LONGICORNIA. 389 
sat valide tuberoso, tuberculis lateralibus haud productis ; elytris valde ineequalibus, tuberibus centro-basa- 
libus quam in L. viridescenti magis elevatis, fasciculis setorum hispidis, fasciculis posterioribus antice albo- 
cinereis, fascia lata albo-cinerea longe post medium utrinque ad latera dilatata et postice prolongata, 
stigmate laterali nigro-fusco, fere obliterato, angusto ; antennis sicut in L. viridescenti articulis 3°-5™ fusco- 
piperitis, ceteris griseis, apice nigris. 
Long. 33-4} lin. 
Hab. Mexico, Cordova (Sallé), Cerro de Plumas (Hége). 
Larger tawny or ashy-brown examples are easily distinguishable from LZ. viridescens 
by the colour and the, broader and more quadrate form of body, typical L. viridescens 
being narrowly ovate and tinted greenish throughout the entire upper surface. 
38. Leptostylus x-griseus. (Tab. XXIV. fig. 1.) 
Elongato-ovatus, paullo minus convexus, fuscus; elytris nigro-fasciculatis, tuberibus centro-basalibus nullis, 
plaga magna communi, versus scutellum dilatata postea angustata, deinde post medium valde dilatata et 
utrinque oblique versus marginem lateralem extensa, grisea; thorace tuberculis 5 dorsalibus validis, 
lateralibus sat elevatis, obtusis; elytris postice curvatim angustatis, apice brevissime oblique truncatis, 
undique sat regulariter discrete punctatis absque carinis; antennis articulis testaceo-griseis, apice fuscis, 
articulis 1°, 3°-6™ fusco-piperitis ; tarsis fuscis, articulis 1° basi, 4° toto, testaceo-griseis. 
‘Long. 33 lin. 
Hab. GuateMaLa, Chacoj in Vera Paz (Champion). 
89. Leptostylus quintalbus. (Tab. XXIV. fig. 2.) 
L. leucopygo proxime affinis ; thorace simillimo, lateribus obtusis dorso tuberculis tantum duobus anterioribus ; 
elytris triente apicali ochraceo, antice flexuose delimitato nec arcuato; differt antennarum coloribus, viz. 
articulis 1°-4™ nigris basi testaceis, 5° toto albo, 6°, 7°, 9°-11™, toto nigris, 8° et 10° albis basi nigris. 
Breviter ovatus, valde convexus, postice abrupte declivis, fulvo-fuscus, thorace, disco elytrisque triente 
apicali ochraceis ; elytris tuberibus centro-basalibus elevatis utrinque bicristatis, grosse punctato-striatis, 
interstitiis nonnullis angustis et elevatis, fasciculis paucis; tibiis et tarsis rufo-testaceis, illis apice nigris. 
Long. 13-2 lin. 
Hab. Panama, Bugaba (Champion). 
40. Leptostylus petulans. 
L. quintalbo affinissimus, sed differt tuberculo utrinque centro-basali unico valde elevato et penicillato; quoad 
colores antennarum et corporis simillimus, sed area elytrorum apicali paullo obscuriori et: antice fascia 
angusta recta albo-cinerea delimitata; elytris post tubercula centro-basalia transversim depressis, dorso 
posteriori valde convexo ibique interstitiis alternis valde elevatis et penicillatis. 
Long. 13-2 lin. 
Hab. Panama, Volcan de Chiriqui (Champion). 
This and the preceding species, with L. leucopygus, L. orbiculus, and L. pilula, form 
a well-marked section of the genus; they are all closely allied to L. macula, Say. 
41. Leptostylus ochropygus. 
L. pygials affinis, sed L. leucopygo similis a quo differt inter alia plaga elytrorum ochracea apicali majori antice 
fere recta (nec curvata). Parvus, breviter ovatus, declivitate posteriori minus abrupta et apice magis pro- 
