The Sphegoidea of Nebraska 7 
tire state, specimens having been taken at Glen, West Point, Ash- 
land, Lincoln, and Weeping Water, from June to October. It is 
the largest species of the genus found in the United States, and 
may be distinguished from the other members found in Nebraska 
by the transversely striate pro- and mesonotum in conjunction 
with the black legs and thorax. 
'Sphex cressoni, new name. 
1865. Ammophila collaris Cresson, Proceedings of the Entomological 
Society of Philadelphia, iv, p. 456. 
1903. Ammophila collaris Melander, Psyche, x, p. 159. 
1908. Sphex cressoni H. S. Smith, new name for Sphewx collaris 
(Cresson) (not of Linnaeus). 
A single male specimen of this rare species was captured at 
Glen, expedition of 1906, during the month of August. 
Sphex ferruginosus (Cresson). 
1865. Ammophila ferruginosa Cresson, Proceedings of the Entomo- 
logical Society of Philadelphia, iv, p. 455. 
1903. Ammophila ferruginosa Melander, Psyche, x, p. 159. 
This rare and beautiful species is also represented in the col- 
lection of the University of Nebraska by a single specimen, a 
female, taken at the same time and place as the above. Both are 
readily recognized by the ferruginous legs and thorax. 
Sphex breviceps (F. Smith). 
1856. Ammophila breviceps F. Smith, Catalogue of Hymenoptera tn 
the British Museum, iv, p. 221. 
1865. Ammophila varipes Cresson, Proceedings of the Entomological 
Society of Philadelphia, iv, p. 457. 
1903. Ammophila breviceps Melander, Psyche, x, p. 160. 
Fairly abundant in the western portion of the state, having 
been found in both Sioux and Dundy counties. Rarely east as 
far as Ashland. 
Sphex abbreviatus (Fabricius). 
1804. Pelopoeus abbreviatus Fabricius, Systema Piezatorum, p. 204. 
1856. Ammophila moneta F. Smith, Catalogue of Hymenoptera in 
British Museum, iv, p. 219. 
1903. Ammophila abbreviata Melander, Psyche, x, p. 160. 
Two specimens of this beautiful wasp, a male and a female, 
were taken at Lincoln, during July. The black body with the 
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