MICROUM.—CORYLOPHODES. 119 
cox@; episterna very minute; epimera rather large, broadly enclosing the coxal cavities; prosternum not 
produced beyond the cox; coxal cavities oval. Mesosternum very short; episterna rather small; epimera 
large and long, extending to the coxal cavities ; coxee round, rather large. Metasternwm moderate, trans- 
verse, not extending to the sides of the body, the hinder margin straight between the cox ; episterna 
very large and broad, extending beyond the metasternum ; epimera long, concealed by the elytra; coxal 
cavities very long and narrow, not quite reaching to the sides of the body. Venter composed of six 
segments—1 very long, nearly as long as the metasternum, 2-6 nearly equal to each other in length, the 
apical segment rather pointed, simple. Legs: anterior with the trochanters very large, oblong, produced 
beyond the femora, and abruptly truncate at the apex; femora long, robust, not incrassate, strongly 
margined on both sides; tibise shorter than the femora, robust, much dilated towards the apex, with the 
outer margin finely serrate; tarsi 4-jointed—1 and 2 large, very deeply bilobed and setose, 3 very small, 
4 long and slender ; claws strong, unidentate beneath ; intermediate much longer than the anterior, with 
the tibie sinuate, in other respects similar; posterior similar to the preceding, but with the tibie ciliate, 
and armed with short spurs. Cow: anterior approximate ; intermediate moderately distant; posterior 
rather remote, very long and narrow, nearly reaching to the sides of the body. 
In the shape of the hinder angles of the thorax Micréum exhibits an affinity to the 
‘Sericoderina,’ but in every other respect of form and structure resembles the ‘ Corylo- 
phina.’ From Corylophodes it differs in having 10-jointed antennz, the sixth joint of 
which is very long, but scarcely incrassated ; also by the acute and slightly produced 
angles of the thorax, and by the epimera of the mesosternum reaching to the coxal 
cavities. 
The single species now described is from Guatemala. 
1. Microum ovoforme, sp. n. 
Late ovatum, validissime convexum, nitidum, rufo-castaneum, pilis minutis parce vestitum; pronoto modico, 
antice valde rotundato, levissime alutaceo, margine anteriore rotundata et marginata, haud reflexa, margine 
basali scutellum versus producta angulis valde acutis; elytris sat longis, quam pronotum vix latioribus, 
sed plus quam duplo longioribus, ad media latissimis, punctis umbilicatis regulariter et eleganter 
impressis, interstitiis alutaceis, lateribus leviter marginatis; pedibus robustis, rufo-piceis, articulis basa- 
libus tarsorum dilatatis; antennis modicis, rufo-castaneis. Long. corp. 4% lin. = 1:25 millim. 
Head moderate, castaneous ; eyes moderate, prominent. Thoraw moderate, much rounded in front, widest at 
the base, delicately alutaceous ; anterior margin margined, but not reflexed ; basal margin produced towards 
the scutellum, with the angles very acute and slightly produced. Scutellwm rounded, impunctate. LHlytra 
rather long, scarcely broader but more than twice longer than the thorax, widest at the middle; regularly 
and elegantly marked with umbilicated punctures, with the interstices alutaceous ; sides slightly margined ; 
apex rather acute. Legs robust, rufo-piceous, with the basal joints of the tarsi dilated. Underparts 
castaneous, with a deeply impressed longitudinal line on the first ventral segment not extending to either 
margin. 
Hab. Guatemata, San Juan in Vera Paz (Champion). One specimen. 
This distinct species is easily recognized by its very convex and entirely ovate form, 
and by the elegant sculpture of the elytra. 
CORYLOPHODES. 
Corylophodes, Matthews, Ent. Monthly Mag. xxii. p. 160 (1885). 
Body more or less hemispheric, generally smooth and very shining. Head small, completely covered by the 
front of the thorax; eyes often large and prominent; antenne generally short, 11-jointed—1 very long 
