142 PROCEEDINGS OF THE NATIONAL MUSEUM 



ITctid narrow as compared with following segments, one-half as long 

 as wide widest through the eyes and constricted considerably behind 

 them, neck-like and sunken slightly in the prothorax; front slightly 

 depressed at the insertion of the antenna?. Eyes small, rounded, 

 strongly protruding, occupying together only one-half the width of 

 the head, black, coarsely granulated; margins light yellow; ocelli pres- 

 ent, very small, well separated, not prominent; anterior one indistinct. 

 Color of head brown; surface bearing scattered small curved spines. 

 Mouth cone reaching to about the posterior edge of prosternum ; max- 

 illa rv palpi three segmented. Antennte very nearly as long as head 

 and thorax together, .slender, eight-segmented; relative lengths of seg- 

 ments: 



1 ^ _3_ ^ _5_ _6_ _7^ 8^ 

 578 9.9 16.4 14.5 12.2 14.3 3.2 4. 



Basal two segments thickest; spines slender and inconspicuous. J 

 Segments one, two, and three light j^ellow; third shaded with brown ,' 

 toward apex; remainder dark brown except four, which is yellowish 

 at base and style is somewhat lighter brown. 



Prothorax nearly twice as long as head and one and one-half times as 

 broad as long; widest in middle, tapering abruptly to the head and 

 less abruptly to posterior angles; surface marked with deep, transverse, 

 reticulating wrinkles appearing like stria? in dorsal view; each anterior 

 angle bears a pair of short, divergently curved spines; one short, ante- 

 riorly curved spine at each hind angle; color dark brown. Meso and 

 metathorax together scarcely as long as prothorax, onh^ slightly wider 

 than prothorax; yellowish brown, except notal plates dark ))rown; 

 sides of metathorax not converging posteriorly; metanotum uuich 

 wider than long. Wings reduced, the pads reaching only to the first 

 a])dominal segment. Fore and middle legs of approximately same 

 length; fore pair thicker; hind pair longest and quite slender; all 

 femora shaded with brown in middle but lighter at extremities: tibiiB 

 yellowish brown, more yellow at basal attenuations, fore pair lightest; 

 tarsi uniformly yellowish, slender, and tapering evenly from their 

 bases to tips. Surface of all femora and tibia? thickly covered with 

 transverse ridges; spines upon hind tibici? especially long and slender. 



Abdomen very large, acutely ovoid, about one-half as broad as long, 

 uniformly thickly covered with minute spines which appear most 

 clearly as a fine fringe at posterior edge of each segment; a transverse 

 dorsal row of about twelve quite uniformly long, brownish spines 

 regularly spaced across the middle of segments two to six, and six 

 similar spines stand in as many small, dark depressions along the 

 posterior edge of the sternal plates of these segments. First three 

 abdominal segments light brown; four, five, and six abruptly pale 

 gray, or yellowish gray, tinged with brown in middle of dorsum, 

 most broadly on sixth segment; last four segments again abruptly 

 dark brown. A narrow, dark-brown, transverse, chitinous thickening 



