ART. 10 



NOTES ON MYCTOPHINE PISHES — PARR 



9. The taxonomic status of Myctophwn andreae Liitken and Lam- 

 pcmyctus ritteri Gilbert, Fowler's records of MyctopJmm affine from 

 Hawaii (Fowler 1928, p. 69), the variations of DlaphiLs rafmesquei 

 Cocco, and other items of minor importance are discussed. 



10. The original or current definitions are verified without further 

 discussion on all type specimens deposited in the United States 

 National Museum, representing species of the subfamily Myctophinae 

 not specially mentioned in any of the above lists. 



MYCTOPHUM CRENULARE Jordan and Gilbert, 1883 



Tarletonheania crentilaris Gilbert, 1915. 



Myciophum crenulare Parr, 1928 (gives full synouymy). 



Tarlctonbeania tcnua Eigenmann and Eigenmann, 1891. 



Material investigated. Type specimen of Myctophuiii crenulare 

 Jordan and Gilbert, No. 27402 U.S.N.M., Santa Barbara, Cali- 

 fornia. Type specimen of Tarletonbeania tenua Eigenmann and 

 Eigenmann. No. 42882, U.S.N.M., Coronados, California. 



Figure 2. — Myctophum crenulare Jordan and Gilbert 



A very adequate description of M. crenulare is rendered by Gil- 

 bert 1915 (p. 313), who first established the identity of the two 

 above-mentioned nominal species. 



M. crenulare differs from all other species of the genus Myctophum 

 by the presence of only one Pre and by the absence of pores from 

 all of the lateral line scales except a few of the most anterior ones. 

 It is further characterized by the strong compression of head and 

 body, by the slenderness of the caudal peduncle, and by the nearly 

 rudimentary state of the ventral fins, while the pectorals are well 

 developed. 



The type specimen of T aa^letonbeania tenua shows no significant 

 differences at all from the type of M. crenulare^ Gilbert's opinion 

 upon the identity of the two has therefore been fully accepted by 

 the author. 



The various body proportions of the species are also very charac- 

 teristic, and rather different from the usual proportions of th(; genus 



