Fig. 26. — Daihinia phrixocnemoides. Female type. 



686 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49 



Length, males and females, pronotum, 6-7 mm.; hind femora, 12-15 

 mm.; ovipositor, 10-11 mm. 



The males have remarkably lieavy posterior femora, which are as 

 broad as or broader than the pronotal length, tapering but very 

 moderately at either end and armed beneath on the apical half of 

 the outer carina with three or four heavy spines, the inner carina 

 with several small tubercles. 



DAIHINIA PHRIXOCNEMOIDES Caudell. 



This species, which was described from a single female specimen from 

 New Mexico, has been sent in to the United States National Museum 



from Pony, Texas, by 

 Mr. Pryor Mapes, with 

 the statement that they 

 occm- in that locahty in 

 injurious numbers, the 

 damage done being the 

 cutting off of plants at 

 night. Specimens of 

 both sexes were received 

 in February and April, 

 1914, but unfortunately all were immature. The males, so far as 

 shown by this material, do not differ materially from the females. 

 Figure 26 shows the holotype. 



Genus UDEOPSYLLA Scudder. 



Udeopsylla Scudder, Can. Nat. and Geol., vol. 7, 1862, p. 284. 

 Marsa Walker, Cat. Derm. Salt. Brit. Mus., vol. 2, 1869, p. 253. 



The presence of a dorsal spine about or just beyond the middle of 

 the anterior tibiae on the inner side will serve to readily separate this 

 genus from aUied forms in which the second segment of the liind tarsi 

 is no longer than deep. Rarely one or both anterior tibiae will have 

 two dorsal spines instead of a single one, and I have seen one specimen, 

 a female in the Hebard collection, with two on one tibiae and thi'ee 

 on the other. 



A study of the unique male type of Marsa arcuata Walker in the 

 British Museum, made by the writer in 1913, showed without doubt 

 that it is a synonym of the type species of the genus Udeops7jlla, the 

 Phalangopsis (Daihinia) rohusta of Haldeman. Thus the genus 

 Marsa Walker falls mto the synonymy under Udeopsylla Scudder. 



The posterior femora of the male Udeopsylla have the same heavy 

 broad shape as described mider Daihinia, but lack the heavy spines 

 on the lower outer carina as present in that genus, here this carina 

 being armed only with a number of sharp triangular serrations, the 

 inner margin with longer ones, forming short stout spines. 



There appears to be but a single species referable to Udeopsylla. 

 This is the U. rohusta of Haldeman, the type of the genus. It is a 

 large, robust insect exhibiting unusual variation in both size and color. 



