iSgg.J 



PSYCHE. 



375 



simple; pvgidial plate almostobtrapezoidla. 

 ?. . . . P/tiloxant/iiis Ashm. 



(TvpeP. beaiiis Ckll.) 

 Frontal foveae very small, represented by 

 a rounded or oval black puncture; cljpeus 

 obtrapezoidal at base; claws cleft. $. 



Perditella Cockerell. 

 (Tjpe P. larreae Ckll.) 

 8. Abdomen aeneous, cr rufous and black, 

 ornate vvitb red, yellow, or whitish maculae 

 or bands; face usually yellow, or marked 

 with yellow or w"hite; stigma well developed 

 recurrent nervures respectively interstitial 

 with the first and second transverse cubiti, 

 or both are received by the second sub- 

 marginal cell ...... 9 



Abdomen black, rufous or yellowish, neither 

 maculate nor banded; stigma either large 

 well developed, or poorly developed, sublan- 

 ceolate; both recurrent nervures received by 

 the second submarginal cell or the first is 

 interstitial with the first transverse cubi- 

 tus. ....... ID 



g. Marginal cell not short, much longer than 

 the stigma, fully twice as long, and as long 

 or longer than the first discoidal cell; sub- 

 median cell a little shorter than the median ; 

 labial palpi 4-jointed, the first joint very 

 lo'igi 7 oi' S times longer than joints 2-4 

 united, contracted at base. 



Nomadopsis Ash m ead . 

 (Type C. zoualis Cr.) 

 Marginal cell very short, shorter than the 

 stigma or no longer, and always very much 

 shorter than the first discoidal cell ; labial 

 palpi 4-jointed, the first joint very long and 

 usually somewhat thickened, fully twice as 

 long or even more than twice as long as 

 joints 2-4 united; hind tibial spurs finely 

 serrated ; claws at least in $ cleft. 



Cocketellia .Vshmead. 

 (Type P. hyalhia Cr. albipeiiiiis Cr.) 

 10. Marginal cell short not longer than the 

 stigma, usually a little shorter, the stigma 

 large, broad well developed ; head seen from 

 in front usually longer than wide; clypeus 

 somewhat produced anteriorly, truncate, the 



labrum distinct, transverse; labial palpi 4- 

 jointed, the first joint the longest but rarely 

 longer or much longer than joints 2-4 united ; 

 claws cleft ; hijid tibial spurs simple. 



Perdita Smith. 

 Marginal cell long, always much longer 

 than the stigma; stigma rather sm.ill, or 

 narrow, lanceolate; head large, seen from 

 in front usually much wider than long; 

 labial palpi 4-jointed the first joint very 

 much longer than joints 2-4 united; claws 

 cleft; hind tibial spurs finely serrated; 

 antennae short, scarcely as long as the 

 width of the head. Macroiera Smith. 



Stigma broad, oblong-oval or at least not 

 lanceolate; head normal, as seen from in 

 front rounded, not wider than long; 

 antennae longer than the width of the 

 head. 



First submarginal cell, along the cubitus, 

 not greatly longer than the second. 

 Hind tibiae and tarsi in ? with a long 

 dense pubescence ; clypeus in $ black, 

 with long hairs; eyes black; labial 

 palpi 4-jointed, the first joint very 

 long, usually longer than 2-4 united- 

 Paniirgns Latreille. 

 Hind tibiae and tarsi in $ with 

 short, rather sparse pubescence; 

 clypeus in $ usually yellow or marked 

 with yellow, hardly pubescent; legs 

 black varied with yellow ; laliial palpi 

 4-jointed, the first joint about as long 

 as joints 2-4 united. 



Painirginns Nylander = Parandrena 

 Robt. =Psettdopaimrgus Ckll. 

 First submarginal cell, along the cubitus, 

 about twice or nearly, as long as the 

 second; each submarginal cell receiving a 

 recurrent nervure; transverse median ner- 

 vure joining the median view much before 

 the origin of the basal. 



Scafteroides Gribodo. 

 II. Submarginal cells very unequal, the first 

 about thrice as long as the second, the latter 

 quadrate or nearly ; the first recurrent nerv- 

 ure is received by the first submarginal cell 



