1908. 



NATURAL SCIENCES OF PHILADELPHIA. 



369 



This widely distributed species has previously been recorded from 

 Arizona at Yuma, Nogales, Florence and Phoenix. 



HOMOaOGAMIA Burmeister. 

 Homoeogamia erratica Rehn. 



A single male of this species was attracted to light at Yuma, July 27. 



MANTIDJE 



YERSINIA Saussure. 

 Yersinia sophronica^ n. sp. 



Type: 9 ; Sonora Road Canyon, Tucson Mountains, Pima County, 

 Arizona, altitude 3,000 feet. July 25, 1907. Collected by Hebard 

 and Rehn. 



This very peculiar species differs from Y. solitaria Scudder from the 

 eastern slope and foothills of the Rocky Mountains, western Nebraska 

 and southeastern Arizona in the smaller size, the more compressed 

 head with strongly acute mammiform eyes which are hardly at all 

 divergent and in the shorter cephalic limbs. In the form of the head 

 and eyes this species suggests the structure found in the African and 

 Indian genera Episcopus and Parepiscopus. 



Size small; form very slender; surface smooth. Head strongly com- 

 pressed ; occiput strongly concave, rounded ; 

 interantennal region with a pair of median 

 parallel longitudinal carinse which termi- 

 nate dorsad in short sharp points before 

 reaching the dorsal line of the head; 

 antennae filiform, not quite equal to the 

 pronotum in length; eyes very elongate, 

 not divergent, subparallel, strongly pro- 

 duced mammiform. Pronotum rather 

 short, subequal in width without any 

 marked supra-coxal dilation, the width 

 contained nearly three times in the 

 length; cephalic margin rounded, caudal 

 margin truncate; median carina distinct 

 throughout, but very delicate on the collar. 

 Mesonotum and metanotum httle ex- 

 panded, with distinct median carina, no 

 vestiges of tegmina or wings. Abdomen 

 subfusiform, a finely marked median 

 carina present throughout its length, 

 distal third quite narrow ; supra-anal plate 

 trigonal ; subgenital plate rounded with a median incision dividing it into 



Fig. 1. — Yersinia sophronica 

 n. sp. Dorsal view of type. 

 (X 5.) 



1 l,cj(t>pnviKT/, discreet. 



