26 CALIFORNIA ACADEMY OF SCIENCES, 



anterior margins bare, convex. Color brownish, paler 

 in middle, stronger laterally and posteriorly, with 

 uneven, blackish latero-anterior borders, and latero- 

 posterior borders nearly uncolored. Legs brown with 

 paler regions at extremities of segments and blackish 

 dorsal margins, sternal markings consisting of distinct 

 intercoxal lines, those between pro- and mesocoxse 

 with angulated spurs nearly touching; between the 

 metacoxal lines a median blotch. 



Abdomen short and broad, in shape an ellipse, seg- 

 ment 4 being the widest; ground color very pale brown- 

 ish; segments 1-7 with narrow black lateral bands, the 

 segmental parts distinct and passing the suture; quad- 

 rangular brown lateral blotches darkest internally on 

 segments 1-7; segment 8 wholly colored; segment 9 

 uncolored and weakly emarginate behind; ventral sur- 

 face of segments with a brown median blotch, the 

 • blotches of segments 6—7 fusing. 



Lipeurus. 



Lipeurus confidens n. sp. (Plate III, fig. 1). 



Four females from a Black-footed Albatross, Diomedea 

 nigripes (North Pacific Ocean). A species which in 

 outline of body, color and markings is very like Pia- 

 get's species ty^icolor (Les Pediculines, p. 363, pi. xxx, 

 fig. 4) from Diomedea fuliginosa (collection in the Mu- 

 seum of Leyden), but which is one and one-third times 

 as large, without circumfasciate antennal bands, with- 

 out occipital bands, with metathorax not without hairs 

 as described for tricolor but with longish hairs in the 

 posterior angles, without median abdominal blotches, 

 and with last segment of female not acutely but bluntly 

 two-pointed. 



