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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 86 



interorbital 6.3 (6.6 to 7.2) ; horizontal diameter of eye 16.4 (16.7 

 to 17.2) ; length from tip of snout to rear margin of maxillary 29.1 

 (29.0 to 30.4) ; length from tip of snout to origin of soft dorsal 55.8 

 (52.2 to 57.1) ; greatest depth of body 69.6 (72.2 to 77.8) ; least depth 

 of caudal peduncle 11.6 (12.6 to 15.0) ; length of caudal peduncle, 

 posterior base of anal to base of middle caudal rays, 11.9 (14.5 to 

 16.0) ; length of longest gill raker on first gill arch 10.1 (8.7 to 10.1) ; 

 length of abdomen 39.3 (37.7 to 40.0) ; distance from origin of soft 

 dorsal to base of caudal fin rays 49.4 (52.2 to 55.8) ; length of base 

 of dorsal fin 284 (27.6 and 29.1). 



Remarks. — This species differs from latematus in the number of 

 anal photophores, 9 instead of 11 or 12, and in their size and ar- 

 rangement. If Parr's (1937, p. 56) figure 22 is correctly drawn, 

 then the width of the first three is equal to the width of the last 5 

 or 6 anal organs in latematus., but only equal to the last 3% to 4^4 

 in asteroides and triphanos; the first supra-abdominal photophore 

 extends above the second organ a distance less than its width in 

 latematus but more than its width in asteroides; the third supra- 

 abdominal organ is only slightly higher than the second, or is even 

 with it. 



The name asteroides refers to the starlike photophores. 



"rv- 





Figure 4o. — Polyipnus triphanos, new species: Holotype (U.S.N. M. no. 103027). 



POLYIPNUS TRIPHANOS. new species 



FiGtJBE 45 



Holotype.— V.S.'NM. no. 103027, 20 mm in standard length, 

 Albatross station 5368, latitude 13°35'30" N., longitude 121^48' E., 

 181 fathoms, February 23, 1909. 



