JORDAN AND JORDAN: FISHES OF HAWAII. 11 



51. Dasyscopelus spinosus (Steindachner). (G., p. 599.) 

 Pelagic, Hawaii and southeast. 



Rhinoscopelus Llitken. 



52. Rhinoscopelus tenuiculus Garman. 

 Pelagic, open seas, southeast of Hawaii. 



Myctophum Rafinesque. 



53. Myctophum fibulatum Gilbert and Cramer. (G., p. 596.) 

 Pelagic, Pailolo Channel between Maui and Molokai. 



54. Myctophum affine (Liitken). (G., p. 596.) 

 Myctophum nitidldum Garman. 

 Myctophum margaritatum Gilbert. 

 Rhinoscopelus oceanicus Jordan and Evermann. 

 Pelagic, widety diffused. 



55. Myctophum evermanni Gilbert. (G., p. 597.) 

 Pelagic, Hawaii to Marquesas. 



56. Myctophum reinhardti Brauer. (G., p. 598.) 

 Myctophum braueri Gilbert, non Lonnberg. 

 Myctophum luetkeni Gilbert (on plate). 

 Pelagic, widely diffused throughout the tropics. 



57. Myctophum hoUandi sp. nov. Jordan and Jordan. (PI. I, fig. 2.) 

 Type No. 3897, Carnegie Museum. From Honolulu. 



Head 3.33 in length; depth 4.25; eye 3 in head; snout 6; maxillary 1.5; 

 dorsal rays 1.12; anal rays 1.17; scales 3-35-5; thirty-four photophores on each 

 side. Body moderately elongate, deepest at the occiput, as usual in this group; 

 eye very large; -snout very short; mouth large^ oblique; jaws even; maxillary 

 rather broad, extending beyond ej^e nearly to margin of preopercle. Scales rather 

 large; lateral line well developed. 



Photophores not divided by cross-line; using the nomenclature of Brauer 's 

 Tiefseefische, p. 155, they are arranged as follows: 



Pectoral photophores (maculce pectorales PO) five, four in a continuous series, 

 the last one higher; Suprapectorales (PLO) one, close to gill-opening and to lateral 

 line; Subpectorales (PVO) two, one near lower axil of pectoral, the other a Uttle 

 lower, near gill-opening; Ventrales (VO) three, in a right line between ventrals and 

 vent; Anales (AO) six,. six in a right line with a vacant space equal to one spot 

 above last rays of anal; Posterolaterales (Pol) one, just below lateral line and over 



