^o-S-l PATTON ON ACULEATE HYMENOPTERA. 353 



middle, forwardly directed, and giving to the claws the appearance of 

 being cleft. Anterior tarsi armed with eight stout spines, each spine as 

 long as the second joint of the tarsus, the spines arranged one at the tip 

 of each of the four basal jo-^'nts, two additional ones on the first joint, 

 and one each on the middle of the second and third joints. Marginal 

 cell ovate-lanceolate; third submarginal cell a little larger than the 

 second, narrowed one-half towards the marginal; submedial cell of poste- 

 rior wings extending well beyond the medial cell on the extemo-medial 

 ner^Tire. Abdomen with obscure spots on base of the second segment 

 and broad bands at the base of segments three to five, deeply emargl- 

 nate posteriorly, dull yellow. Extreme base and the apical margin of 

 the first segment black. 



A second specimen, length 18"", is much paler in color and the wings 

 are yellowish-fuscous with darker borders and longitudinal stripe ; the 

 clypeal suture only is black, there is no black line between the ocelli 

 and antennae, and there are yellow spots on the prothorax anteriorly 

 and on the scutellum ; the coxae and thorax, excepting a spot on the 

 pectus and some of the sutures, are without black markings, and the 

 yellow markings on the abdomen are more distinct. 



This species agrees in the structure of head and tarsi and in the vena- 

 tion of wings with P. algidtis Smith and may be the Western form of 

 that species, but the wings are much i^aler and the coloring throughout 

 is much paler. In algidus the third submarginal cell is no longer than 

 the second in the specimens comi^ared. 



SPHECID^. 



11. AM3I0PHILA PROCEEA Dahlb., 9 „ 



Syn. AmmopMla gryplius Smith. 



12. Ammophila intercepta Lepel., 9 . 



Syn. AmmopMla^rocera Lepel. (nee Dalilb.)- 



13. AiMMOPHiLA a:beiiti Hald., Stans. Salt Lake Ex. p. 368 (1852). 

 Eour female specimens agreeing with Haldeman's description recover 



this species to science. Haldeman's single specimen had neither head 

 nor anterior wings. The wings are yellowish hyahne with rufo-testa- 

 ceous nervures. The head is black, with thin white pubescence on 

 cheeks and mandibles; the face about antennae and the cheeks silvery; 

 the margin of clypeus and middle of mandibles ferniginous. The 

 punctures on the head are very slight, those on the clypeus larger; the 

 clypeus arcuately produced, subtruncate anteriorly; mandibles Avith 

 two teeth on the inner border, the proximal tooth small (mandi- 

 bles similar to those of A. molaceipennis, but stouter) ; labrum elongate, 

 the length to the breadth as three to two, the anterior border angular. 

 Prothorax with a notch above; mesothorax with a median groove, 

 an impressed line above the tegulae anteriorly, a longitudinal depres- 

 sion on each side posteriorly, mesothorax finely punctured, the scutel- 



