848 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxii. 



length, varyino- from about one-half as long to nearl}^ as long as the 

 posterior femora, moderatel}' curved upward. 



Color varying from dark to light brown, the antennae ringed with 

 brown; lateral lobes of thepronotum with the lower borders generally 

 noticeably lighter in color than the rest; sometimes the disk of the pro- 

 notum is much lighter than the upper pai't of the lateral lobe, while in 

 other cases the color is quite uniform. One specimen, a male from 

 Texas, has yellow stripes marking the sites of the lateral carina of the 

 pronotum and another, from Brownsville, Texas, has the disk green. 

 Tibial spines usually black at the base and the short spines on the 

 femora black. 



3feasurme7its-.— Length, pronotum, male, 9-13 mm., female, 10.5- 

 13; posterior femora, male, 26-35, female, 32-37; cercus, male, about 

 3, ovipositor, 15-29. 



Tyjje. — In the Academy of Natural Sciences, Philadelphia. 



Sj)ecimens examined. — The tjq^e and other specimens from Mexico 

 and a number of individuals from Texas. 



The type, a single female, is from Alta Mira, Tamaulipas, Mexico, 

 taken on June 27, by M. E. Hoag. The National Museum contains 

 two pairs — a female from Carrizo Springs, Texas, August 28, collected 

 by Dr. A. Wadgymar in 1885, a male from Brownsville, Texas, taken 

 b}' 0. H. T. Townsend, and one pair taken at Brownsville, Texas, by 

 C. Schteffer. 



Besides these I have seen specimens in the Scudder collection from 

 P^agle Pass, Texas, Montelovey, Mexico, and from Texas without 

 definite locality; also a number of both sexes from Texas, in the col- 

 lection of the Museum of Comparative Zoology in Cambridge, Mas- 

 sachusetts, and Bruner has specimens from Carrizo Springs, Texas. 

 Othersare in the Museumof the Brookl^^n Institute of Artsand Sciences, 

 in Brooklyn, New York. Professor Morse has taken what he 

 says is this species in Oklahoma. Two pairs f roni Brownsville, Texas, 

 taken by Schteffer are much below the average in size, but seem to 

 present no structural differences. The size as represented by these 

 four specimens, one male and one female of which is in the National 

 Museum, a gift from the collector, are as follows: 



Length, pronotum, male, 9 mm., female, 10.5; posterior femora, 

 male, 26-28, female, 33; ovipositor, 15-18. 



This species attains the largest size of any other member of the 

 genus except S. americanus. From (iniei'icanus it is usually separable 

 with but little difficulty by the characters given in the table of species. 

 The color is quite variable, but the most striking variation is in the 

 length of the ovipositor. A complete gradation from the shorter to 

 the longer ovipositor exists, the following lengths represented by the 

 series examined: 15, 18, 19, 20, 21, 22, 23, 25, 29. The cerci of young 

 males have the inner tooth much shortened. 



