24 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 119 



epimeron; A. kurilicus, A. magnus, uropod 2; A. ampulloides, A. 

 laticoxae, uropod 2 and eyes; A. ochoticus, eyes and epistome; A. 

 compactus and A. oculatus, eyes and spines of pereopods 1 and 2. 

 Distribution: Monterey Bay (type locality), 18-98 m. 



Anonyx carinatus (Holmes) 



Lakota carinata Holmes, 1908, pp. 498-500, fig. 9. — Gurjanova, 1962, pp. 



302-303, fig. 100. 

 Anonyx carinatus. — Hurley, 1963, pp. 103-108. 



Material: 6477 (1). 



Distribution: Monterey Bay to southern California, 33° N., 

 69-200 m. 



Centromedon pavor, new species 



Figure 5 



Diagnosis: Lateral cephalic lobes short, rounded terminally, sep- 

 arated from large rostral area by deep concavity; antenna 1 very stout, 

 articles 2 and 3 short, telescoped into article 1, article 1 of flagellum 

 heavily armed with aesthetes; coxa 5 with well-defined posterior lobe; 

 urosomite 1 bulbous dorsally. 



Holotype: Allan Hancock Foundation no. 5922, female, 2.9 mm. 



Type locaUty: Station 6459, Monterey Bay, California, 84 m, 

 September 1959. 



Material: Two specimens from the type locality and 6462 (1),6477 (1). 



Relationship: The genus Centromedon became monotypic when 

 Barnard (1962d) removed all but its type species to the genus Uristes. 

 Centromedon pumilus (Liljeborg) differs from C. pavor in having very 

 acute, projecting lateral cephalic lobes, slender first antennae, a sym- 

 metrically lobed fifth coxa, and a poorly ornamented first urosomite. 

 As the specimens at hand and that figured by Sars are females, these 

 differences cannot be attributed to sexual dimorphism. The mouth- 

 parts of C. pavor correspond to those figured for C. pumilus by Sars 

 (1895, pi. 34, fig. 2). 



Hippomedon denticulatus (Bate) 



Hippomedon denticulatus. — Hurley, 1963, pp. 137-140, fig. 45. — Barnard, 1964a, 

 p. 230; 1964b, pp. 80-82. 



Material: 6426 (1), 6430 (1), 6445 (2), 6447 (1), 6471 (4), 6474 (2), 

 6477 (5). 



Distribution: Subarctic-boreal of North Atlantic and North Pacific 

 Oceans, 0-924 m; in the eastern Pacific its southern record is off San 

 Cristobal Bay, Baja California. 



Lepidepecreum gurjanovae Hurley 



Lepidepecreum gurjanovae Hurley, 1963, pp. 49-53, figs. 13, 14. 

 Material: 6469 (1), 6474 (1). 



