194 • CALIFORNIA ACADEMY OF SCIENCES 



340. Homesthes caulopus Gilbert. 



Plate XXXII, Fig. 61. 

 Homesthes can/opus Gilbert, /. r. , p. 2394. 



Head 3!; in length; depth at base of ventrals 4, at middle of abdomen 3|; least depth of 

 caudal peduncle 3 in length of head; snout 4; eye 4 to 4^; longest dorsal spine 2f ; last dorsal spine 

 3^; longest (tenth) dorsal ray 2; longest (fifteenth) anal ray 2^; ventrals if; longest pectoral ray if 

 to if; caudal i^. Dorsal XII, 15 or 16; anal II, 17; pectorals 14; ventrals I, 4. 



Robust, moderately compressed, with wide heavy head and short bluntly rounded snout, the 

 anterior profile of which is nearly vertical. In shape and general appearance much resembling- Hypso- 

 blennius gilberti. Mouth very wide, horizontal, short, the maxillaries reaching vertical from hinder 

 edge of pupil, 3 to 34 in head. Teeth as usual in this group, the posterior not enlarged or canine- 

 like. Nostrils with slightly elevated margins, scarcely tubular, the hinder edge of anterior nostril 

 produced into a conspicuous laciniate flap, about two-thirds as long as the diameter of orbit. A similar 

 but larger orbital cirrus, divided nearly to the base into six or eight slender filaments. Interorbital 

 space deeply grooved, without median ridge, opening posteriorly into the deep transverse groove 

 which separates the orbital region from the somewhat swollen occiput, its width i^ eye. The mucous 

 canals of head give off transverse branches which open by numerous pores, which thickly beset the 

 snout, subocular region, top of head, preopercle, and upper portion of opercle. Width of gill-slit 

 equaling or slightly exceeding one-half length of head, confined to area above lower base of pectorals. 



First dorsal spine over margin of preopercle; spinous dorsal low, of nearly uniform height, 

 much lower than second dorsal, the spines rather strong at base, with weak reflexed tips; membrane of 

 last dorsal ray joined to extreme base of rudimentary caudal rays. Anal low, rising slightly poste- 

 riori)', leaving a short free interval between its last ray and the caudal. 



Lateral line strongly developed anteriorly for a distance equaling length of head; from that 

 point it is only faintly visible, declining abruptly to middle of sides, along which it may be traced to 

 base of caudal; the anterior portion gives off numerous pairs of short transverse lines, each of which 

 ends in a pore; no pores or lines are visible posteriorly. 



Blackish, without sharp markings, the sides with irregular light blotches, some of which are 

 subcircular in outline and contain one or more black central specks; the light markings near the back 

 are elongate and vertically placed, faintly outlining dark bars of the ground color; lower parts lighter. 

 A vertical black blotch on cheek behind eye; no distinct bars on head; tentacles whitish. P'ins all 

 blackish; the anal, the ventrals, the lower caudal and pectoral rays deeper black; anal and caudal 

 margined with white, some of the dorsal rays narrowly tipped with white. 



Two specimens, 102 and 115 mm. long, from Panama Bay. 



341. Scartichthys rubropunctatus {Cuvier £ Valenciennes). 

 Recorded once from Panama (Joi'daii & Gilbert, 1882 n, p. 628). 



342. Rupiscartes atlanticus {Cuvier d- Valenciennes). 



There is no Panama record for this species, which is known, however, from 

 the Mexican coast to Guayaquil (Boulenger, 1898-9, Vol. XIV, p. 8). 



343. Emblemaria nivipes Jordan & Gilbert. 

 Tlie type from Pearl Islands, Panama Bay; not seen by us. 



