FISHES OF THE PHOENIX .\ND SAMOAN ISLANDS 227 



23a. Midline of nape iu front of dorsal fin naked. 

 24a. Directly behind each eye a conspicuous oval 

 brown spot occupying nearly half of distance 

 from eyes to origin of dorsal fin; basal mem- 

 brane of pelvic fins rudimentary ; inner rays 

 of pelvics joined by membrane for about two- 

 thirds way out toward their tips ; cheeks, 

 opercle, breast, and region in front of dorsals 

 naked ; a more or less obvious pigment area 

 or band across cheek ; a small brown spot at 

 base of lower pectoral ray ; a wide bar under 

 spiny dorsal and, another under soft dorsal 

 and two behind it; base of caudal fin rays with 

 a brown blotch ; no pigment spots along mid- 

 ventral line behind anal origin ; depth 5.3 ; 

 snout 1.3 in eye ; snout 4.66 in head ; eye 1.2 in 

 maxillaries; eye 3.5 in head; dorsal rays 

 VI-I, 8 ; anal I, 7 ; pectoral 14 or 15 ; scales 

 about 30; pelvics I, 5. 



Pandaka pruinosa (Jordan and Scale) 

 24&. No large black spots on dorsal surface of head 

 behind eyes ; basal membranes of pelvics not 

 rudimentary. 

 25a. Scale rows fewer than 30; usually 23 to 29. 

 26a. Breast scaly. 

 27a. No alternating vertical black and white 

 bars anywhere; sides of head above oper- 

 culum or each side of nape scaly but mid- 

 line of nape naked ; 23 to 26 scale rows, 

 six or seven in a transverse series; snout 

 about as long as maxillaries ; lower jaw 

 longer than upper jaw; dorsal rays VI-I, 

 9 ; anal I, 8 ; pectoral 16 to 18 ; a V-shaped 

 color marking on top of snout ; one or two 

 more or less distant spots on midaxis 

 posteriorly on caudal peduncle. 



Fusigobius neophytus (Gtinther) 

 27b. Alternating vertical pale and dark bars, 

 two below eye, and two more across oper- 

 culum, one across pectoral base, three or 

 four under spinous dorsal, those poste- 

 riorly faint or absent ; no scales on sides 

 of nape ; about 27 scale rows, 10 or 11 

 in a transverse series ; snout about 1.7 

 in maxillaries; lower jaw longer; dorsal 

 rays VI-I, 9 ; anal I, 7 ; i)ectoral 18. 

 Zonogobius semidoliatus (Valenciennes) 

 26&. Breast naked ; no alternating vertical pale 

 and dark bars; 27 or 2S scale rows, 8 or 9 

 in a transverse series, no scales on nai>e 

 or sides of nape ; snout about 1.5 times iu 

 maxillaries ; dorsal rays VI-I, 9 ; anal I, 

 8; pectoral 18 or 10; a black bar across 

 base of caudal fin ; upper rays of caudal fin 



