572 Bulletin ^7, United States N'ational Museum. 



Mediolateral pliotophores 2; anterolaterals 2; posterolateral 1, (over 

 break iu anal series) which, as in Mj/ctopluun 2"'"t''«'«»i, is considerably 

 in advance of the vertical connecting the root of the soft dorsal with 

 those of the last rays of the anal; candal pliotophores somewhat apart- 

 as in Mijctophum phoifjodc.s ; snperanals 7-9 + 4-9. Length 4 inches. 



Open seas, al)undant in the Mediterranean and iu the Atlantic otf both 

 coasts. \i Mintophuin hoojis and ifycioplnim calif uniieiise are the same, as 

 is possible, the species is also not rare in the eastern and southern Pacific. 

 As, however, no other species o( Mycto2)hi(hr is common to the Atlantic and 

 Pacific coasts of North America, we may provisionally regard M. valij'or- 

 nienw as distinct from M. humholdti. (Named for Alexander von Humboldt, 

 1769-1859, author of '' Cosmos," whose interest in the relations of life to 

 surroundings included some exact knowledge of fishes.) (En.) 



Gaslei-opeUcushumholdli, Risso, Iclith. Nici', liOS, 1810, Nice. 



ScopelHshmnboldU, GiiNTHEU, Cat., v, 407,1864; Lutkkn, Spoliii Athintii-a, ii, ;U, 18!I2; Ghodk A 

 Bean, Oceanic Ichtliynlogy, 73, fig. 82, 1895. 



S.iS. MYCTOPHIIM C.\LIPORiVIEXSE, Eigeumanu A Eigenmaiiii. 



Head 3i ; depth 5 ; eye very large, 3 in head (specimens of 4 inches). 

 D. 14; A. 21; scales 42. Phosphorescent spots arranged exactly as in M. 

 hiimhoJdti. Body compressed, elongate, with long slender tail. Head 

 short and deep; preopercular margin little oblique; maxillary 1^ to 1^ in 

 head. Scales entire. Ventrals reaching beyond vent nearly to anal; 

 pectorals short, (not reaching in the type to second third of ventrals). 

 Cortez Banks, near San Diego. Very close to M. humbohlfi, but said to 

 have shorter pectorals. It is probably not distinct, as in one of Dr. 

 Eigenmann's types examined by us, the pectorals are as long as in M. 

 Innnboldti. Both pectorals have been partly digested, but the slenderiays 

 on both sides reach middle of dorsal and beyond middle of ventrals. 



? Miirtiiphinii },nnps, '■■'■ RicHAKPSON, Voy. Erebus and Terror, '^'^, 1845, open sea between Aus- 

 tralia and New Zealand. 

 Myclophuia ridi/.iriiiriise, Eioexmann, West .\niericaii Scientist, Nov. li, 1880, 124, San Diego. 

 fScopeliis boapn, Gi'NTHKR, ("at., v, 408, 18G4. 



S.-)5). MTCTOPHUM (UlACILE (Eiitken). 



Head 5; depth 4f ; eye small, about 4 in head. D. 12; A. 19; scales 41. 

 Caudal spots 2, very close together; posterolateral 1; anal spots about 

 6 + 12, in a slightly interrupted series; supra-anal spots 2, well separated. 

 Body slender, the head deep, the snout not very blunt; pectoral mod- 

 erate, reaching front of dorsal. Open Atlantic, west to 48° W., 23° N. 

 (Liitken.) {(jrucUis, slender.) 



Saipelus yracilis, LvTKEN, Spolia Atlantica, 35, ii, 1.sii2, open Atlantic. 



? Myclophum hians, Richardson, Voy. Erebus and Terror, 41, pi. 27, 1845, open sea, locality 

 unknown. 



* Til is nominal species, as EUtken has noted, agrees witli 71/. hmubohUi in all respects except 

 that the scales are said to be fewer, 37 to 39 in the lateral lino instead of 41. The eye is a little 

 larger, about 3'. ,5 in head. This species is from the open Pacific, between Australia and New 

 Zealand. It has also been lecorded (by Giinther) from Vancouver Island, but doubtless the 

 closely related ,V. califoiniensc has been taken for it. Perhaps both boaps and califurniense are 

 identical with humbuldti. 



