299 LONGICORNIA. 
2. Hemilophus longulus. 
Elongatus, subgracilis, postice parum ampliatus, breviter sparsim erecte pilosus, niger ; capite thoraceque supra 
fulvo-ochraceis, illo postice vittis quinque, hoc vitta dorsali alteraque latiore laterali nigris ; elytris vel totis 
fulvo-ochraceis vel nigris dimidio basali (aut plaga triangulari humerali tantum) flavo-ochraceo, apice rotun- 
datis, dorso lineatim punctulatis, costulis duabus dorsalibus modice, carina laterali (apicem fere attingente) . 
valde elevata, epipleuris (parte juxta basin excepta) declivibus; antennis nigris, articulis basi testaceis, 1°, 
3°, et 4° dense pubescentibus, infra penicillatis ; pedibus fuscis, basi pectoreque medio testaceis. 
Long. 44-54 lin. ¢ 2. 
Hab. Mexico, Cordova (Sallé, Hoge), Jalapa (Hoge). 
8. Hemilophus varians. | 
Latius, postice dilatatus, breviter erecte pilosus, niger (pro- et mesosterno fulvis) ; capite thoraceque supra fulvis, 
illo postice vittis tribus, hoc vitta dorsali (interdum valde dilatata, alias obsoleta) alteraque laterali nigris ; 
elytris apice late rotundatis, margine apicali plus minusve breviter sinuato-truncato, dorso bicostatis inter- 
stitiis irregulariter punctatis, carina laterali usque fere ad apicem continuata, lateribus postice explanatis ; 
elytris totis fulvis, vel nigris dimidio basali fulvo vel humeris fulvis ; femoribus basi testaceo-fulvis. 
Long. 3-6 lin. ¢ @. 
Hab. Mexico, Cordova, Tuxtla (Sallé); Guatemaua, Capetillo, Zapote, Purula, 
Cubilguitz, Senahu (Champion). 
Very similar to H. longulus, but broader and more robust, with the sides of the elytra 
flattened out (especially in the female) from before the middle, the explanated margin 
increasing slightly in width until near the apex, where it is rounded off towards the 
suture, the edge presenting a shallow sinuation before the sutural angle is reached. 
Besides this difference in general form, there is a difference in the short black stripes of 
the occiput, H. longulus having a distinct narrow vitta on each side separate from the 
broad black stripe of the cheek, which vitta is wanting in all the numerous varieties of 
H. varians. The punctuation of the interstices between the dorsal raised lines of the 
elytra is irregular in H. varians, and arranged in lines in H. longulus. H. varians 
appears to be a common insect in Guatemala, and has been sent home in great plenty by 
Mr. Champion. I have adopted the MS. name given to it in the Sallé collection. 
TYRINTHIA. 
Tyrinthia, Bates, Ann. & Mag. Nat. Hist. ser. 3, xvii. p. 371 (1866). 
Cyphometopus, Thomson, Physis, ii. p. 192 (1868). 
The elytra in this genus are depressed, and more or less dilated towards the apex, 
with epipleura, of small elevation, not separated from the dorsal surface by distinct 
carine. The antenne have the third joint greatly elongated and, with the base only of 
the fourth, slightly thickened and densely fringed with long hairs. The typical species 
have in the male the forehead very prominent, and cleft in the middle by a longitudinal 
furrow, giving it a bicuspid appearance as seen from above; but in some species this 
striking peculiarity is much less developed, and in others the forehead is simply convex, 
