LEPTYSMA. 253 



Synopsis of the Species q/'Leptysma. 

 A. Body very slender, almost linear ; the hind femora short and weak. 

 Fastigium of the vertex as long as, or longer than, the longest 



diameter of the eyes [l. minima, Bruner.] 



A A. Body comparatively robust ; the hind femora longer and more 

 robust. Fastigium of the vertex shorter than the longest 

 diameter of the eyes. 

 b. Body slender, but in nowise linear. Antennae fully as long as, or 



longer than, the combined length of the head and pronotum . 2. mexicana, Sauss. 

 bb. Body more robust. Antennas always shorter, sometimes consider- 

 ably so, than the combined length of the head and pronotum . 3. marginicollis, Serv. 



[l. Leptysma minima, Bruner. 



Leptysma minima, Bruner, Journ. N. Y. Ent. Soc. xiv. p. 152 (1906) \ 

 ? Leptysma filiformis, Boliv. Orthopt. Cuba, p. 31 (1888) 2 . 



Hah. Trinidad 1 ; Cuba 1 ? 2 . 



This species was described from a single female specimen that was collected in 

 alcohol and subsequently pinned. It approaches L. gracilis, Bruner, from South- 

 eastern Brazil, most closely in size. The insect referred to by Bolivar as L. filiformis, 

 Serv., possibly belongs here.] 



2. Leptysma mexicana, Saussure. (Cornops mexicanum, Tab. III. figg. 25, 25 a.) 

 Opomala mexicana, Sauss. Rev. et Mag. Zool. 1861, p. 156 1 ; Thomas, Acrid. N. Am. p. 197 (1873) *. 

 ? Arnilia mexicana, Boliv. Orthopt. Cuba, p. 31 (1881) 3 ; Scudd. Cat. U.S. Orthopt. p. 46 (1900) *. 

 Leptysma mexicana, Riley, N. Am. Fauna, vii. p. 252 (1893) 5 . 



Eab. North America 245 ; Lower California, San Jose del Cabo {Calif. Acad. 

 Sciences). — Mexico, Presidio (Forrer), San Eafael, Vera Cruz (C. H. T. Townsend). 



Possibly the Cuban and some of the United States citations belong to the next 

 species, which is a much more widely distributed and variable insect than the present. 



3. Leptysma marginicollis, Serville. (L. mexicana, Tab. III. figg. 24, 24 a.) 

 Opsomala marginicollis, Serv. Hist. Orthopt. p. 591 (1839) 1 . 



Opomala marginicollis, Thomas, Acrid. N. Am. pp. 66, 196 (1873) 2 . 

 Arnilia marginicollis, Stal, Recens. Orthopt. i. p. 86 (1873) 3 . 

 Leptysma mexicana, Bruner, in litt. 4 . 



Eab. North America 1-4 , San Diego, California, Phcenix, Arizona (coll. L. Bruner), 

 Texas (coll. Zurich Mus.). 



Other Texas and Arizona records are at hand, and it is quite certain that this insect 

 is to be met with at suitable localities throughout Northern Mexico. Arizona and 

 California specimens are less profoundly punctured than eastern ones. 



