120 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.2 



18; pectoral rays 23-26. Tongue bilobate. Supraorbital ridge expanded 

 posteriorly. 



Holotype. — In Bingham Oceanog. Coll. Puerto Refugio, Angel de 

 la Guarda Island, Gulf of California; 51 mm. 



Paratypes. — In Bingham Oceanog. Coll. 47 specimens 35-53 mm 

 taken together with the type. San Francisquito Bay, one specimen 33 mm. 



Distinctive characters and relationship. — This species is nearest to 

 Lepidogobius gilberti Eigenmann and Eigenmann and differs in having 

 two instead of one papillae on the shoulder girdle, with very few excep- 

 tions, and in the male having the first dorsal spine prolonged. It lacks 

 the dark, obliquely elongate spot or blotch on the opercle which is char- 

 acteristic of gilberti. The color of this species, in general, is lighter than 

 in any known species of Lepidogobius. 



Microgobius erectus, new species 



Diagnosis. — Mouth nearly vertical, end of maxillary assuming a 

 ventral position, a vertical tangent through posterior margin of max- 

 illary passing approximately through anterior margin of eye. Teeth in 

 two rows, notably small, no caninoids. Scales rather large, in 38 rows 

 to base of caudal, cycloid ; a small patch of weakly ctenoid scales on 

 middle of body, under first dorsal; scales extending forward to a verti- 

 cal through origin of first dorsal; none on antedorsal distance, side of 

 head, base of pectoral or throat. A membranous ridge on midback, in 

 front of first dorsal, rather well developed. D. 7-15; A. 15; the spines 

 not especially prolonged. Pectoral rays 22-23, its tip reaching a vertical 

 variably situated between bases of first to third dorsal rays. Ventral 

 approximately reaching anal opening. Caudal comparatively rather long, 

 about two-fifths the standard length. Body and head conspicuously 

 compressed. 



Holotype. — In Bingham Oceanog. Coll. Northern part of Gulf of 

 California; 26 fathoms; female 82 mm. 



Paratypes. — In Bingham Oceanog. Coll. obtained with the type; 

 2 females 56-58 mm, 4 males 56-66 mm, 1 small specimen 40 mm, sex 

 not determinable by external examination. All specimens not in very 

 good condition ; the largest, a female, in somewhat better condition than 

 others selected as the holotype, although the belly appears to be some- 

 what abnormally distended. 



Distinctive characters and relationship. — This species differs mark- 

 edly from all known species of Microgobius by its small teeth and 



