June, I9I3-] AlDRICH : NORTII AMERICAN SpECIES OF LiSPA. 145 



colorous with rest of abdomen ; third and fourth segments with a row of 

 marginal bristles, first and second with irregularly placed bristles along the 

 sides ; third segment with a V cut out beneath where the sternite would be. 



Femora black, robust, tibiae rather dark yellow, tarsi yellow, infuscated 

 toward the tip, with large yellowish pulvilli. Front tibia with a bristle beyond 

 the middle on the outer side, and one on the front side a little lower down; 

 front tarsi plain ; middle femora with a row of bristles on the front side that 

 extends only to the middle, and two preapical bristles on the hind side; 

 middle tibia with a bristle on the outer hind side just beyond the middle and 

 another on the outer front side a little lower down ; hind femora with the 

 usual three rows of bristles ; hind tibia .98 times the length of its tarsus, 

 with a bristle below the middle on the hind side, above this a row of two to 

 four small bristles, and below it on the outer side a small bristle. 



Wings of ordinary structure, the veins yellowish. Length 7.2 mm. ; of 

 wing S.2 mm. 



Female. — Head 1.92 times the front in width; sides of face wider and 

 more hairy ; palpi not so suddenly enlarged, but about as wide ; a faint brown 

 line in the middle of the thoracic dorsum ; a single bristle on the under and 

 outer side of the hind femur, representing the row that occurs in the (^ ; hind 

 tibia. Length 7.4 mm. ; of wing 5.8 mm. 



Fifteen specimens, of both sexes, collected at Pyramid Lake, Utah, 

 along the shore at the south end, July i6, 191 1. 



Lispa sociabilis Loew. 



Centuries, ii, 72. 



Male. — Almost like patellala, but with the following differences : head 

 2.86 times front in width ; palpi less widened, but still very large, about as 

 wide as the length of the third antennal joint, while in patellata they are fully 

 as wide as the length of both second and third ; color as in patellata, almost 

 white, glistening, and with few hairs. Front tarsi with first joint yellow, on 

 the outer side with only an insignificant point where the prolongation occurs 

 in patellata and tentaculata ; second joint yellow, sometimes blackened from 

 the middle, about three fourths as long as the first joint, the remaining joints 

 of nearly equal length, black, somewhat flattened; all knees and extreme tips 

 of tibias yellow ; middle and hind tarsi yellow on vmder side at least to tip of 

 first joint ; hind femur generally destitute of slender hairlike bristles on under 

 ' side beyond the middle, occasionally with only one ; middle tibia without 

 bristle near middle. Hind tibia 1.27 times as long as its tarsus. 



Female. — Head about 2.50 times the front in width, but somewhat 

 variable ; palpi nearly as in the (^ ; front metatarsus nearly as long as the 

 three following joints, blackish; middle tibia with one bristle near middle; 

 hind femur with one bristle below, beyond the middle (absent in one out of 

 four) ; tibiae almost entirely black. Length of (^, 6 mm. 



Seven J^'s, four 5's, Trenton, Lucaston and lona, N. J. ; Mont- 



