12 PKOCEEDINGS OF THE NATIONAL MUSEUM vol.76 



anterior part of the body than there is in M. afjlne (which has 1 

 PLO + ^ PVO + 6 P0^8, only, instead of 9). According to the defi- 

 nition of antero-lateral organs (Goode and Bean, 1895, tentative 

 arrangement of the genera of Myctophidae, with diagram and ex- 

 planation of terms, inserted between pages 70 and 71, loc. cif.), the 

 presence of two such photoi:)hores as described by Fowler would 

 mean, in modern terms, that the second VO is elevated, a condition 

 which also automatically explains the statement that there are ap- 

 parently only 3 " ventrals," the second VO being counted as an 

 antero-lateral. Fowler's larger specimen, therefore, would probably 

 belong in division B, II, e, 2, x (p. 60) in the previously rendered key 

 to the genus Myctophum (Parr, 1928), but does not seem to have 

 any relationship to M. affine, in which the 4 VO are all situated on 

 the same level. 



MYCTOPHUM REINHARDTI Liitken. 1892 



Scopelus reinJiardti Lutken, 1892. 



Myctophum revtiJiardti Parr, 1928 (with full synonymy). 



Myctophum hraueri Gilbekt, 1905. 



Material investigated. Type specimen of Myctophuiii hraueri Gil- 

 bert, No. 51527 U.S.N.M., from Hawaii. 



The identity of M. hraueri Gilbert 1905 (p. 598 and Plate 70, 

 fig. 1 ^^) with Liitken 's M. reinhardti has already been established 

 by Gilbert, 1908 (p. 219), and can only be confirmed by the author 

 after an inspection of the type-specimen of the former nominal 

 species. 



MYCTOPHUM HYGOMI Lutken, 1892 



Scopelus hygomi Lutken, 1892. 



Myctophum hygomi Parr 1928, (with full synonymy). 



Myctophum remiger Goode and Bean, 1895. 



Material investigated. Type lot of Myctofhmn remiger Goode and 

 Bean 1895, No. 43792, 9 specimens from the western Atlantic. 



Inspection of the type specimens of M. remiger G. a. B. only serves 

 to verify the identity of this form with Liitken's M. hygomi as al- 

 ready made out by Jordan and Evermann, 1986, page 573. 



The sample showed the following compositions of organs in the 

 anal series, each side being counted separately. 6 + 7 J. 6> in 4 cases; 

 7 + 6 ^6^ in 12 cases; and 7 + 7 AO in 2 cases (1 specimen). Asym- 



metry of the nature yq^ J.(9 was found in two specimens. 



Known from the Mediterranean, the Atlantic, and the Indian 

 Ocean?. 



"Misnamed M. lutheni in the legend of the figure (see Gilbert, 1908). 



