330 ADDENDA, A'OL. lY. 



VOL. IV. 



Fam. GOBIID.I-\ 



2. GOBIUS, Art. 

 3 a. GOBIUS THOMASI, ,«p. n. 

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

 length of head 4 times, llend li tirr.es as long as broad, scaly above 

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

 eye, which is 3^ to 3| 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 



Fis;. 10.3. 



Guhiiis tliomaxi. 

 Type. X 1\. 



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 1^ times as long as deep. Scales feebly ciliated, 

 2G-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 cre^centic band from eye to eye 

 across the gular region. 



Total length GO millim. 



Sierra Leone. 

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



Agrees with 0. dewaalii in the large scales ; differs in the position of 

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

 larger eye. 



