374 



PSYCHE. 



[June .899. 



Abdomen usually rather long; second 

 joint of hind tarsi normal, inserted in the 

 middle of the first ....;; 

 Abdomen subglobose, black, shining, with 

 white fasciae at apex; second joint of liind 

 tarsi angulate beneath, not inserted in the 

 middle of the first; clypeus in $ jellow, 

 the hind femora incrassated; antennae in 

 both sexes filiform, longer than the head ; 

 tongue short. . . Macropts Panzer. 



2. Body, and more particularly the thorax, 

 distinctly pubescent, the abdomen with 



white fasciae 3 



Body sparsely pilose, the abdomen always 

 glabrous, shining, not fasciate, although the 

 anal segment is slightly ciliate at apex. 



Transverse median nervure interstitial, or 

 very nearly ; antennae in $ longer than 

 the thorax, the joints of flagellum nodose 

 beneath, appearing crenulate; hind tibiae 

 with knee plate present in both sexes. 



Halicioides Nylander. 

 Transverse median nervure not interstitial, 

 joining the median vein before the basal 

 nervure ; antennae not longer than the 

 thorax, the flagellum simple ; maxillary 

 palpi 6-jointed, the joints subequal ; labial 

 palpi 4-jointed, the first joint the longest, 

 about as long as 2-3 united, the third 

 longer than 2-4. Dufourea Lepeletier. 



(= Hemihalictus Ckll. 



3. Submedian cell usually shorter than the 

 median or never longer, the transverse 

 median nervure joining the median vein 

 before the origin of the basal nervure, or 

 interstitial with it . . . 4 

 Submedian cell a little longer than the 

 median, the transverse median nervure join- 

 ing median vein beyond the origin of the 

 basal nervure. 



Thorax above with fulvous or ferruginous 



hairs; maxillary palpi 6-jointed; labial 



palpi-4 jointed. . Biareolina Dufour. 



(= Callandrena Ckll.) 



4. Thorax above usually with whitish or 

 griseous pubescence, very rarely with a slight 

 ochraceous tinge. 



Labial palpi deformed, the basal joint long 

 and quite different from the last; face in 5 

 with blackish hairs; antennae in $ longer 

 than the thorax, tlie apical joints attenu- 

 ated from the middle. Rhophitcs Spinola. 

 Labial palpi normal, all the joints being 

 similar and nearly equal; face in $ with 

 white hairs; antennae in $ as long as the 

 thorax, the last joint acuminate at apex 

 only . . Rhophitoides Schenck. 



(= Hesperaspis Ckll. 



5. Marginal cell at apex more or less acumi- 

 nate or narrowly rounded, not or rarely 

 truncate, although sometimes appendiculate ; 

 mandibles dentate . . . . 11 

 Marginal cell at apex truncate ; mandibles at 

 apex acute or narrowlv rounded, not dentate. 



Front wings with two recurrent ner- 

 vures ....... 6 



Front wings with only one recurrent 

 nervure, the second obliterated (see below 

 for characters of mouth parts) 



Cockerellia Ashmead (pars). 



6. First submarginal cell much longer than 

 the second ; maxillary palpi 5-jointed . 7 

 First submarginal cell equal to or not much 

 longer than the second. 



Maxillary palpi 4 jointed; abdomen black, 

 smooth, shining, bare above, with the sides 

 and fifth segment fimbriate with white 

 hairs; labial palpi 4-jointed, the first joint 

 almost as long as joints 2-4 united. 



Scrapter Lepel. 

 (Type 5. brullei l^e'peX.) 

 Maxillary palpi 6-jointed ; abdomen bare, 

 with white bands; face and clypeus white 

 or with a white spot ; second submarginal 

 cell receiving both recurrent nervures; 

 submedian cell considerably shorter than 

 the median . Camptopoeiim Spinola. 

 (Type C.frontale Spinola.) 



7. Species not almost entirely yellow . 8 

 Species yellow or almost entirely yellow; 

 labial palpi very long, 4-jointed, the first 

 joint fully twice as long as joints 2-4 united. 



Frontal foveae very distinct, long linear, 

 black ; cljpeus semicircular at base ; claws 



