NO. 8 wade: new fishes of the eastern pacific 219 



some species inner row of upper jaw, with enlarged teeth. Tongue entire 

 or emarginate. Maxillary moderate, generally not extended behind 

 posterior margin of eye. Barbel-like flap of skin before eye at inner edge 

 of upper lip, more or less developed or absent. Mental frenum present, 

 often scarcely perceptible in preserved specimens, sometimes bilobed. 

 Cutaneous papillae present on head in transverse and longitudinal rows. 



Gobiosoma spiriti-sancti, new species 

 Plate 30 



Holotype.—ARY no. 920. 



Type locality. — Station 634-37, San Gabriel Bay, Espiritu Santo 

 Island, Gulf of California, Mexico, shore collecting on rocky beach, 

 March 6, 1937. 



Paratypes. — AHF no. 921. Station 634-37, 3 specimens, 21-25 mm, 

 same data as holotype. — AHF no. 922. Station 604-36, 1 specimen, 19.1 

 mm, San Gabriel Bay, Espiritu Santo Island, Gulf of California, Mexico, 

 shore collecting, March 20, 1936. 



Measurenients of holotype in mm. — Standard length 22.5, total 

 length 27.9, length of caudal fin 5.4, length of ventral disk 5, longest 

 pectoral ray 6.5, depth 4.2, head 6.4, postorbital part of head 3.4, head 

 depth directly behind eye 3.25, head width at same point 4.3, maxillary 

 2.74, eye 1.8, snout 1.35, predorsal length 8.7. 



Diagnosis. — Dorsal VII — 11 (12 in one paratype) ; anal 10 (11 in 

 one paratype) ; pectorals 17 or 18. Depth 5 to 5.68 in standard length, 

 head 3.38 to 4.1. Head width 5.4 to 5.9 in standard length, head depth 

 6.9 to 7. Snout 4.49 to 4.74 in head, eye 3.5 to 3.9, maxillary 2.3 to 2.5. 

 Mental frenum bilobed, tongue broadly emarginate. Scales absent. 

 Barbule-like flap of skin present on inner edge of upper lip before eye. A 

 small barbule also present midway between lower edge of eye and maxil- 

 lary. 



Description. — Body moderately elongate, slightly compressed an- 

 teriorly, more strongly so posteriorly. Head depressed, broader than 

 deep directly behind eye. Greatest body depth 5 to 5.68 in standard 

 length (17 to 20% of standard length). Dorsal and ventral out- 

 lines bluntly rounded anteriorly. Dorsal outline sloping slightly upward 

 from above eye to dorsal origin, thence curving slightly downward to 

 caudal base. Ventral outline extending almost horizontally backward to 

 anal origin, thence, curving slightly upward to caudal base. 



