21.6 TERTIARY INSECTS OF NORTH AMERICA. 



PARALATINDIA Saussure.. 



This peculiar genus, which is nearly allied to the equally striking 

 Latindia, and from which Saussure considers it should only be distinguished 

 subgenerically, is known only by a single species from Mexico ; Latindia 

 conies from Mexico and Brazil. The occurrence of a fossil of this group, 

 differing considerably from the known species, is a curious fact. 



PARALATINDIA SAUSSUREI. 



PI. C, Fig. 25. 



Prothorax concealing the head, smooth, well rounded, triangular, a 

 little broader than long, broadest posteriorly, the hinder margin nearly 

 straight, the front strongly convex, almost produced, the lateral angles 

 rounded. Tegmina extending beyond the extremity of the abdomen by 

 about the length of the pronotum, together considerably broader than the 

 pronotum, the costal margin pretty strongly arched. Mediastinal vein 

 almost completely aborted, the scapular running parallel to ihe margin in 

 the basal half of the wing, and furnished from the very base with slightly 

 oblique, frequent, distinct cross-veins running to the margin and forming 

 rhomboidal cells about twice as broad as long; the next vein is connected 

 with the scapular by transverse, not oblique, tolerably distant cross-veins, 

 and similar cross-veins appear more or less in the apical half of the wing. 

 The oblique fold characteristic of this genus is clearly shown in the detached 

 wing thrown partly forward, but the species differs from the living type in 

 its greater size, considerably larger wings, the extreme brevity of the raedi- 

 astinal vein, and the frequent distinct and little oblique branches of the scap- 

 ular vein ; nor is the pronotum in the least hairy. 



Length of body, 5.5"""?; of pronotum, 1.85 mm ; breadth of same, 

 2.25""" ; length of tegmina, 5.2 >""" ; breadth of overlapping tegmina at rest, 



} cmm 



Named for the distinguished entomologist, Dr. Henri de Saussure, of 

 Geneva, Switzerland. 



Green River, Wyoming. One specimen, Dr. A. S. Packard, No. 137. 



