98 SILPHID. 
punctate-striate, the interstices smooth and shining, with a few larger punctures on the fifth and seventh, 
the sides broadly margined, the apex obtuse. (In this specimen there are irregular depressions on the 
elytra, which appear to have been caused by immaturity.) Legs very long and slender, castaneous; the 
four anterior tarsi dilated at the base. Underparts pitchy-castaneous, rather strongly alutaceous, with 
remote setigerous punctures on the ventral segments; apical segment very deeply bilobed (probably a 
sexual distinction), exposing the extremity of the last abdominal segment. 
Hab. Mxxico, Volcan de Orizaba (Sadlé). 
This interesting species differs from any which have been previously described in its 
narrow and more elongate form, smaller size, differently shaped thorax, and general 
sculpture. As this is the only specimen of the genus I have ever seen, I cannot specify 
its peculiarities more distinctly; but in P. sal/wi I can find no vestige of the frontal 
ocelli mentioned by some authors: the deep impressions between the eyes are certainly 
present, but they contain nothing in the form of ocelli. In this matter I do not intend 
to follow the example of some naturalists, who, from the examination of a single indi- 
vidual, boldly assert that certain characters do not exist in specimens which they have 
never seen ; but merely to say that in the Pteroloma now before me I can find no trace 
of the ocelli in question. 
CHOLEVINA. 
CHOLEVA. 
Choleva, Latreille, Précis Caract. Gén. Ins. p. 14 (1796). 
Body more or less ovate, generally convex and pubescent. Head subtriangular, not retractile, fitted by an 
abrupt ridge to the front of the pronotum. Thorax moderate, sometimes small, generally widest at or near 
the base. lyira entire, often large. Antenne often long and slender, 11-jointed, very slightly thickened 
towards the apex, the 8th joint smaller than the 7th or 9th. Prosternum rather large, broadly enclosing the 
coxal cavities ; episterna moderate ; epimera large and broad; coxal cavities moderate, contingent, enclosed 
behind. Mesosternum rather large, not separating the coxal cavities ; episterna large, humeral ; epimera 
very large and broad, extending to the coxal cavities ; coxal cavities large, contingent. Metasternum very 
short, not extending to the sides of the body ; episterna long, reaching to the coxe ; epimera very long, 
extending beyond the coxe ; coxe very large, pyriform, not contingent. Venter composed of six segments. 
Legs generally long. 
A genus of almost universal distribution, though apparently very rare in tropical 
regions ; two species only have been received as yet from Central America. 
1. Choleva fimbriata, sp. n. (Tab. III. fig. 10.) 
Ovata, sat lata, castanea, pilis densis ad margines longioribus vestita ; capite parvo, postice abrupte truncato, 
profunde et confertim punctato, interstitiis alutaceis; oculis sat magnis, valde prominentibus ; pronoto 
brevi, quam caput vix longiore, sed latiore, basin versus latissimo, profunde et confertim punctato, inter- 
stitiis profunde alutaceis, antice et lateraliter rotundato, margine basali leviter sinuata angulis rotundatis ; 
elytris quam caput atque pronotum sesqui-longioribus, parum latioribus, ante media latissimis, ordinibus 
transversis fere rectis, profunde et confertissime punctatis, lateribus marginatis, apice obtuso ; pedibus 
modicis, castaneis, tibiis spinosis et calcaribus ad apices armatis, tarsis anticis valde dilatatis ; antennis 
modicis, castaneis, articulo septimo cwteris majore, octavo exiguo, apicali acutissimo. Long. corp. 23 lin. 
=4°25 millim.; lat. 1 lin. =2 millim. 
Body ovate, rather broad, castaneous, densely pilose, fringed with longer hair on the margins. Head small, 
abruptly truncate posteriorly, deeply and closely punctured, with the interstices alutaceous; mouth 
