330 



ADDENDA, VOL. IV 



VOL. IV. 



Fam. GOBIIM 7 . 



2. GOBIUS, Art. 

 ' 3 a. GOBIUS THOMASI, sp. n. 

 Body feebly compressed. Depth of body 4| times in total length, 

 length of head 4 times. Head H times as long as broad, scaly above 

 from between the eyes, naked on the sides; snout rounded, shorter than 

 eye, which is 3-| to 3f times in length of head ; interorbital space very 

 narrow; jaws equal in front; mouth extending to below anterior border 

 of eye ; teeth rather small, in a narrow band. Dorsals VI 9, well 

 separated from each other ; third simple ray somewhat produced, a 



Fig. 195. 



Gobius thomasi. 

 Type, x If 



little shorter than head. Anal I 9, opposite second dorsal. Pectoral 

 a little shorter than head. Ventral not reaching vent, with a rather 

 narrow basal membrane. Caudal rounded-subacuminate, as long as 

 head. Caudal peduncle lj times as long as deep. Scales feebly ciliated, 

 26-27 in longitudinal series, 8 in transverse series. Pale olive-brown, 

 with small dark brown spots and a lateral series of large blackish 

 spots ; a large black spot above base of pectoral ; blackish wavy lines 

 on the cheek and gill-cover ; a black crescentic band from eye to eye 

 across the gular region. 



Total length 50 millim. 



Sierra Leone. 

 1-2. Types. N. Sherbo district. N. W. Thomas, Esq. (P.). 



Agrees with G. dewaalii in the large scales; differs in the position of 

 the mouth, the absence of canine teeth, the naked gill-cover, and ihe 

 larger eye. 



