14 PROCEEDINGS OF THE NATIONAL MUSEUM vol.76 



LAMPANYCTUS ELONGATUS Costa, 1844 



Scopelus elongatus Costa, 1844. 



Lampanyctus elongatus Parr, 1928 (with full synonymy). 

 Notoscopclus brachychir Eigenmann and Eigenmann, 1889. 

 Catablemmela brachychir Eigenmann and Eigenmann, 1891. 

 Notoscopclus quercinus Goodb and Bean, 1895. 

 Macrostoma qiiercinum Jordan and Evermann, 1896. 

 Myctophum {Lampanyctus) quercimim Br^vuer, 1906. 



Material investigated. Type specimen of Notoscopelus hrachi/eMr 

 Eigenmann and Eigenmann, 1889, No. 76336, U.S.N.M. From Cor- 

 tez Banks, California. Type specimen of Notoscopelus quercinus 

 Goode and Bean, 1895, No. 43789, U.S.N.M. From the Newfound- 

 land Banks. 



Only a few of the photophores can still be made out with cer- 

 tainty on either of the two above mentioned type specimens, which 

 are in a rather bad condition. There is, however, nothing to refute 

 the view already previously held by the author that Notoscopelus 

 brachychir and quercinus are both perfectly identical with Lam- 

 pofiiyctus elongatus Costa, as already made out by Jordan and Ever- 

 mann, 1896 (p. 556) in the case of the former of the two nominal 

 species. 



LAMPANYCTUS CASTANEUS Goode and Bean, 1895 



Notoscopelus castaneus Goode and Beian, 1895. 

 Macrostoina castaneum Jordan and Evermann, 1896. 

 Myctophum (Lampanyctus) castaneus Braue3?, 1906. 

 Lampanyctus castaneus Parr, 1928. 



Material investigated. Type specimen No. 31706, U.S.N.M. From 

 the northwestern Atlantic. 



The condition of the type specimen makes it quite impossible to 

 observe any details of specific significance, practically all of the 

 photophores having now become lost. Nothing can therefore be 

 added to the unfortunately rather inadequate original description, 

 and the accuracy of the details shown in the only illustration of this 

 species (Goode and Bean 1895, fig. 95, pi. 25) can not be determined. 



LAMPANYCTUS GtJNTHERI Goode and Bean, 1895 



Lampanyctus giintheri Goode and Bean, 1895; Jordan and Evermann, 1896; 



Waiie, 1910 (?) ; Park, 1928. 

 Myctophum {Lampanyctus) giintheri Brauek, 1906; Pappenheim, 1914. 

 Lampanyctus melanothorax, Parr, 1928. 



Material investigated. Type specimen No. 43777, U.S.N.M. New- 

 foundland Banks. 



It appears from an inspection of the above type specimen that the 

 lateral line scales of L. giintheri are very much enlarged indeed, 

 particularly on the posterior part of the body, where their broad 

 posterior (free) margins extend over approximately three-fourths, 



