CALAMACRIS. 201 



1. Calamacris clendoni, Eehn. 



Calamacris clendoni, Rehn, Proc. Acad. Nat. Sci. Philad. 1904, p. 529 \ 

 Hab. Mexico, Guadalajara in Jalisco l . 



This insect is not represented in the collections at hand. It is just possible that the 

 sexes as described by Mr. Rehn belong to distinct species, since the discrepancy in size 

 between the two is greater than between the smallest male and largest female of all 

 the material before me. His statement that the female has a " form much as in the 

 male but slenderer " does not agree with any of the other species here described. 



[2. Calamacris Californica, sp. n. (Atyphoscirtus califomicus, Tab. IV. 

 figg. 24, ?; 25, 25 a, 6 .) 



General colour brownish-testaceous, with a tinge of olive about the head and thorax above. The male is 

 marked with a pale line on each side of the head, along the lower edge of the pronotum, and across the 

 sides of the meso- and metathorax to the base of the hind femora. The inner side of the middle femora 

 of the male and the knees of the hind pair in both sexes are black or fuscous. 



The fastigium of the vertex is shorter and very much narrower than in C. mexicana, with its apex acuminate 

 even in the female. Surface of the body somewhat rugose in the female and more or less transversely 

 wrinkled, in the male much smoother and punctate. 



Length of body, <5 21, $ 30; of antennae, <S 9*5, $ 8-5; of pronotum, J 3*5, £ 4*8; of hind femora, tf 9*5, 

 $ 10-5 millim. 



Hab. Lower California, San Jose del Cabo (coll. Calif. Acad. Sci.).~] 



[3. Calamacris mexicana, sp. n. (Atyphoscirtus mexicawus, Tab. IV. 

 %. 26, $ .) 



General colour dark grey-brown, with the venter and the inner face of the hind femora flavous. Antennae 

 triquetrous, heavy and unusually broad at the base, shorter than the head and pronotum taken together ; 

 inserted considerably in advance of the eyes. Head of about the same length as the pronotum ; the 

 fastigium somewhat longer than one of the eyes, its sides a little convergent anteriorly, the front edge 

 rounded ; eyes striped longitudinally with brown, only moderately prominent, one-half longer than broad, 

 their hind edge truncate, separated above by a space nearly equal to their shortest diameter ; occiput 

 rugose and canaliculate. Pronotum subcylindrical, punctate, rugose and coarsely, longitudinally carinate ; 

 the hind lobe very short and lacking the longitudinal carinas, its posterior edge nearly straight, very 

 gently emarginate in the middle. Meso- and metathorax, as well as the abdominal segments above, 

 provided with several longitudinal ridges, which give to the insect a corrugated appearance. Tegmina 

 very rudimentary and narrow, reaching only to the hind margin of the mesothoracic segment. Abdomen 

 rather long and cylindrical ; the valves of the ovipositor slightly crenulate on the outer edges and 

 furnished with a series of small tubercles on their disc above. Hind femora small, slender, their apices 

 falling considerably short of the tip of the abdomen. Hind tibia? with 10 or 11 spines in the outer row. 

 The anterior edge of the prosternum with a somewhat elevated transverse ridge. 



Length of body, $,30; of head 4*6, of pronotum 4-15, of tegmina 1*5, of hind femora 10, of antennas 

 7 millim. 



Hab. Lower California, Patrocinio (Chas. 1). Haines, coll. Calif. Acad. Sci.). 

 A single specimen.] 



biol. centr.-amer., Orthopt., Vol. II., October 1906. 2 Dd 



