500 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 117 



Elasmopus atolgidus is also related to E. perditus Reid (1951, western 

 Africa), described as a unique male. Specifically the new species 

 differs only by the fact that Reid stated that the telsonic spines were 

 apical whereas in the present species they are considerably subapical. 

 Until males of the new species and females of E. perditus can be 

 compared no other distinctions can be stated. 



Distribution: Ifaluk Atoll, Caroline Islands. 



Elasmopus brasiliensis (Dana) 



Figure 11 



Elasmopus brasihensis (Dana). — Stebbing, 1906, p. 443 (in part, not E. pecteni- 

 crws).— Chevreux, 1911, pp. 222-225, fig. 12, pi. 15 (figs. 14-20). 



Other references with unverified identification: 



Elasmopus brasiliensis (Dana). — Stebbing, 1917a; Poisson and Legueux, 1926; 



Chevreux, 1927; Alderman, 1936; Ruffo, 1938; Shoemaker, 1942; Ruffo, 1947. 

 not Elasmopus brasiliensis (Dana). — Oliveira, 1951, pp. 4-10, pis. 1-4, figs. 



1-30 { — E. pectenicrus [Bate]). 



Material: Abbott stations 87-H-2 (7), 89-F-3 (11), 95-L-4 (2), 

 95-0-4 (3). 



Remarks: No satisfactory topotypic reidentification of Elasmopus 

 brasiliensis (Dana) has been made since its original description. The 

 type locality is Rio de Janeko. Bate (1862) simply copied Dana's 

 original description and a figure, then proceeded to describe on a 

 later page Moera [sic] pectenicrus with type locality of New Guinea. 



Figure 11. — Elasmopus brasiliensis (Dana), male, 3 mm., Abbott sta. 89-F-3: a, b, gnath- 

 opods 1, 2; female, 3 mm.: c, gnathopod 2. 



In 1906 Stebbing fused the two species, although Dana's and Bate's 

 figures of the two are different; however, Dana's figure and descrip- 

 tion were quite plain and could have contained errors. In 1911 

 Chevreux described and figured specimens from Algeria fitting Dana's 

 species because of the same plainness; however, Algeria is far re- 

 moved from the type locality of E. brasiliensis. In 1916 K. H. 

 Barnard resurrected E. pectenicrus, pointing out Chevreux's (1911) 



