720 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxm. 



mesothorax, 0.31 mm. to 0.36 mm.; greatest width of abdomen, 0.38 

 mm. to 0.41 mm. Color of head and thorax rather light brown, 

 abdomen usually very dark brown, in some specimens almost black, at 

 tip much lighter. Entire body, together with the legs, showing retic- 

 ulating chitinous thickenings over a good share of its surface. These 

 are heaviest on the head, the sides of the pterothorax, the sides of the 

 dorsum of the abdomen, and on the femora. Head fully one and one- 

 half times as wide as long, outline very irregular and rough ; cheeks 

 rather bulging behind the eyes, slightly notched a little behind the 

 middle. Eyes protruding somewhat, the two together occupying 

 nearly one-half the width of the head. Ocelli large and yellow in 

 color, the posterior pair widely separated from the borders of the 

 eyes; all margined inwardly by dark reddish crescentric pigmenta- 

 tion. Dorsal surface of head with a rather strong conspicuous spine 

 in front of each posterior ocellus ; there are three other less conspic- 

 uous spines on each side of the dorsal surface behind the eyes, and 

 the extreme sides of the head bear still others. Dorsal surface of head 

 strongly reticulated except toward the posterior margin. Frons not 

 reticulated; bearing a considerable number of rather conspicuous 

 spines ; in front there is a single spine on each side not far from the 

 base of the antenna ; on each side, almost straight behind these, there 

 is a single similar one not quite back to the middle of the eye ; behind 

 these, on each side close to the margin of the eye, there are two similar 

 spines; several others like these are present toward the posterior mar- 

 gin of the frons. Mouth cone not reticulated, pointed, but with 

 broadly rounded labium, reaching to the anterior border of the me- 

 sosternum. Maxillary palpi two segmented, the second segment 

 nearly twice as long as the first. Antenna? about two and one-fifth 

 times as long as the head, their bases separated by about twice the 

 thickness of the basal segment. Kelative lengths of segments as 

 follows : 



J^ J ^ ^ ^ 3_ 1_ 8^ 



5.7 11 14 17.8 10.8 7.3 3.3 7.5 



Segment one short (-ylindrical ; two imich the thickest, reticulated 

 and constricted at the base; three and four modioliform; five nar- 

 row at base but broad at distal end where it is quite squarely cut off ; 

 six abrujitly constricted at base, narrowest at distal end; seven con- 

 siderably thicker at base than at apex; eight slender and tapering 

 gradually to apex, where it bears a single very long slender bristle. 

 Segments one aud two brown; three light translucent, slightly tinged 

 with grayish brown on the distal half ; four light translucent, slightly 

 tinged with grayish brown about the middle ; basal half of five light 

 translucent, shading into brown on distal half; six brown; seven 

 and eight light grayish brown. 



