E27 FISHES OF SINALOA. 493 
Family GOBIND. 
198. Philypnus lateralis Gill. AsBoma pr Mar. 
Common in the Rio Presidio and occasionally taken in 
the Astillero, especially where the fresh water soaks into 
“i. "The species is common in fresh waters along the 
coast, but has not hitherto been noticed at Mazatlan. 
199. Dormitator maculatus (Bloch). PUuNerEca. 
Rather common in the Rio Presidio and also in the 
brackish waters about the estuary. The young occur in 
considerable abundance in the mud puddles left by the 
winter rains or by the high tides. It reaches in the river 
a considerable size, and is a food fish of some importance, 
said to be the most valuable in the Rio Presidio. It is 
generally common along the coast, as well as everywhere 
along the Atlantic side. 
200. Eleotris equidens Jordan & Gilbert. Guavrina. 
Rather scarce in the Rio Presidio, where only one 
young specimen was obtained by us. A few others were 
found in brackish waters or muddy places about the es- 
tuary. 
Blackish everywhere, sides with faint whitish streaks, 
along rows of scales; a broad blackish lateral band occu- 
pying whole of side; back and belly paler; traces of faint 
dark cross-bands; caudal black, with a pale margin and 
some dark cross-shades; pectorals, dorsals and ventrals 
more or less barred with black; a whitish bar at base of 
caudal-with a darker one before it. Scales 68; preopercu- 
lar spine well developed. 
201. Cotylopus gymnogaster (Ogilvie—Grant). 
Recorded from streams about Mazatlan; not seen by us. 
