102 



U.S. NATIONAL MUSEUM BULLETIN 2 60 



distally produced on pereopod 1, dactyls poorly saber shaped, shorter 

 than sixth articles ; dactyls apparently not saber shaped on pereopods 

 3-5 (damaged) ; telson apically emarginate, armed with small setae. 



HoLOTYPE. — AHF No. 6127, male, 6.0 mm. 



TypE-LOCALiTY.— Station 7358, 27°35'45'' N, 115°08'30'' W, 1095- 

 1205 m, Apr. 21, 1961. 



Material.— Stations 7229 (2), 7231 (1 frag.), 7358 (1). 



Relationship. — The diagnosis distinguishes this species from A. 

 callida in gnathopods, pereopods 1 and 2 and epistome. Aceroldes 

 synparis (J. L. Barnard, 1961) differs from A, edax in its broader 

 and shorter hand of gnatbopod 2, narrower anterior coxae, and a 

 distally rounded telson. 



Figure 46. — Aceroides edax, new species, holotype, male, 6.0 mm, 7358: a, maxilliped; 

 b,c, mandible; d, lower lip; e,f, maxillae 1,2; g, head and labrum, lateral; h, telson. 



Aceroides edax closely resembles A. Umicola K. H. Barnard (1925) 

 in its head, telson, gnathopods, and mandible but the latter is said to 

 have coalesced imier lobes of the lower lip, and five or six setae on the 

 inner lobe of maxilla 1 (the specimen is 15 mm long and thus would 

 be expected to have more setae). The principal difference appears to 

 be in the expanded articles of pereopods 1 and 2 of ^. Umicola^ which 

 resemble those of A. latlpes (Sars) (see 1895, pi. 120, fig. 2). Article 

 2 of pereopods 3 and 4 is not as ovately expanded in A. edax as it is 

 in^. Umicola. 



One might consider that Aceroides edax and A. synparis (J. L. 

 Barnard, 1964b) (described as Oediceroides {Patoides) synparis) of 

 the Caribbean Sea are an analogous pair of species; Aceroides edax 



