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U. S. P. E. E. EXP. AND SUEVEYS—ZOOLOGY-GENEEAL EEPOET. 
We are not prepared to say whether it is equally distinct from Dr. Ayres’ Liparis mucosus. 
Should this prove to he the case, the latter would constitute a third species of Cyclogaster along 
our northwestern coast. 
Cyclopterus callyodon of Pallas is related to Cyclogaster pulchellus, and if distinct from the 
latter it will constitute a fourth species in the present genus. 
CYCLOGASTER PULCHELLUS, Grd. 
Spec. Char. —Snout bluntly rounded ; posterior extremity of maxillaries extending to a vertical line drawn in advance of the 
pupil. Inferior edge of pectoral fins falciform. Origin of dorsal fin placed somewhat posteriorly to the upper edge of the base 
of the pectorals. Anterior margin of the anal situated nearer the extremity of the snout than the tip of the caudal. Light 
olive brown above, with longitudinal waving lines of darker brown ; abdomen and throat whitish. Sides exhibiting white dotsj 
Stn. —Liparis pulchellus, Ayres, in Proc. Cal. Acad. Nat. Sc. I, 1855, 23. 
A specimen of this species, a little over four inches in total length, was sent, labeled hy Dr. 
Ayres, to the Smithsonian Institution ; it is, therefore, smaller than the one upon which the 
original description is based. 
The body is elongated, compressed, and tapering gradually towards the tail. The head, 
which is moderate, is contained about five times in the total length ; it is furthermore sub- 
quadrangular in shape, declivous towards the snout, which protrudes slightly beyond the lower 
jaw. The eye is sub-circular, its longitudinal diameter entering about five times in the length 
of the side of the head. The mouth is broad when viewed in front, hut is not deeply cleft, 
since the posterior extremity of the maxillary extends.hut to a vertical line drawn in advance of 
the pupil. The lips are well developed and flabby. The teeth are very small, disposed upon 
transversely oblique series on each jaw hone. The branchial apertures are quite small, and 
situated above the base of the pectorals; four slender hranchiostegal rays may he observed 
right and left within the membrane. 
The dorsal and anal fins are united to the caudal; the origin of the dorsal takes place 
somewhat posteriorly to the upper edge of the base of the pectoral fins. The anterior margin 
of the anal is nearer the extremity of the snout than the tip of the caudal fin. Both fins are 
composed of articulated and undivided very slender rays, which increase gradually in height 
and depth towards their posterior portion. The separation between the caudal rays and those 
of both the dorsal and anal is not easily traced, since they are all simple or undivided. The 
ventral disc is elliptical, enclosed sideways hy the inferior prolongation of the pectorals. The 
latter are large, the lateral portion being quite elongated, composed of more slender and 
crowded rays than the inferior portion. The external outline of the fins is falciform ; all the 
rays are simple, though articulated. 
The vent is abdominal, being placed midway between the posterior edge of the ventral disc 
and the anterior margin of the anal fin. 
The skin is scaleless, smooth, and flabby, loosely attached to the muscles. Large and 
numerous mucous pores may he seen upon the head especially, and constituting a lateral line 
upon the anterior region of the body. 
Dr. Ayres describes the color as “ light olive brown, with numerous narrow, waving lines of 
darker brown running longitudinally, and forming in some instances rings and irregular 
1 Proc. Cal. Acad. Nat. Sc. I, 1855, 24. 
2 Zoogr. Rosso-Asiatica, III, 1831, 75. 
