226 robekt h. woloott: 



written, confusion occurred in that description and so it is in 

 certain particulars wrong. Unfortunately too, and much to the 

 writer's regret, the error was overlooked in the reading of 

 proof and only discovered after the separates were distributed. 



8. ATAX FOSSULATUS KOENIKE. 



Atax fossulatus, Koenike, 95b; 221, PL III, f. 68-70: Wolcott, 98; 283. 



A. fossulatus is one of the larger species of the genus, the males 

 ranging in length from 1.1 mm. to 1:3 mm., the females from 1.4 mm. to 

 1.6 mm. The body is oval, smoothly rounded anteriorly and posteriorly 

 and with the greatest breadth about opposite the posterior margin of the 

 last epimera: dorsally it is considerably arched, somewhat higher pos- 

 ted ad. 



The eyes are moderately large and quite close together, in one male 

 specimen 1.08 mm. long, the longest diameter of the eye amounting to 

 0.046 mm., and the distance between the inner borders of the two to 0.224 

 mm., while the extreme width of the body is 0.718 mm. 



Maxillary shield broad, the sides anteriorly nearly parallel, the latero- 

 posterior angles moderate and the shield contracted posteriorly to a rather 

 broad and short ancoral process the width of which is two-sevenths the 

 greatest width of the shield. 



Mandible with basal segment roughly rectangular, broadened pos- 

 teriorly, the dorsal and posterior margins forming, by the rounding off of 

 the posterior dorsal angle, a sweeping curve. Total length in the speci- 

 men referred to above, 0.28 mm. and greatest width somewhat more than 

 half the length. Distal joint moderate in size and with the claw compar- 

 atively short and straight, slightly hooked at the tip; the area of cross- 

 striae on the side of the base of the claw comparatively restricted. 



Palpi rather large and moderately heavy, in the specimen referred 

 to previously the length amounting to 0.607 mm., while the maximum 

 dorso-ventral diameter of segment 2 is 0.184 mm. Segment 2 is convex 

 on both dorsal and ventral margins, but the dorsal curature is much the 

 greater; it is but little longer than thick, and bears on both outer and 

 inner surfaces two spines, those of the outer side close together midway 

 between the two ends and near the dorsal margin, those on the inner 

 side also close together, slightly farther from the base and more removed 

 from the dorsal margin. 3, about two-thirds as thick as 2, one-half as 

 long, and with a spine at the proximal margin on the inner side and 

 another toward the distal margin on the outer side. 4, slightly longer 

 than 2, slightly less than one-half as thick; the dorsal and ventral mar- 

 gins nearly parallel to the base of the paired papillae on the ventral sur- 

 face, beyond which the thickness of the segment rapidly diminishes. All 

 segments showing a gradual tapering when viewed from above. The 

 outer of the paired papillae is very small, the inner more prominent and 

 the spur at the distal margin moderately so. 5, nearly straight above, 

 concave below, tapering to a blunt tip, which bears three small blunt 

 claws; on the ventral margin, midway between base and tip, a small hair. 



