GEOLOGICAL SURVEY OF THE TERRITOEIES. 



445 



proiiotum rounded, not canned, densely punctured j on the dorsum 

 there is generally a glabrous, semicircular spotj there are also some 

 irregular glabrous impressions on the sides; front rounded; posterior 

 margin nearly straight, slightly rounded at the humerus, where there is 

 an entering angle. Elytra passing the abdomen about one-third their 

 length; upper margin straight from the dorsal angle; lower margin 

 rounded from the base to the apex; apex angled. Wings about as 

 long as the elytra. Ovipositor about as long as the body, nearly straight, 

 lanceolate at the apex; cerci of moderate length, swollen, slightly curved, 

 with a slender, pointed apex. Posterior lateral angles of the mesoster- 

 num furnished with a strong spine. External carinse of the femora fur- 

 nished with strong spines ; also a sharp spine each side of the apex 

 of each, projecting forward. Anterior tibisd without spines in front; 

 middle with two rows above, two in each rov7 ; posterior with two rows 

 beneath. Anterior coxae furnished externally with a strong-curved spine. 

 Tlie abdomen of the male has, at the apex of the last ventral segment, 

 the usual cylindrical appendages; superanal plate bilobed; no cerci ap- 

 parent in the only male I have seen. Legs of the male quite hairy. 



Color. — Body and elytra uniform bright pea-green ; under side and 

 edges of the frontal cone bright-yellow ; labrum and clypeus yellow ; 

 mandibles deep piceous black, except the upi^er external angles, vvhich 

 are green; ovipositor dull yellow, slightly strir)ed with fuscous near 

 the apex ; tarsi pale fuscous ; eyes brown. 



Bimensions. — 9 , length (exclusive of cone) to tip of abdomen, 1.5 

 inches ; cone, .3 inch ; elytra, 1.28 inches ; posterior femora, .87 inch ; 

 posterior tibise, .83 inch; ovipostor, 1,5 inches. J , length, 1.25 inches ; 

 elytra, 1.05 inches. 



9 , Fig, 14, PI. viii ; J , Fig. 8, PI. vii^ of Professor Glover's plates of 

 OrthoiJtera. 



This species was obtained by Professor Glover in the greenhouse of 

 the Agricultural Department at Washington. It has evidently been 

 introduced with the plants brought from some tropical section. The 

 only i^lants received last fall or winter from the tropics were from 

 Central America and Cayenne. 



If the mesosternal spines, which are very prominent, do not dis- 

 tinguish it from other species, the very interesting inquiry arises. Has 

 it been produced from the eggs of some known species, the variations 

 between the perfect insects having been produced hj the diiierent cir- 

 cumstances under which they have grown to maturity'? So far as I 

 am aware, the following list embraces all the species hitherto de- 

 scribed : 



C. cornuta, Serv. 

 C. Mexicana, Sauss. 



Para. 

 Mexico. 

 C. lucifera, Burm.-— Bahia. 

 C. flavo-scripta,Walk. — Venezuela. 

 C. longicauda, Serv. — Cayenne. 



C» megacephala, Burm. — Isle St. 

 Johanna. 



C. gracilis, Scudd. — Napo, or Mar- 

 anon. 



C> cuspidata, Haan. — Brazil. 



Although not from the West, 1 have given a description of it here 

 on account of the interest which attaches to it. 



EpMpintytlia gracilipes, Thos. 



I did not meet with this species west of the mountains, but find it 

 among Dr. Palmer's collections, marked Northern Arizona. Plate II, 

 Fig. 11. 



