8 Harry ae) cott Smith 
this species. 
Sphex vulgaris (Cresson), 
1865. Ammophila vulgaris Cresson, Proceedings of the Entomolozicall ; 
Society of Philadelphia, iv, p. 458. 
1903. Ammophila vulgaris Melander, Psyche, x, p. 160. 
Our most common species, having been taken in great numbers 
at Glen and Warbonnet canyon in Sioux county, Holt county, ; 
Cedar Bluffs, South Bend, and Lincoln, from May to August. 
Sphex nigricans (Dahlbom). 
1843. Ammophila nigricans Dahlbom, Hymenoptera Europaea, i, p. 14. 
1903. Ammophila nigricans Melander, Psyche, x, p. 161. 
Plentiful in the east portion of the state, but not taken west of 
Lincoln. Lincoln, Cedar Bluffs, West Point, Ashland, and 
Weeping Water, June to September. Distinguished by the black 3 
wings. 
Sphex extremitatus (Cresson). 
1865. Ammophila extremitata Cresson, Proceedings of the Entomo- 
logical Society of Philadelphia, iv, p. 457. 
1903. Ammophila extremitata Melander, Psyche, x, p. 161. 
Next to vulgaris the most abundant species, but its distribu- 
tion is more restricted than the above mentioned, having been 
taken only from Lincoln and Cedar Bluffs east. Flies from May 
to September. The yellow wings are very characteristic and . 
readily separate this species from the rest. 
Genus Psammophila Dahlbom 
SYNOPSIS OF THE SPECIES 
Body wholly black; pubescence in part white, face silvery (male) or 
pubescence black: (female): 2 savs Go. 2: coe da. ce tems mee eee luctuosa 
Abdomen with basal segments ferruginous...............ceeeceevees 1 
1. Larger species and very robust; petiole of abdomen short, not ex- 
tending beyond hind trochanters; wings darker........ grossa 
1. Smaller and more slender; petiole much longer, extending beyond 
hind trochanters; wings paler.................. violaceipennis 
Psammophila luctuosa (F. Smith). 
1856. Ammophila luctuosa F. Smith, Catalogue of Hymenoptera in 
the British Museum, iv, p. 224. 
1903. Psammophila luctuosa Melander, Psyche, x, p. 158. 
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