MORGAN HEBARD 1 87 



Length Length Width Length Width Length Length 

 9 of of of of of of of 



body pronotum pronotum tegmen tegmen cercus caudal tibia 



Tampa, Florida 24.3 8.1 10. i 22.9 8.7 5.9 10.3 



Miami, Florida 29 8.7 1 1. 4 25.7 9.7 — — 



Big Pine Key. Florida. .. . 27.5 8.8 1 1.4 25.3 9.3 5.9 11. 7 



Key West, Florida 26 7.8 10 23.7 8.8 5.8 10.2 



Similar differences to those discussed under bruyinea, due to in- 

 dividual ^•ariation, are also found in this species. 



Coloration. — The present insect, though showing a type of 

 pronotal color pattern analogous to that found in americana and 

 bninnea, is much more striking and beautiful, due to the greater 

 intensity of the dark markings and their sharply defined margins. 

 Head with entire occiput shining blackish brown, extending to 

 ventral margin of interocellar area, but wath a medio-vertical line 

 in that space of ochraceous-bulT, tinged with orange.-" Prono- 

 tum ochraceous-buff with an orange tinge, caudal portion broadly 

 margined with black, other margins very narrowly outlined in 

 black, two large, meso-cephalic, black blotches occur which fuse 

 meso-cephalad,-'^^ the margins of these markings all sharply de- 

 lined. Tegmina deep bay, translucent distad, wath marginal field 

 ochraceous-bulT, except for a narrow^ border of bay at the costal 

 margin. Abdomen butTy, sutTused with dark brow^n; in some 

 females the dark brown is decided distad, with conspicuous lateral 

 ochraceous-buff blotches on each segment. Coxae buffy, remain- 

 ing portion of limbs bay. 



Of the North American species of the genus, small immature 

 examples of aitstnihisiae are distinctive in being generally less 

 unicolorous, and in having a decided pale marking latero-caudad on 

 the pronotum. In the later instars, immatures show the transition 

 to the color pattern of the adult. 



Ootheca. — A stout, rectangulato-ovate capsule; 10.2 by 5 mm. in 

 one example before us. The surface is microscopically shagreenous, 

 with feeble indentations between the Qgg cells as in americana. 

 Sutural ridge distinct, but much lower than in americana, with 



-'"This is sometimes subobsolete; rarely it expands into a triangular marking, wiih 

 apex ventrad, occupying nearly the entire interocellar area. 



-'* Sometimes these blotches are more widely fused and send slender rays of this color 

 toward the caudal margin; rarely the blotches are very extensiv-e, leaving only a narrow 

 band of the pale coloration cephalad and a wider suffusion meso-caudail. 



MEM. AM. ENT. SOC, 2. 



