22 PROCEEDINGS OF THE NATIONAL MUSEUM vol.71 



fAmmophila piceiventris Cameron, Biol. Centr.-Amer., Hym., vol. 2, p. 22, 



1888. Female. 

 Psammophila luctuosa (Smith) Melander and Brues, Biol. Bull., vol. 3, p. 40, 



1902. Female. 

 Ammophila (Psammophila) luctuosa (Smith) Melander, Psyche, vol. 10, p. 158, 



162, 1903. Female. 

 Psammophila luctuosa (Smith) H. S. Smith, Univ. Neb. Biol. Stud., vol. 8, p. 330, 



1908. Female. 

 Sphex (Psammophila) luctuosa (Smith) Rohwer, Bull. 22, Conn. Geol. & Nat. 



Hist. Surv., p. 681., 1916 (part). 

 Psammophila hictuosa (Smith) Rohwer, Proc. U. S. Nat. Mus., vol. 53, p. 241, 



1917. 

 Psammophila luctuosa (Smith) Mickel, Univ. Neb. Studies, vol., 17, p. 87, 



1917. Female. 

 Psammophila luctuosa (Smith) Carter, Can. Ent., vol. 57, p. 132, 1925 



Female, not males. 



Jet black, rarely tinged either uniformly or irregularly with brown 

 or piceous; shining; hairs and spines black; claws tinged with ferru- 

 ginous; wings quite fuliginous, with violet reflection; very variable 

 in size. 



Female. — Head: Quite broad; clypeus swollen centrally; its front 

 margin somewhat reflexed except in the middle; rather rounded in 

 outhne; its surface somewhat coarsely, closely punctured and bearing 

 long, erect hairs; frons similarly but more closely punctured, as are 

 vertex and cheeks; scape, pedicel and first filament segment of the 

 antennae rather shining, the first often faintly brownish below; the 

 remainder dull; mandible sometimes slightly piceous or chestnut 

 near the middle. 



Thorax : pronotum rather high behind, evenly rounded from side 

 to side there, with no median depression or groove; more finely 

 punctured than the head and well clothed with hairs; rugose in front 

 of the pro thoracic lobe which is partly smooth and shining; meso- 

 notum quite closely punctured; with a median, longitudinal, depressed 

 line on its anterior half ; scuteilum rather flatly rounded; punctured, 

 and with traces of rugosities behind; postscutellum dull, finely punc- 

 tured; propodeal disk rather finely, transverse rugose, closely punc- 

 tured between the ridges except near its hinder end where the ridges 

 are finer and closer together; end and sides rugose, with rows of 

 punctures between, the rugosities on the sides running rather forward 

 as well as downward; this condition continues forward over the 

 metapleuron onto the mesopleuron, becoming finally a punctured 

 surface only. 



Abdomen: Petiole short, straight, hardly longer than hind coxa; 

 abdomen unusually stout, generally very finely sericeous above (fresh 

 specimens); with a few tiny punctures near the hinder margins of 

 the dorsal plates; similar below, but with more punctures; first dorsal 



