728 



It is probable that A. aculeatus has subsequently often been over- 

 looked and mistaken for .4. olfersii. A large specimen^ probably full- 

 grown (total length 70 mm) is found off the Norwegian coast, brought 

 by the Gulf Stream, and is preserved in the Christiania Museum ^. 

 Another specimen in that museum — total length 65 mm — was found 

 in the sea midway between the Bermudas and the Azores. 



Fam. Myctophidae. 



Lampadeiia cliaresi n. sp. 

 Diagn. Length of head contained 4,37 times in total length, 

 height of body 6 times. Eye large, diameter contained 2,70 times in 

 length of head. Origin of dorsal midway between tip of snout and base 

 of caudal. Pectorals but little shorter than height of body, and reach 

 to root of ventral s . 



The two caudal luminous glands large, considerably larger than 

 the diameter of the eye; the length of the ventral one almost equal to 

 the height of the body. Two scales between the adipose tin and the 

 dorsal luminous gland. 



The photophores exceedingly small, separated by a black septum ; 

 M. postero-laterales 2; M. praecaudales 3, all separate (the last in 

 the lateral line) ; M. pectorales5 (the fourth spot at the same height as 

 the third). 



Colour blackish. 



Radial formula: D. 13; K. 14; L. lat. 36; gill rakers on the first 

 branchial arch, 20. 



Habitat. The Azores. 



One specimen, resembling in all main characteristics L. speculigera, 

 Goode & Bean, 1895 6, but differing principally in the relatively larger 

 luminous glands, larger eyes, lesser height of body, and certain differences 

 in the arrangement of the photophores. 



Measurements. 



Total length 87,1 mm. 



Length to tip of central caudal rays . . 78 



Length of head 19,9 - 



Horizontal diameter of eye '^^^ - 



Greatest height of body (at ventrals) . . 14,5 - 



Length of pectoral 12 



Length of ventral 11 



5 Arch. f. Math, og Naturv. Vol. 23. No. 7. p. 22 (Christiania, 1901). 



^• Oceanic Ichthyology, p. 85. PL XXVI. No. 99 (Washington 1895). It should 

 be observed that the figure of L. speculijjera given in that work, does not correspond 

 in every detail to the description, nor can it be considered quite correct. The letter- 

 press, moreover, is not without errata. 



