450 PROCEEDINGS OF THE ACADEMY OF [Juiie^ 



and more slender than in the species having a more rigid ovipositor;, 

 apex with margin of portion formed by dorsal valves nearly straight 

 or obliquely subtruncate and armed with serrulations or serrations, 

 the portion formed by the ventral valves unarmed. 



Nemobius toltecus Saussure. 



1859. N[emobius] toltecus Saussure, Rev. et Mag. Zool., 2e Ser., XI, p. 316. 



' (Original description.) [Mexico.] 

 1869. Nemobius mexicanus Walker, Cat. Dermapt. Saltat. Br. Mus., I, 



p. 57. (Description.) [Oajaca, Mex.] 

 1874. Nemobius toltecus Saussure, Miss. Sci. Mex., Rech. Zool., VI, pp. 386,. 



387. [Oajaca, Mex. From notes, probably on material originally 



described. Type lost.] 

 1897. Nemobius toltecus Saussure, Biol. Cent. Amer., Orth., I, pp. 223, 224. 



[Omilteme in Guerrero, Mex. Scudder's incorrect localities also given.] 



This striking species has a decided superficial resemblance to the 

 Old World N. sylveshis, from which species it differs in being a little 

 smaller and in having the ovipositor curved and armed and the 

 tegmina not obliquely truncate. 



From the North American species it may be separated readily by 

 its color pattern combined with the characters of the ovipositor which 

 is considerably heavier and more curved than in any of these. 



Type: 9 ; Mexico (probably State of Oaxaca). [Type lost.] 



We here describe a female from Omilteme, Guerrero, Mex., taken 

 in July at an elevation of 8,000 feet by H. H. Smith and now in the 

 British Museum. 



Size large (for the genus), form heavy and compact; head rather 

 large, full and rounded, about as wide as the pronotum. Pronotum. 

 with length contained not quite one and four-tenths times in greatest 

 (caudal) dorsal width, narrowing slightly cephalad. Tegmina very 

 short, not half as long as the caudal femora; distal margin of dorsal 

 field almost transverse, very broadly arcuato-truncate; intermediate 

 channel distinctly depressed; longitudinal veins rather heavy; 

 cross-veinlets faint. Wings absent. Ovipositor very heavy, length 

 contained about one and one-half times in that of the caudal femora, 

 distinctly arcuate (decidedly so for the genus) , apex of same narrowly 

 sublanceolate enlarged with that portion formed by the dorsal 

 valves armed, the upper margin serrate, these serrations small, short 

 and blunt (heavier than in any of the other North American species 

 having a curved ovipositor). Caudal femora heavy, greatest (meso- 

 cephalic) width contained slightly more than two and one-half times. 

 in length. 



The male of the present species is unknown. 



