430 University of California PuhUcations [Entomology 



Subgenus Cotyledon, new subgenus 



J*. Eyes more remote from each other than the distance between 

 the hind ocelli, these not touching the eyes; emargination of the eye 

 moderately narrow, the apex rounded ; front with a median prominence 

 above the base of the antennae ; clypeus much broader than long, con- 

 vex, deeply emarginate anteriorly ; labial palpi of 2 segments, the 

 second less than one-half the length of the first and indistinctly dis- 

 crete therefrom ; maxillary palpi a very minute, scarcely chitinized, 

 bulb bearing one heavy seta and 2 more slender ones. 



Scape globose ; pedicel about one-third its length ; segment 3 cylin- 

 drical ; segment 4 a little longer, slightly and suddenly widened before 

 its apex ; segment 5 slightly gradually Madened ; segment 6 greatly 

 widened toward its apex, nearly as wide as long, apical portion concave 

 beneath and forming part of the club ; the seventh segment about 3 

 times as wide as long; the remaining segments fused, together about 

 as long as the sixth and seventh segments ; the club formed of the 

 sixth, seventh, and remaining segments, strongly concave beneath and 

 with the shape of a partly closed hand. 



Undersurfaces of front and middle femora and tibiae concave, con- 

 torted, and tuberculate ; middle tibia and tarsus about equal in length ; 

 metatarsus as long as the remaining segments united ; the fourth seg- 

 ment much broader than long; hind tibia about three-quarters as long 

 as the tarsus ; the metatarsus about equal to the remaining segments 

 united, without an apical lobe ; the 4th segment about as broad as long. 

 Distance between r and R^ equal to one-third the distance between 

 M3+4 and Mo on the margin of the cell R4+.-,- 



Basal abdominal segments considerably constricted ; the last dorsal 

 segment without a definitely truncate apical area but with 4 acute 

 processes of which the inferior are the larger, closer together and 

 slightly closer to the superior processes than to each other ; second 

 ventral segment with two rounded tubercles ; the third with a promi- 

 nent transverse ridge replacing the ordinary process, armed with a 

 sharp median tooth directed caudad. 



The squama densely ciliate within ; sagitta short, trigonal, acute, the 

 upper margin very deeply triangularly notched ; uncus slender, de- 

 flexed, with two small barbs at base. 



5. Posterior ocelli about equidistant from the eyes and each other ; 

 eyes broadly emarginate. Humeri fitting closely around the head and 

 marked by a prominent ridge ; posterior angles of propodeum mucro- 

 nate. Middle femur seen from in front, with its inferior margin 

 sinuate, slightly inflated in the middle ; middle tibia, from an external 

 view distinctly inflated at about the middle, about three-quarters as 

 long as the tarsus ; metatarsus as long as the following segments 

 united ; fourth segment nearly as long as broad ; hind tibia nearly 

 three-quarters as long as the tarsus; metatarsus about as long as the 

 remaining segments together; the fourth segment as long as broad. 



