TEXAN HYMENOPTERA. 209 



Pepsis formosa. 



Pompilus formosus, Say, Amer. Ent. pi. 42. 



Twelve % 9 specimens. (Belfrage; Boll; Heiligbrodt.) This is 

 probably identical with csendea, Linn. In size it varies from .65 — 

 1.50 inch, and is distinguished at once from marginata by the clear 

 apical margin of the wings. 



Pepsis marginata. 



Pepsis marginata, Beauv. Ins. p. 94, pi. 2, figs. 2, 3. 



Ten % 9 .specimens. (Belfrage; Boll; Heiligbrodt.) One 9 

 specimen, which may be named var. sericata, is covered with a dense 

 silvery-sericeous pile, as in a specimen of Pompilus philadefphicus, 

 mentioned above. 



Pepsis (lubilata. 



Pepsis dubitata. Cress. Trans. Am. Ent. Son. i., p. 144. 



Six % 9 specimens. (Belfrage ; Boll ; Heiligbrodt.) 



SPHEGID.E. 



Ammopliila grossa, n. sp. 



9 • — Large and very robust, black, subopaque, sparsely clothed with % 

 long black pubescence : head broader than thorax, face broad, densely punc- 

 tured, clypeus large, rugose laterally, apex with a large deep fovea, apical 

 margin dentate, lateral margin broad, slightly reflexed ; mandibles fulvo-tes- 

 taceous above, black at base and apex ; thorax densely punctured ; metathorax 

 opaque, transversely striated, sides obliquely striated, apex abrupt, with a deep 

 fovea above,- tegulte dull testaceous on posterior margin ; wings fusco-hyaline; 

 legs shining; abdomen robust, shining, yellow-ferruginous, petiole short, 

 black, not extending beyond posterior trochanters, second segment black at 

 base and narrowly on disk half way to apex, a transverse stain on apex of 

 fourth segment and the following segments, except base of fifth, black. Length 

 .95 inch. 



One specimen. (Coll. L. Heiligbrodt.) A very robust species, 

 having much the general appearance of a Splicx, resembling some- 

 what L rujiventris, described below. 



Ammophila Gr.yplms. 



Ammop/u/a Gryphus, Smith, Brit. Mus. Cat. iv., p. 222. 

 Eight £ 9 specimens. (Belfrage; Boll; Heiligbrodt.) 



Ammophila inepta. n. sp. 



9- — Black, with sparse pale pubescence; clypeus with large sparse punc- 

 tures; prothorax with a small notch on disk above; mesothorax sparsely 

 punctured, more thickly so laterally, disk with deeply impressed longitudinal 

 groove, and a shallow depression on each side; scutellum with coarse longi- 

 tudinal stria;; postscute.l I um rugose; metathorax with pale pubescence, coarse- 

 ly punctured laterally and apieally, the dorsal space ilattened, rugose at base, 

 shining and transversely, somewhat obliquely, striated toward apex, extreme 



TEANS. A5IEH. ENT. SOC. IV. (27) NOVEJIBEK, 1872. 



