no. 3627 ECHINIPHIMEDIA — BARNARD 3 



Schellenberg (1931) has a deeply incised upper lip, a tendency toward 

 which may be seen in one species of Echiniphimedia. Palp articles 1 

 and 2 of the maxilliped are broadened in Pseudiphimediella. The 

 strong character difference between Echiniphimedia and the other 

 three genera remains the acquisition of submarginal coxal teeth in 

 adult Echiniphmeidia and the acquisition of pereonal and pleonal 

 teeth supernumerary to the basic acanthonotozomatid plan. 



Key to the Species of Echiniphimedia 



1. Pereonites 1-4 covered densely with teeth and cusps 2 



Pereonites 1-4 smooth or rarely with vestigial spine teeth echinata 



2. Head with submarginal tooth on cheek below eye (in addition to teeth of 



anteroventral cephalic corner) ; pereonites 2-6 with 2 vertical rows of very 

 slender teeth; coxae 1-3 with 3-7, 4-8, and 5-15 teeth respectively . hodgsoni 

 Cheek below eye lacking tooth (but anteroventral cephalic corner with notch 

 and teeth) ; pereonites 2-6 with 1 vertical row of stout teeth; coxae 1-3 

 with 1-2, 2, and 2-3 teeth respectively scotti 



Echiniphimedia hodgsoni (Walker) 



Figures 1-3 



Iphimedia Hodgsoni Walker, 1906, p. 152. 



Iphimedia hodgsoni. — Walker, 1907, p. 30, pi. 11 (fig. 18). 



Echiniphimedia hodgsoni. — K. H. Barnard, 1930, pp. 359-360, fig. 31. — Schellen- 

 berg, 1931, p. 123.— K. H. Barnard, 1932, p. 125.— Nicholls, 1938, pp. 

 82-84, figs. 43, 44. 



Description. — Female, 38 mm, ET 428: Pereon, coxae, second 

 articles of pereopods 3-5 and pleonites 1-4 covered densely with 

 fixed submarginal, acute teeth, on pereonites and pleonites teeth 

 arranged in crude vertical rows, generally 2 rows per segment or 3 

 rows on posterior metasomal segments; teeth on coxae arranged in 

 rows to some extent; tubercles rarely occurring on ventrolateral 

 margins of pereonites 2-5 and on dorsolateral margins of pleonites 

 2-3 (possibly representing scars of broken teeth); pleonite 5 with 

 large dorsolateral tooth on each side with smaller cusp at its base, 

 pleonite 6 with large mediodorsal tooth; pleonal epimeron 1 with 

 slightly convex posterior margin, posteroventral corner with minute 

 tooth extended from lateral ridge, epimera 2 and 3 with much larger 

 posteroventral tooth and lateral ridge, epimeron 3 with large medio- 

 posterior tooth in addition to posteroventral tooth; head with stout 

 rostrum of medium length, lateral planiform base produced laterally 

 into large, hemispherical ocular bulge with pigmented ommatidial 

 tissue, base with supraocular tooth, cheek below eye with 2 teeth, 

 then, ventrally, cheek with deep incision bordered below by large 

 tooth; articles 1 and 2 of antenna 1 extraordinarily palmate, resem- 

 bling moose antlers, article 3 short and simple, accessory flagellum 



