184 



CALIPOKNIA ACADEMY OF SCIENCES 



evidently enlarged. Ui^per jaw with a narrow band, the posterior row slightly 

 enlarged. Region in front of ventrals naked. Lateral lines disappearing near 

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



Measurements in Himdredths of Length without Caudal. 



Length to base of caudal in mm 



Length of head 



Greatest width of head 



Length of snout 



Diameter of eyeball 



Interocular width 



Length of maxillary 



Greatest depth of body 



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 upper lateral line 

 Base 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 16 

 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 phosjjhorescent spots. 



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

 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. 



