20 PROCEEDINGS OF THE NATIONAL MUSEUM vol.71 



This beautiful species, easily distinguished by its bright ferrugi- 

 nous legs, appears to be rare, the lot in Philadelphia having evidently 

 been taken at one time at some place in "So. Cal.," and the only 

 other specimen being the holotype from Tucson. It should be care- 

 fully searched for by collectors in those and neighboring regions. 



PODALONIA SONORENSIS (Cameron) 



Ammophila sonorensis Cameron Biol. Centr.-Amer., Hym., vol. 2, p. 21, 1888. 



Female and male. 

 Ammophila {Psammophila) sonorensis (Cameron) Melander, Psyche, vol. 10, 



pp. 158, 162, 1903. Female. 



Black, except second and parts of first and third dorsal abdominal 

 plates, and more or less of the corresponding ventral ones. Hairs 

 long, black, sometimes with a bluish tinge. Wings quite uniformly 

 fuliginous, the hinder pair less so to beyond the veins, and with a 

 violet reflection. A small species. 



Female. — Head: Clypeus broad, only a little more than half as high 

 as wide; its middle swollen; its anterior margin flat and somewhat 

 reflexed laterally and extending downward a short distance, then 

 curving to run transversely to a small tooth, then rather transverse 

 or broadly, weakly emarginate at the middle, this central third between 

 the teeth much less reflexed than the lateral third; surface quite 

 closely and coarsely punctured, bearing long hairs; frons similarly 

 punctured; median impressed line from antennae to anterior ocellus 

 faint; antennae; scape and pedicel shining, black; filament somewhat 

 sericeous, giving a dull olive tinge to these segments; first filament 

 segment not quite twice as long as the second; mandible shining 

 black, with a shade of dark ferruginous near the middle. 



Thorax: Collar of pronotum with no perceptible median longitudi- 

 nal groove above; sides obliquely rugose in front of prothoracic lobe, 

 which is nearly smooth and shining; pronotal surface rather sparsely 

 punctured; mesonotum punctured, perhaps rather more coarsely and 

 closely than pronotum, its anterior half with a median impressed line, 

 double, with a slight ridge between, in front; scutellum rather flat, 

 with a few punctures in front and slightly rugose behind; post-scu- 

 tellum shining centrally, its sides closely punctured ; propodeal disk 

 closely punctured, with more or less of irregular transverse rugosities, 

 most definite and clearest at sides behind the spiracle and at the tip; 

 end of propodeum with a distinct impressed line from tip of disk to 

 petiolar articulation; its surface closely, coarsely punctured; its sides 

 similar except for slight ridges between the punctures; metapleuron 

 similar, except that the ridges may be more evident and tend to run 

 more forward as well as downward; mesopleuron closely punctured, 

 sometimes with traces of rugosities. 



Abdomen : Petiole as long as, or slightly longer than, the hind coxa, 

 its enlarged part beneath the first dorsal plate black with a ferrugi- 



