566 Bulletin </7, United States Natiotial Museum. 



Type specimen with 13 pUotopbores in the anal series; a wide break 

 over roots of last 2 rays of anal; no posterolaterals ; 2 raediolaterals, the 

 anterior the lowest; two anterolaterals, the anterior and highest very 

 small, above the axil of the pectoral or very near the lateral line, the 

 posterior one somewhat more than midway between this and the anterior 

 of the mediolateral group, and forming, witli the two photophores in that 

 group, an obtuse isosceles triangle, with the anterior of the medial group 

 at its apex ; of the 4 precaudal photophores the last 3 are the most 

 nearly together, and form a nearly vertical line at the base of the lower 

 caudal lobe; a large, apparently luminous, pearl-colored spot under tip 

 of flap of opercle. One specimen about 4 inches long, obtained by the 

 Alhatroi^e at station 2127, in 19° 45' N. latitude, 75° 01' W. longitude, in 

 1,639 fathoms. (Goods & Bean.) (liwidus, shining.) 



Mthoprora hicida, Goode & Bean, Oceanic Ichtliyology, 88, fig. 102, 1S95, Gulf Stream. (Type, 

 No. 44084. Coll. Albatross.) 



848. iETHOPRORA. EFFULGENS, Goode & Bean. 



Head nearly 4; depth 4; eye large, 2i in head. D. II, 13; A. II, 14 j 

 scales 35 or 36. Least depth of tail i height of body. Head considera- 

 bly longer than high, the flap of operculum extending above and behind 

 axil of pectoral. Snout exceedingly short and obtuse, as in ..7?. metopo- 

 clampa; the luminous organ enormous, gland-like, overlapping entire 

 anterior margin of orbit, extending down upon edge of jaw and extend- 

 ing backward almost as far as in uli. mctopodampa. Cleft of mouth 

 oblique, somewhat curved, the maxillary reaching nearly to angle of pre- 

 operculum. Origin of dorsal somewhat in advance of vertical from that 

 of ventral, w^iich touches root of second dorsal ray ; last dorsal ray over 

 roots of short spines preceding anal ; insertion of veutrals considerably 

 posterior to a point equidistant from root of adipose dorsal and anterior 

 margin of the orbit ; origin of adipose dorsal over interspace between 

 antepenultimate and ultimate anal rays ; pectoral stout and much 

 shorter than ventral, not reaching much more than halfway to its root. 

 Scales smooth, those in the lateral line somewhat enlarged, shiny, and 

 conspicuous; the lateral line descending in a gentle curve to a point 

 above origin of ventral. Arrangement of the photophores very peculiar. 

 A break in series of superanals, there being 5 on lower part of caudal 

 peduncle behind anal ; apparently 2 posterolaterals, the posterior and 

 highest near lateral line, and forming the beginning of a scries of 8, 

 arranged in an arc of a circle, the last being the highest in the group of 

 mediolaterals, of which there are 4 ; but one anterolateral, which is 

 above axil of ventrals, slightly behind it and about midway between 

 it and lateral line; a large, triangular, luminous patch in the space 

 between the axil of pectoral and the flap of opercle, which covers its 

 anterior portion, and is itself decorated with a circular photophore ; 

 apparently a luminous patch along anterior margin of preopercle. Two 

 siiecimens from deep water in the Western Atlantic. (Goode »fe Bean.) 

 {effulgens, shining out.) 



Jl'ltUoprmaefnIgcn.t, Goode & Bean, Oceanic Ichthyology, 88, fig. 103, 1895, Brown's Bank and 

 Albatross Station 2127, 19° 45' N., 75' W., in 6S9 fathoms. (Type, No. 43770.) 



