118 CORYLOPHIDA. 
ordinibus transversis fere rectis modice sed confertim asperatis, linea ad suturam utrinque impressis, 
apicibus rotundatis; abdomine longius exserto, obtuso, dilutiore; pedibus sat longis, gracilibus, flavis ; 
8- 
antennis modicis, flavis, clava sat magna obscuriore. Long. corp. lin.=1-1°12 millim. 
Head moderate, narrow ; eyes prominent ; antennx inserted rather far from the eyes. Thorax short, rather 
attenuated in front, not semicircular, widest at the base, flavescent and shining, indistinctly punctured ; 
anterior margin slightly reflexed ; basal margin deeply sinuated and much produced towards the scutellum, 
with the angles acute and very much produced. Scutellum moderate, rounded, and faintly asperate. 
Hlytra rather attenuated posteriorly, not wider than but half as long again as the thorax, widest at the 
shoulders, moderately but closely asperate in straight transverse rows, with an impressed line on each side 
of the suture, the apex rounded. Abdomen considerably exserted, obtuse and paler. Legs yellow, rather 
long and slender. Underparts ferruginous, with the venter paler. 
Hab. GuatEMata, Panajachel (Champion).—Eurors (coll. Matthews). 
One specimen. Differs from other species of the genus in its rather larger size, 
broader and more oblong form, short and anteriorly attenuated thorax, and in the 
form of the antenne. 
Obs. This insect agrees in all respects with a European species which I have. 
separated from S. lateralis, Gyll.; from this latter it is distinguished by its larger size 
and broader form, and especially by the diverse proportions of the joints of the antennae, 
and the anteriorly attenuated thorax. 
CORYLOPHINA. 
Hinder angles of the thorax very acute; antenne 10-jointed . . . . Micréum. 
Hinder angles of the thorax obtuse; antennz ll-jointed. . . . . . CoryLopnopzs. 
MICROUM *, gen. nov. 
Corpus perfecte ovatum, validissime convexum. Oaput totum obtectum; oculis magnis, prominentibus. 
Pronotum modicum, margine anteriore integra, margine basali fortiter sinuata angulis valde acutis. 
Elytra ovata, integra, subtus late inflexa. Antenne leviter geniculate, articulis decem composite, 
duobus basalibus magnis, tribus sequentibus minutis, sexto valde elongato, septimo minuto, tribus 
ultimis valde incrassatis, clavam subfoliatam formantibus. Prosternum parvum, inter coxas parum 
elevatum ; episternis exiguis; epimeris sat magnis; receptacula coxarum late complexis. Mesosternum 
breve; episternis sat parvis; epimeris longis ad coxas extensis; receptaculis coxarum sat distantibus. 
Metasternum modicum, transversum, ad latera corporis haud extensum, margine posteriore inter coxas 
recta; episternis permagnis, latis. Venter segmentis sex compositus, primo permagno, reliquis inter se 
paribus, Pedes robusti; tarsi articulis quatuor compositi, duobus basalibus sat magnis, longe bilobatis, et 
ciliatis, tertio parvo, apicali longo unguibus robustis denticulatis armato. Coxe: anteriores approximate ; 
intermedi sat distantes ; posteriorcs sat remote, long, angustée, ad latera corporis non extense. 
Body perfectly ovate, exceedingly convex. Head moderate, wholly covered by the thorax; eyes large and 
prominent ; mouth very prominent; antennz inserted near the eyes. horaa moderate ; anterior margin 
entire ; basal margin sinuated, with the angles very acute, scarcely produced. Scutellum long and rounded. 
Elytra entire. Antenne faintly geniculated, 10-jointed—1 very long, robust, and recurved, 2 much shorter, 
incrassate, 3, 4, 5 very minute, transverse, 6 as long as the preceding three united, but not wider, 7 very 
minute, 8-10 much incrassate, forming a subfoliate club, furnished with short hairs, 10 oval, larger than 9. 
(Parts of the mouth not dissected, apparently normal.) Prosternum small, slightly elevated between the 
* xpos, small dy, an egg. 
