MORGAN HEBARD ' 211 



ocular space very slightly wider than that between the antenna! sockets; vertex 

 smooth, but thickly dotted with microscopic pits, these the sockets of microscopic 

 hairs. Pronotum transverse elliptical, with greatest width slightly caudad of mesal 

 point; divided by a feeble, linear, medio-longitudinal sulcus; latero-caudal oblique 

 sulci of disk broad and shallow. Tegmina very delicate; diagonal channel very 

 conspicuous to median vein on both tegmina; discoidal sectors not numerous (6 to 

 7), oblique, the majority springing from the ulnar vein, which parallels the anal 

 sulcus to its juncture with the diagonal channel. Wings hyaline, strongly irides- 

 cent; tinged with buff and pilose in distal area of irregular costal veins; ulnar vein 

 with three arcuate rami, complete to margin of wing. Dorsal abdominal segments 

 unmodified. Supra-anal plate produced, very delicate, with lateral margins con- 

 verging and rounding broadly into distal margin, which is weakly angulato-emar- 

 ginate mesad or nearly transverse. Cerci elongate, with seven joints, these 

 elongate and distincth' articulated, three distal joints small and sharply decreasing 

 in size, the distal joint very sharply conical. CJenital hook situated sinistrad 

 within anal chamber, very elongate and slender, directed dextrad and curving 

 weakly to near the apex, where the shaft is flattened and somewhat expanded, 

 thence brief and very slender, curving sharply cephalo-dorsad to the acute apex. 

 In addition, two curved, chitinous spikes, springing from the same base, are 

 found sinistrad and a single heavier and blunter spike dextrad. Subgenital plate 

 symmetrical, as broad as long, with small, slender, rather elongate styles, symmet- 

 rically placed laterad. between which the distal margin of the plate is moder- 

 ately convex and broadh- truncate. Limbs elongate and slender. Ventro-ceph- 

 alic margins of cephalic femora fringed with short, microscopic hairs. Tarsal 

 joints extremely elongate and slender, caudal metatarsus nearly half as long as 

 the elongate caudal tibia. Minute, microscopic, vestigial arolia present. 



The female of this species is unknown. 



Measurements {in millimeters) 



Esperanza Ranch, Texas. . . (2) 



Brownsville, Texas (2) 



Sierra El Tosti, Mexico .... (3) 



San Jose del Cabo, Mexico. . (3) 



General coloration huffy, diaphanous. Head cinnamon brown, 

 eyes black. Underparts and limbs ochraceous-buff. Pronotum 

 with disk dilute cinnamon brown, lateral margins transi)arent, 

 tinged with buckthorn brown, moderately broad caudad. broader 

 laterad. Tegmina transparent, buckthorn brown. Wings hya- 



MEM. .\M. ENT. SOC, 2. 



