80 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERA) 



the tegminal apices. Pros'ternum bispinose. Cerci acuminate, straight, the 

 section of the shaft proximad of the tooth more slender than the median portion, 

 which is subinflated, tooth pkced at about the proximal third on the internal 

 face and directed cephalo-laterad, the tooth being subequal in length to the 

 proximal portion of the shaft, greatly thickened at the base and with a very 

 slender and subspiniform apex, median portion of shaft subequal in width, the 

 distal third tapering with the immediate apex blunt; subgenital plate with the 

 distal margin subtruncate, styles small, slender and tapering, ventral surface 

 of plate with a weak median and much thicker paired lateral carinae. Caudal 

 femora sUghtly shorter than the body length, slightly surpassing the tips of the 

 wings, strongly inflated in the proximal half and regularly tapering to the 

 slender distal portion, ventral margins unarmed, genicular lobes very briefly 

 and rather bluntly unispinose. 



The type specimen is unique. 



Measurements of Type (in millimeters) . — Length of body, 18.2; 

 length of pronotum, 4.9; length of tegmen, 16.6; length of caudal 

 femur, 16.1. 



Color Notes. — General color on the lateral lobes of the prono- 

 tum and on the abdomen kildare green, passing into mignonette 

 green on the limbs and chrysolite green on the face and genae, 

 the apex of the abdomen passing into chamois. Dorsum of the 

 fastigium, occiput and dorsum of pronotum snuff brown, becom- 

 ing tawny-olive on the middle of the pronotal disk, a fine median 

 dividing line of the general color present on the head, while on 

 the pronotum the distinct dark bordering margins of the area 

 and a continuation of the dividing line of the head are seal brown, 

 the lateral bordering sections regularly arcuato-convex and thus 

 converging caudad as well as cephalad. Cerci weakly washed 

 distad with Indian red. Dorsal tibial spines black for the greater 

 portion of their length, ventral tibial spines with black less exten- 

 sive. Eyes vinaceous-tawny. Antennae, except the two proximal 

 joints, ferruginous, sparsely annulate with seal brown. 



Distribution. — This species is only known from the type locality 

 in western Mexico-Guadalajara, state of Jalisco. 



Remarks. — This species is quite close to 0. miispina and addi- 

 tional material may show them to be inseparable specifically, but 

 at the present writing we have found no indications elsewhere in 

 the genus, of variation sufficiently decided to cover the differences 

 in the character of the humeral sinus and of the cerci seen in 

 these two forms. There is no alternative to our present course 

 but to arbitrarily consider them to be the same form, which would 

 not be warranted by our knowledge of the general fixity within 



