1916.] NATURAL SCIENCES OF PHILADELPHIA. 275 



We have no authentic material of this striking species and our 



determination rests on the agreement of our very extensive series 

 with the original description. We have, in addition to the specimens 

 here listed, larger series from the northeastern States, which We 

 will treat in detail at a later date. 



This species appears to be typical of a distinctive group of the 

 genus, characterized in-the male sex by the broad linguiform produced 

 supra-anal plate. The form of the subgenital plate, which bears a 

 cordiform callose pattern, is quite peculiar, while the general type 

 of the caudal femora is different from that of any species of the 

 genus found in the eastern States with which we are acquainted. 

 There is a slight development of the fastigial ridge, less decided, 

 however, than in the uhleri group. The internal valves of the 

 ovipositor bear but four teeth, which are strongly developed, instead 

 of the more usual five or six teeth. The distal extremity of the 

 external ovipositor valves is obliquely truncate, with the spiniform 

 dorso-distal point very well developed and directed at an angle of 

 about fifty degrees to the longitudinal axis of the ovipositor. 



There is a great amount of individual variation in size and robust- 

 ness of the whole body, and in the male this variational feature of 

 the caudal femora is very pronounced, and rather disproportionately 

 so. The number of teeth on the ventro-external margin of the 

 caudal femora and the character of the same are quite variable in the 

 male sex.. At a later date we intend to give additional information 

 on these points from the other material we now have. 



In the southern States the species appears to be one of the Piedmont 

 region, the lowest elevation from which we have definite records 

 being Raleigh and Southern Pines (Sherman and Brimley), North 

 Carolina, and Atlanta, Georgia. 



Ceuthophilus neglectus Scudder. 



Cabin John Run, Maryland, IX, 1911, Alexandria County, Virginia, VI, 1910, 



(\V. T. Davis; trapped in molasses (W. T. Davis; trapped in molasses 



jar), 34 <?, 38 9, [Davis Cln.]. jar), 51 d>, 73 9, 9 juv. ef , [Davis 



District of Columbia, VI, 1910, (W. T. Cln.]. 



Davis; trapped in molasses jar), Orange, Ya., VII, 21, 1913, (R. & H.), 



22 & , 33 9, [Davis Cln.]. 3 juv. <?. 



We have before us three male and three female paratypes of 

 neglectus, one of the females of which, as we have already shown, 

 belongs to spinosus. We have also male and female paratypes of 

 terrestris, these being the pair recorded by Scudder from Chateaugay 

 Lake, Adirondack Mountains, New York. As stated by Walker, 129 



™Can. Ent., XXXVII, p. 118, (1905). 



