538 CALIFORNIA ACADEMY OF SCIENCES. 



Legs with weakly colored, translucent, dorsal margins 

 on femora and tibiae ; anterior coxae with bluntly conical 

 processes. Sternal markings ill-defined but apparently 

 composed of longitudinal and transversal narrow bands 

 without median blotches. 



Abdomen elongate-elliptical, slightly turbinated, with 

 a strong hair in each posterior angle and a few short hairs 

 along the lateral margins of the segments; dorsal surface 

 with a regular row of short, sharp, spiny hairs on the 

 posterior margin of each segment; on segment i no 

 other dorsal hairs; on segment 2 an additional single 

 irregular row across the segment, and on segments 3-8 

 two additional irregular rows; last segment without rows 

 of short spiny hairs, rounded behind, with four long hairs 

 in lateral groups of two each, and posterior margin with 

 four short, fine hairs ; segment 8 has two long conspicuous 

 hairs rising one in the middle of each lateral half of the 

 posterior margin; genitalia of the usual Menopon type, 

 an unpaired, long, strong, longitudinal bar with two 

 strong, diverging prongs at posterior angle ; ventral sur- 

 face of abdomen possesses, in addition to transverse 

 rows, groups of short spiny hairs near each lateral mar- 

 gin; on the posterior margin of segment 2 there are a 

 few, four to six, very strong spines in two lateral groups; 

 color of abdomen same as that of head and legs, with 

 narrow, translucent, lateral bands, having two short, 

 rounded, inward-projecting processes in each segment; 

 in addition there is a second inner, narrow, regular, 

 lateral band parallel with the outer margin. 



Female. Body, length 2.16 mm., width .81 mm.; 

 head, length .34 mm., width .56" mm.; darker, without 

 second inner lateral band, and with the inward-projecting 

 process of the outer or true lateral band shorter, but the 

 band distinctly darker colored than rest of body, although 



