ALASKAN [SOPODS. 



221 



Holophryxus alaskensis Richardson, new species. 



Body of female irregular in outline. Color uniformly light yellow. Head represented by a bilobed 

 prominence, anterior to squarish body. lives wanting. Dorsal surface of thorax with no trace of 

 segmentation; a few lines only are present, representing creases or folds in the integument and having 



FIG. 



8. — Adult female of Holophryxus cUaske7isis Richardson, new species, a. Dorsal view. - 4$; &, lateral view, x 4|: 



<*, ventral view. i 



no relation to suture lines. The abdomen projects below the thorax — although there is no distinct 

 boundary between these two divisions of tile body — as a triangular process without any trace of seg- 

 mentation and with no appendages. Uropoda and pleopoda are entirely wanting. 



In a lateral view the first live segments of the thorax are represented by the five coxal plates, 

 which bound the oral area, and are not separated by sutures from the dorsal surface of the body. On 

 the ventral side the oral area is bounded anteriorly by the head and laterally by the two divergent 

 rows of coxal plates. The antenna? and antennuhe are quite rudimentary. The antenna:- seem to be 

 composed of three ji lints, the ant ennu he of two. There are five pairs of legs surrounding the oral area, 

 situated just within the two rows of coxal plates. From the bases of these legs ii\e pairs of incubatory 

 plates arise, the last pair overlapping in the middle ventral line. 



-Maxilliped, Hohphi yzit* 

 alaskt jisis, ■ 41. 



Fig. 1"- — Terminal segment of first lamella of 

 incubatory plates, Holophryxus alaskt nsis, U. 



No males were found. Three specimens were taken by the Albatross at station 4236, vicinity of 

 Yes May. Iiehni (.'anal, and station 42?>7, vicinity of Kunter Bay, Lynn Canal. Depth, 147-M50 fathoms. 



The host is unknown. The type ol the species is in the United States National Museum. Cat 

 No. 29250. 



