444 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ni 



Hemelytron: Claviis and coriiim polished, clavus usually with one 

 row of punctures, sometimes with partial second row; mesocorium 

 with one complete and one medially interrupted row of punctm-es 

 paralleling claval suture, elsewhere obsoletely or minutely punctate; 

 exocorium with punctures of various sizes scattered along length; 

 costa convex dorsally, with one, or rarely two, setigerous punctures; 

 membranal suture straight, lateral angle not produced; membrane 

 longer than basal width, surpassing apex of abdomen. 



Propleuron: Wealdy alutaceous to shining, with few distinct 

 punctures in depression; prosternal carinae about as high as labial II, 

 abruptly rounded off posteriorly. 



Mesopleuron: Evaporatorium reaching lateral margin of segment; 

 lateral area shining, with few oblique rugae. 



Metapleuron: Terminal modification of peritreme somewhat 

 transverse, polished only along posterior margin, distinctly separated 

 from lateral margin of evaporatorium by space less than diameter of 

 the lobe; lateral area polished, impunctate. 



Legs: Anterior tibia with six to eight stout spines dorsally. 



Sternites: Shining, minutely punctate, with few coarse punctures 

 and weak, longitudinal rugae laterally. 



Terminaha: Genital capsule shining, with small, shallow emargina- 

 tion apically; gonostylus as illustrated (fig. 214). 



Length of body: 5.38(4.79-5.77). 



Female : Similar to male, lacking punctate subapical impression on 

 pronotum. 



Head: Length-width ratio, 0.98(0.94-1.03) :L24(1. 16-1.30); inter- 

 ocular width, 0.86(0.80-0.90). Antennal segments: I, 0.30(0.30-0.32); 

 II, 0.37(0.35-0.40); III, 0.36(0.34-0.40); IV, 0.47(0.43-0.53); V, 

 0.54(0.49-0.63). Labial segments: I, 0.40(0.36-0.43); II, 0.70(0.68- 

 0.73); III, 0.51(0.48-0.56); IV, 0.38(0.36-0.41). 



Pronotum: Length-width ratio, 1.35(1.19-1.49) :2.70(2.47-2.93). 



Scutellum: Length-width ratio, 1.99(1.85-2. 18):1.61(1.43-1.69). 



Length of body: 5.26(4.81-5.82). 



Type data: Holotype male (USNM 64418), "Lower California, 

 Pacific Slope, Calexico, Cal., vi-30-40." Allot3i)e female (USNM), 

 same data. Paratypes as follows: 



United States: Arizona: Elroy Aug. 4, 1932, E. D. Bell, 4 females (USNM). 

 Patagonia, July 1936, E. S. Ross, 1 male (CalAc). Oak Creek Canyon, July 9, 

 1941, L. H. Beamer, I male, I female (KU). Salt River Valley, October 1933, 

 A. F. Swain, 4 males, 3 females, 2 nymphs (RLU) and (in lettuce) I male, 1 female, 

 2 nymphs (Cal Ac). San Luis, Yuma Co., Aug. II, 1940, E. C. Van Dyke, 2 

 females (Cal Ac). Tucson, July 7, 1949, R. H. and L. D. Beamer, 5 females (KU); 

 July 29, 1924, E. P. Van Duzee, 1 male (Cal Ac). Yuma, Aug. 6, 1948, C. and P. 

 Vaurie, I female (AmM). California: Brawley, Oct. 14, 1936, A. T. McClay, I 

 female (McC). Dos Palos (Merced Co.), Aug. 14, 1947, V. M. Stern, 1 male 



