336 University of California Publications in Zoology. [Vol.6 



Length: 6.2mm. 



Coloration: The intestinal contents are light yellow; light rose pigment 

 occurs in the bristles of the feet, in the maxillipeds, anil there is a fleck 

 around the mouth. 



Occurrence: Station 1252, tow at 310 f., sounding 345 f., July 11, 1906; 

 station 1315, vertical from 320 f., sounding 330 f., July 19, 1906. 



The fifth feet of the San Diego specimens show slight differ- 

 ences as compared with the figures of Giesbr'echt (1892, pi. 29, 

 fig. Ih. but they are not sufficient to warrant a specific dis- 

 tinction. 



Genus Phyllopus Brady. 

 Phyllopus integer n. sp. 



PI. 27, figs. 11, 13, 17; pi. 31, fig. 90; pi. 32, figs. 109, 110. 



The sexes are alike in conformation of the head and thorax. 

 The head is smoothly rounded in dorsal and side views (pi. 27, 

 figs. 13. 17). The thorax is symmetrical and there is a bay or 

 indentation in the dorsal margin of the last segment near the tip 

 (pi. 27, fig. 11). The rostrum is short and heavy (pi. 27, fig. 17). 

 The cephalothorax is -t-segmented and the greatest width is 

 contained two and one-sixth times in the length along the mid- 

 dorsal line. The abdomen in the male is 5-segmented, and with 

 the furca is less than half as long as the cephalothorax. The 

 genital segment in the female is half the length of the abdomen, 

 the other segments being of equal lengths. Each of the three 

 middle segments in the male is longer than the genital segment ; 

 the middle segments are of equal lengths among themselves. 



The anterior antennae reach back to the posterior border of 

 the second segment of the cephalothorax. The other appendages 

 do not show any specific differences except in the case of the fifth 

 feel ■ i heir structure may be understood from pi. 32, figs. 109 

 and 110. 



Length: Female, 3.54mm.; male, 2.64 mm. 



Coloration: Whitish and somewhat translucent in formalin. 



Occurrence: Among other stations, station 1249, tow at, and vertical 

 from, 325 f., sounding 370 f., July 11, 1906; station 1339, vertical from 

 310 f., sounding 330 f., July 21, 1906. 



Wolfenden (1904, p. 124, pi. 9, fig. 16) was the first to 

 describe the male of Phyllopus, but was in error in stating that 



