239 



terminal article oi the. tarsi longer than the other two united. Presternum 

 armed with a slender spine. Abdomen long ; cerci short ; pieces of tlie 

 ovipositor long and triangular ; sub-anal plate of the male triangular, termi- 

 nating in a point. 



M. superbum, Stal, Ofv. Kongl. Vet. Akad. Forhandl., 1855, p. 352. 



Feinale. — A dull testaceous-yellow. Head and antennae yellowish ; the 

 first article of the antennas above and the three last articles of the palpi dark- 

 fuscous. Vertex with a slender, longitudinal carina at the base ; front be- 

 tween the antennae produced, the produced part sulcate ; each side below the 

 antennje longitudinally carinated. Pronotum produced in the form of an 

 obtuse angle in front, strongly cristate ; the crest strongly emarginate in the 

 middle, so that two crests stand out, of which the anterior is twice slightly 

 emarginate ; behind the middle each side is crenulato-carinate ; the posterior 

 extremity extends upon the elytra. Elytra yellow, marked with a few black 

 spots ; the apex bordered with black. Wings white and dusky in pale- 

 roseate ; anterior and posterior margins bordered with fuscous ; the veins, 

 except in the basal area, fuscous. The abdominal sutures black. Femora 

 and tibiae more or less marked with black. 



Length, 2.5 inches; width, 0.55 inch. 



Honduras (Stal). 



XIPHOCERINI. 



RHOITIALiEA, Biirm. 



Section 1. — Pronotum carinated in front, ungulate : 



a. Posteriorly strongly cristate ; elytra short. 



b. Posteriorly carinated^ but equally elevated throughout : 



R. eques, Burm., Sauss., Rev. et Mag. Zool., XI (1859), 392. 



Grreen, testaceous, or somewhat fuscous. Pronotum punctate, strongly 

 carinated (the front part of the carina in the female more elevated and arcu- 

 ate, in the male equal). Thorax, abdomen, and legs varied with black. 

 Elytra black, with numerous testaceous-green nerves ; as long as the abdo- 

 men (frequently shorter in the female and longer in the male). Wings 

 cochineal-red, with a black border, the median area, pellucid. 



Length, 1.6 to 2.4 inches. 



Mexico calida (Saussure) ; Honduras (Walker). 



