184 



CALIEX)RNIA ACADEMY OF SCIENCES 



evidently eiilarnod. Upper jaw with a narrow band, the posterior row .sli<j;lilly 

 enlarj^ed. Rej^ion in front of ventrals naked. Lateral lines disappearint^ near 

 middle of tail. No pores at base of pectoral rays on inner surface. 



Measurements in Hundredths of Length without Caudal. 



Length to base of caudal in mm 



Length of head 



Greatest width of head 



Length of snout 



Diameter of eyetwll 



I nterocular width 



Length of maxillary -... 



Greatest depth of botly 



Depth of caudal peduncle 



Snout to first dorsal spine 



Base of second dorsal 



Snout to front of anal 



Base of anal 



Length of caudal 



Length of pectoral from axil 



Length of ventral 



Base of caudal to bend in upjKr lateral line. 

 liase of caudal to bend in lower lateral line.. 



329. Porichthys margaritatus (Richardson). 



Taken by the Albatross in Panama Bay at Station 2802, at a depth of 10 

 fathoms. Also reported by Dr. Boulenger (1899, p. 3) from Rio Tuyra, Darien (as 

 P. notatus). 



330. Porichthys greenei sp. nov. 



Plate XXX, Fig. 56. 



A small light-colored species, taken by us in the tide-pools of the Panama 

 reef. It differs from all other species of the genus in the complete union of the 

 dorsal and anal fins with the caudal, in the small head, and in the comparatively weak 

 development of the phosphorescent spots. 



Head 4^ to 4 J in length; depth 5 J. The mouth is oblique, the lower jaw longest, the ma.x- 

 illary extending beyond the eye, slightly more than half length of head. A pair of slender cutaneous 

 slips at tip of snout. Tip of maxillary with a cutaneous flap, the free edge of which is fringed. 



