458 CALIFORNIA ACADEMY OF SCIENCES. 86 
131. Hemulon scudderi Gill. Roncapor PRIETO. 
This species reaches a length of about fifteen inches, 
and is very common at Mazatlan, more so than any other 
member of the group. Large specimens were taken by 
dynamite in the deep water about the Venados, and the 
young are rather common in the estuary. The species 
seems to have indifferently eleven or twelve dorsal spines, 
and there is a greater variation than usual in the form of 
the body and in the shade of coloration. There seems to 
be no doubt, however, that all the forms usually referred 
to this species belong to a single one. The species is 
found from Cape San Lucas to Panama. 
Back bright yellow-olive to opposite front of soft dorsal, 
the posterior half, more or less abruptly, steel blue black. 
The vertical fins all blackish; in some the whole back is 
greenish, in others only half; lower parts all gray; most 
of the large ones show no traces of spots on scales, some 
show a few spots; fins silvery, with golden above and be- 
low; mouth red within; black under preopercle. 
132. Hemulon steindachneri (Jordan & Gilbert). Ron- 
CADOR RAIADO. 
This small species, not reaching a length of more than 
eight inches, and too small to be regarded as a food fish, 
is very abundant in the harbor at Mazatlan, especially 
about the whart and in the quiet waters inthe estuary. It 
is generally distributed along the coast from Guaymas to 
Panama. It seems to be indistinguishable from a species 
found along the Brazilian coast and north to St. Lucia. 
For this species we have formerly taken the name of 
Heaemutlon schranki Agassiz. This identification is prob- 
ably an error. //e@mulon schrankiis probably based ona 
faded example of Yemulon melanurum. Apparently the 
appropriate name of [Lemulon stezndachner? should stand. 
