144 



ccnce of gular region black, that of checks and occiput sordid white. 

 Antennae narrowly black, ferruginious below, except on scape, the first 

 article of flagellum scarcely longer than second. Mesothorax above and 

 below, except between wings above, covered with long fluffy white pu- 

 bescence. Two closely approximated angular black spots in center of an- 

 terior margin of mesothorax, a large less well defined spot low down on 

 meso2)leura, a spot between tegulae and scutellum and two very large 

 completely separated trapezoidal spots on scutellum. The tegulae are 

 testaceous, dark margined within. The metathorax with very little pubes- 

 cence and that in tufts on the upper outer angles. The pubescence on scu- 

 tellum is close and appressed, that back of scutellum erect and thin. The 

 hair bands on the abdomen resemble those in certain Melecta, — all inter- 

 rupted, quite narrowly so on the first segment where there is a sparing 

 intermixture of long erect hairs, and most widely on the third; bands on 

 first segment broad and subrectangular, without ventral extensions as 

 in the remainder; on third to sixth narrower but more or less broad- 

 ened proximally. The lateral enlargments are subrectangular, narrower 

 on second segment and reaching hind margin of the segment, broad and 

 not reaching hind margin on segment TTI and IV and occurring as 

 nearly or quite disconnected spots on V. Terminal segment deeply 

 angularly emarginate. Venter black except for a median spot of 

 appressed white pubescence on the first segment. 



Legs black, the tarsi except basal article ferruginous; fore coxae at 

 tips amd middle and hind coxae largely, covered with white appressed 

 pubescence — likewise small areas on underside of middle and hind 

 trochanters; middle and hind femora with a conspicuous fring-e of 

 short sooty plumose hairs below, with a sparing intermixture of long 

 pale simple hairs; tibiae three banded above, black below, the terminal 

 bands of pubescence white, the middle black. "Wings hyaline, with the 

 veins ferruginous the stigma paler, a smoky cloud through the marginal 

 cell, the outher margin radiately obsciired. 



Collected at Oracle, Arizona, by Osier. 



4898 Ericrocis melectoldes n. sp. 



Male. Length 12 mm. Black; antennae pieeous, narrowly ferrugin- 

 ous below. Face, except labrum, to above antennae, covered with 

 very dense silky yellowish white appressed pubescence. Mandibles 

 varying through pieeous to ferruginous at tips. Mesothorax anteriorly 

 above with white only. Anteriorly on mesonotum with two large 

 widely separated subrectangular black spots. Mesopleurae below broa- 

 dly nude, the venter together with mid and hind coxae and trochanters 

 below, covered with short appressed white pubescence. The tegulae 

 testaceous, darker within, a large black spot between tegulae and 

 scutellum, and on the latter two very large subrectangular black spots 

 which are connected beind. Metanotum with tufts of loose pale hairs 

 at outer angles. 



