1877.] 43 
{Cope. 
tips are about equal. Scales in a vertical line from the vent, 19-1-35. 
The diameter of the eye enters the length of the head 5.4 times; the head 
enters the length 4.17 times ; and the depth into the same 4.5 times. There 
is a small cirrhus at the anterior nostril ; a stout short one with a fringed 
border projecting from below the superior posterior border of the orbit, 
and a dermal flap with a fringed border on each side, extending from 
near the middle line, along the posterior border of the skul] to opposite the 
superior third of the orbit. The teeth in both jaws are of two kinds; the 
external larger in a single row, and the internal smaller, in several rows 
of the former are stout and compressed, and considerably exceed in size the 
corresponding ones of the C. monocirrhis. The patches of small teeth are 
confined to the anterior part of the lower jaw, but extend a little further 
posteriorly in the upper jaw. The palatine teeth are few and coarse. 
M. 
Total length....... Raa eater a ae chetnciats sieleys! sae hal eves s atejaiore COS 
WOME LONOBD Ubicet srerete aie st erajortiarajeiaie.c acve.s svoi0 a atblee syed lelaent 022 
ne Ase OUePEGlOLAM MM. cestaas«saiete) scsi sh cue tone ate retorats 073 
fe ce MONIT SIA TUNL cee ote ictotas set sorepeye elevate cele acts, aah 115 
2 Sere GEUULG MTT ater ateratatavay sce et seater ci2 craccveret oye see 025 
Depa Orbow yl orreinrol, anal 5)! Pa es ae a eel 050 
PARLOR DMT, WACUINS stort sales cic edi crae ee alate! ca'siaia sale wee ate .009 
The color is a light, leathery-brown, with four vertical cross bars of a 
darker brown, of which lateral portion projects posteriorly from the dorsal 
portion. In addition to these, the body and head are thickly marked with 
small, dark-brown spots ; similar spots on the dorsal caudal and base of 
pectoral fins. 
No. 40, Callao Bay. 
31. SICYASES PYRRHOCINCLUS, sp. NOv. 
A small species of rather slender form. The head is one-fifth of the total 
length including caudal fin; the depth of the body is one-eleventh of the 
same The long diameter of the/orbit is one-fourth that of the head, ex- 
ceeds the length of the muzzle, and enters the interorbital width one and 
one-half times. The front is flat, and the mouth very small, with a few 
large tridentate incisors, and a smaller number of smaller teeth on each 
side of them in each jaw. The incisors are six above, subvertical, and four 
below, subhorizontal. Radial formula D. 5; C. 1-7-1; A. 4; V. 4; P. 
20. The posterior disc margin is wide, and extends in a broad lamina, ver- 
tically behind the pectoral fin. Pectorals and ventrals connected by mem- 
brane. Suctorial disc 5.6 times in total length; its anterior free margin 
narrow. 
Measurements. M. 
ALG HEN IICRT Des A 8 cree eRe Ooi a ca AGS FON 034 
Gength tolanterion margin Of GisGs. 6. we... ieee eee een .0045 
re POM AMEUSiaterarsicre: ¢ aceieis. sta.e-aielanre mete aroia {sack aie wlieiel ates .016 
ss SPORES UOT LT apsts sma teecsot ty etches s.3 seve sais ataieleie sis 020 
“E SOPLY ETE MM Ci “1a 2) ato) 5h oe 2 prolciaticiat st clsticiala.cheletetare «/<\ «ie .021 
ee SOCAL © Gale vaccates etctoiniciets chalet dertcrenrerta's «1s 028 
