128 GENUS CERATINOPTERA (oRTHOPTERA) 



reduction, these are seen to be distinctly oblique; all of the veins of the tegmen 

 and wing are, in their fully developed condition, numerous but somewhat irreg- 

 ular. Wings fully developed, decidedly reduced or minute and vestigial. 

 Wing, in its fully developed condition, exceedingly delicate, with marginal 

 area very elongate and scapular field brief with few weakly clavate costal veins; 

 a decided transverse vein connects the discoidal and ulnar veins proximad, the 

 median vein does not extend proximad to this point (all of these veins are not 

 strongly defined, which probably explains the omission of the median vein in 

 Brunner's figure of picta and the omission of this transverse vein in Saussure's 

 figure of nahua), the ulnar vein branching only extremely distad or not at all; 

 intercalated triangle present but very small; axillary vein with a number of 

 branches. Abdomen of males with seventh dorsal segment distinctly special- 

 ized mesad. Supra-anal plate (tenth dorsal abdominal segment) in both sexes 

 wider than long, rather strongly triangularly produced, with lateral margins 

 weakly convex and apex rounded. Subgenital plate of males somewhat 

 asymmetrical, bearing stout styles; of females ample, rather strongly emar- 



ginate and with a brief longitudinal cleft mesad 

 on the distal margin. Limbs short and stout 

 for the group. Cephalic femora with ventro- 

 cephalic margin unarmed in proximal third, 

 suppUed in distal two-thirds with a close-set 

 row of minute piliform spines terminated by 

 Fig. 1. Ceratinopiera nahua two long stout distal spines, no genicular spine 

 (Saussure). present, ventro-caudal margin with a single 



distal spine and occasionally one or two very 

 9. Mmatitlan, Mexico. small marginal spines. Other femora with ven- 

 Outhne of cephahc face of ^^^j ^^^^^^^ ^^.^^j.jy g^^ppUgd with small spines, 

 cephalic femur. (Greatly ^^^^^^ ^-^^^^^ ^^.^^^ ^ j^^^ genicular spine and at 

 enlarged.) (Typical for ^-^^ extremity of each ventral margin with a 

 genus Ceratinopiera.) ^^^^^^ shorter spine. No arolia are present be- 



tween the tarsal claws. 



Material Examined 



The genus is apparently rare in collections; twenty-three speci- 

 mens before us are, with four exceptions, all from the Philadelphia 

 collections. 



Generic Distribution 



The genus is known from the eastern mountains and coastal 

 section of Mexico, as far north as the vicinity of Vera Cruz, and is 

 probably widely distributed southward through Central America 

 and northern South America, the limital records being Caparo, 

 Trinidad; Brazil; Contamano, Peru,* and Cauca, Colombia. 



^ From Brunner's description it does not ai)p(>ar probable that C peruviana, 

 described from Peru, is a member of this genus as j)rc)pcrly restricted. All 

 our exotic material suggests, furthermore, that the genus is restricted in dis- 

 tribution to the Americas. 



