no. 3613 TWO NEW CRUSTACEANS — BOWMAN AND KORNICKER 



11 



Male shell (figs. 4c, 6/, g) : In lateral view suboval, with dorsal 

 margin sloping posteriorly, gradually at first, and then more sharply, 

 forming a posterodorsal angle; greatest height anterior to middle; in 

 dorsal view greatest width anterior to middle; lateral surface smooth, 

 with hairs in row across posterior region and sparsely distributed 

 along ventral and posterior margins; incisur wider than in female, 

 with rostrum projecting farther forward; inner lamella with about 

 42 medial bristles above incisur, 12 to 17 below incisur, and about 9 

 bristles along ventral margin; radial pore canals, and distribution of 

 medial bristles on and posterior to medial ridge similar to female. 



The numbers of medial bristles on the inner lamella above and 

 below the incisur vary considerably within the species and on left 

 and right valves of the same specimen. The numbers of bristles 

 given in the description are for specimens on which they were counted, 

 2 females and 1 male. The average length of 51 adult females is 

 1.56 mm, average height 0.82 mm; the height calculated as percent 

 of length is 53 percent. The average length of 8 adult males is 1.57 

 mm, average height is 0.86 mm; the height calculated as percent of 

 length is 55 percent. Dimensions of shells of adult males and females 

 are as follows: 



USNM station 



114050 2906 



