MORGAN HEBARD 167 



plate beneath supra-anal plate formed into two large, lamellate, chitinous 

 and symmetrical valves. Subgenital plate evenly convex, with free margin 

 evenly and broadly convex, except before the cerci, where a very weak con- 

 cavity is indicated. 



Pronotum shining, cephalic margin narrowly and lateral margins more 

 broadly opaque, warm buff, remaining portions very dark chestnut brown, 

 paling along caudal margin to hazel. The pale marginal band does not invade 

 the dark area latero-caudad. Head blackish chestnut brown; ocelli and 

 palpi warm buff, the latter with all but proximal portion of distal joint suf- 

 fused with prout's brown; mouthparts and two proximal joints of antennae 

 ochraceous-buff, remaining portions of the latter prout's brown. Tegmina 

 weakly transparent, tawiiy, paling to buckthorn brown distad and along 

 costal margin, marginal field transparent light buff, the mediastine vein 

 distinct and brown to slightly beyond its median point. Wings trans{)arent, 

 very faintly tinged with cinnamon brown, veins cinnamon brown or paler, 

 distal portions of costal veins buffy (this including the entire area of the 

 costal veins in the specimen from Baja Cahfornia). Remaining portions of 

 dorsal surface buffy; mesonotum, metanotum and distal portion of abdomen 

 washed with brown. Cerci mummy brown. Ventral surface and limbs 

 ochraceous-buff, the abdomen tinged with tawny,'^ the coxae each with a 

 suffused spot of prout's brown proximad, the spines tawny. 



Length of body," cT' 11.8 to 11, 9 11.7 to 11; length of pron,jtuni, d" 

 3 to 2.9, 9 3.2.5 to 3.1; width of pronotum, cf 4 to 3.8, 9 4.15 to 4.1; length 

 of tegmen, o^ 12.3 to 12.2, 9 12.7 to 12.6; width of tegmen, c? 3.8 to 3.8, 

 9 4 to 4 mm. 



In addition to the described pair, a paratypic male from Villa 

 Union, Sinaloa, taken by J. A. Kusche, September 2, 1918, and 

 a female from San Jose del Cabo, Baja California, have been 

 examined. 



CAHITA'-^ new genus 



This genus, known to us only from the male sex, in structure 

 and coloration suggests the genus Symploce, the form, however, 

 being even broader. Further examination, shows it to be a very 

 distinct entity, remarkable for the distinctive palpi, ventro- 

 cephalic margin of the cephalic femora armed as in Ischnoptera 

 but with only two heavy distal spines, very weak production 



'^ In some specimens deepening to russet distad. 



"The measurements for the male type are given first, a male paratype 

 from Villa Union second. For the female sex the allotype is given first, a 

 female from San Jose del Cabo second. 



'*A vigorous Sonoran Branch of the Uto-Aztecan Indians, inhabiting ihe 

 region in which this species occurs. 



TR.\NS. AM. ENT. SOC, XLVUI. 



