8 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 



EURYCOPIDAE 

 Eurycope califomiensis, n. sp. 



(Plate 3) 



Diagnosis: General body configuration oval-oblong with all 

 peraeonal segments distinct. Frontal area of cephalon with acutely 

 rounded medial projection. Pleotelson of one segment; longer than 

 wide, with posterior angle obtusely rounded. Anterolateral edges of 

 first four peraeonal segments acutely pointed and segments of about 

 same size. Next three peraeonal segments with less acute points ; seventh 

 segment longest and largest. Antennae missing, but base of first an- 

 tenna flattened with two spines which project forward. Maxillipedal 

 palp very reduced in size ; endite with four coupling hooks. Molar proc- 

 ess of mandible with many teeth ; incisor with only three teeth ; last 

 segment of palp with many setae ; second segment of palp with row of 

 spines. Uropods missing. 



Measurements: Holotype female 3.5 mm long. 



Type locality: 7032(2) ; Newport Canyon; 478 m; May 5, 1960; 

 green mud and gray sand, some very coarse sand. Lat. 33° 31' 28"N, 

 Long. 117°54'58"W. 



Materials examined: 7032(2). Two females. 



Distribution : Known only from the type locality. 



Affinities: The species is similar to Eurycope magalura Sars (1899) 

 but E. magalura has a maxillipedal palp of normal dimensions, whereas 

 the maxillipedal palp of E. califomiensis is greatly reduced in size. The 

 frontal projection of the cephalon is notched in E. magalura, but not 

 in the new species. 



ILYARACHNIDAE 



Ilyarachna G. O. Sars 



Ilyarachna acarina Menzies and Barnard 



Ilyarachna acarina Menzies and Barnard, 1959, pp. 9, 10, fig. 2. 



Ilyarachna acarina Schultz, 1964, p. 310. 



Materials examined: 2725(2) ; 2727(1) ; 2793(2) ; 2999(2) ; 3385 

 (19) ; 6805(2) ; 6806(3) ; 6845(2) ; 7174(10). 



Remarks: The species was taken within the depth and distribution 

 extremes listed by Menzies and Barnard ( 1959). 



