean. 



a. Adult : not good state. Jamaica. 

 6. Adult : skin. From Dr. Parnell's Collection. 

 c. Half-grown. Mexico. From M. Salle's Collection. 

 d-e, f-g. Panama. 



Ji-i. Fine specimens. Sicily. Collected by W. Swainson, Esq. 

 Jc, I. Adult. From the Collection of the Zoological Society, 

 m. Half-grown : stuffed. 



n. Half-gi'own. Caribbean Sea. From the Collection of the Zoolo- 

 gical Society. 



Professor Peters has kindly communicated to me a description of 

 the imique specimen in the Berlin Museum, on which Midler and 

 Troschel have founded their Gohius bishopi (in Schomburgk's Barbad. 

 p. 672). It so closely agrees with our specimens of G. sojporator, that 

 I have no doubt that both are identical. 



40. Gobius nigri. 



D. 6 1 11. A. 9. L. lat. 42. 



Fifteen longitudinal series of scales between the second dorsal fin 

 and the anal. The height of the body is contained fom* times and 

 two-thirds in the total length, the length of the head four times ; 

 the head is broader than liigh, its width being five-sixths of its length ; 

 the snout broad and depressed, as long as the diameter of the eye ; 

 the cleft of the mouth horizontal, with the jaws equal anteriorly ; 

 the maxillary extends somewhat beyond the anterior margin of the 

 eye. The eyes are close together, directed upwards, their diameter 

 being one-foui-th of the length of the head. The head is densely 

 covered with small scales to the vertical from the centre of the eye. 

 Canine teeth none ; teeth of the outer series somewhat enlarged. 

 Dorsal fins separated from each other, of nearly equal height, lower 

 than the body ; caudal obtiisely rounded ; pectoral with the basal 

 portion scaly, and with the upper rays silk-Uke ; ventral subcii'cular, 

 not extending on to the vent, Avith the basal membrane well deve- 

 loped and pro^•ided with two processes. Scales ctenoid. Chestnut- 

 brown : dorsal, caudal, and pectoral brown-spotted ; anal and ventral 

 bla«kish. 



a. Fine specimen. Niger Expedition. From Mr. Eraser's Collection. 



lines. 



Total length 30 



Height of the body 6| 



Length of the head 8 



Greatest width of the head 6| 



Diameter of the eye 2 



