BIOLOGICAL PAPERS. 227 



Plagiostira gracila, n. sp. 



Type: Female. Bill Williams Fork, Mohave-Yuma counties, Ariz.; August, 

 F. H. Snow. Apparently allied to P. albofasciata Scudder and Cockerell, 

 but differing in the smaller size, the slenderer posterior femora and broader 

 and weaker longitudinal bars on the pronotum and abdomen. 

 Size medium ; form slender and elongate. Head with the occiput rather flat, 

 slightly arched transversely; fastigium broader than the first antennal 

 joint, apically decurved and touching the frontal process, slightly sulcata 

 in the basal portion; eyes rather large and moderately prominent, subglo- 

 bose, truncate anteriorly ; antenna? equal to the body and ovipositor in 

 length. Pronotum longitudinal, transversely arched ; anterior margin sub- 

 truncate, posterior margin very broadly and shallowly emarginate; lateral 

 lobes almost twice as long as high, posterior half of the margin diagonally 

 emarginate. Abdomen somewhat compressed; ovipositor almost equal to 

 the body in length, rather broad, slightly arcuate, apex acute; subgenital 

 plate slightly longer than broad, the apical margin with a median V-shaped 

 emargination. Prosternum unarmed. Limbs all slender. Anterior femora 

 slightly shorter than the head and pronotum, unarmed except for a pair of 

 genicular spines; tibiif slightly longer than the femora, armed on the su- 

 perior anterior margin with two or three spines, inferior margins regularly 

 armed. Median femora slightly longer than the anterior pair and similarly 

 armed; tibiae with four spines on the superior anterior and two on the su- 

 perior posterior margins, inferior margins regularly armed. Posterior 

 femora very slender and elongate, almost equal to the body in length, 

 moderately bullate basally, tapering gradually to the slender distal half 

 which is subequal, inferior internal margin with three to five small median 

 opines; tibia? compressed quadrate in section, slightly longer than the fem- 

 ora, regularly armed above except at the base, beneath irregularly armed 

 with six or seven pairs and a few scattered spines; metatarsi about equal 

 to the third and fourth tarsal joints united. 



General color, cinnamon, with a pair of rather broad, subparallel streaks of 

 ecru drab extending from the upper margin of the eyes to the apex of the 

 abdomen, lateral margins of the pronotum broadly margined with the same 

 tint, face washed with greenish, eyes walnut brown, flanked posteriorly on 

 the head by a brownish postocular bar; anterior and median femora liver 

 brown, tibia? clear green; posterior femora hoary, suffused apically with 

 clear green, which latter is the color of the tibia? and tarsi. 



Measurements: Length of body, 26 mm.; length of pronotum, 6.1 mm.; 

 greatest dorsal width of pronotum, 4 mm,; length of posterior femora, 25 

 mm.; length of ovipositor, 2.3.2 mm. 



The type is the only specimen examined. 

 Anteloplus notatus Scudder. 



Bill Williams Fork, Mohave- Yuma counties, Ariz.; August, F. H. Snowj. 

 One male. This specimen has been examined and compared with U. S. 

 National Museum material by Mr. A. N. Caudell. 

 Stenopelmatus oculatus Scudder. 



Clark county, Kan., 1962 ft.; June, F. H. Snow. One male. 



Magdalena mountains, Socorro county, N. M.; August, 1894, F. H. Snow. 

 Three males, one female. 



Ceutophilus paucispinosa, n. sp. 



Type: Female. Southern Arizona; August, 1902, F. H. Snow. Allied to 

 C. varicator Scudder, but differing in the regularly serrate inferior margins 



