PISAUS.—TYRANNION. 593 
striate, the interstices opaque. A single example from Sinanja, Vera Paz, may belong 
to this species; but it is broader, and has the legs stouter, the tibie less angulate 
externally, and the elytral interstices rather shining. 
TYRANNION, gen. nov. 
Rostrum strongly curved, nearly or quite reaching the front of the metasternum ; antennz with the funiculus 
7-jointed, the club ovate ; eyes coarsely facetted, large, partly exposed in repose ; prothorax transverse, 
bisinuate at the base, with feebly developed ocular lobes; scutellum visible; elytra rather short, usually 
much wider than the prothorax, narrowing from near the base, the alternate interstices not costate ; 
mesosternum oblong or horseshoe-shaped; metathoracic episterna broad; ventral segment 2 longer than 3 
(very slightly so in 7’. validus); legs short, similar in the two sexes, femora unidentate, tibiee rounded 
externally at the base, tarsal claws simple; body ovate or subovate. 
Type, 7. validus. 
The numerous species from which the above characters are taken approach some of 
the more aberrant forms here placed under Eudulus. They may be known by their 
ovate form, the comparatively short, broad, non-costate elytra, the short prothorax, the 
coarsely facetted, partly exposed eyes, the rather long, strongly arcuate rostrum, 
the oblong or horseshoe-shaped mesosternum, &c. Tyrannion is no doubt well 
represented in South America*. The Central-American forms, most of which appear 
to be rare, may be grouped thus :— 
a. Eye-facets flattened ; antenne inserted towards the base of the rostrum ; ventral 
segment 2 very little longer than3 . . ........ 2.4.2, Species 1. 
b. Eye-facets convex ; antenne inserted at or beyond the middle of the rostrum ; 
ventral segment 2 considerably longer than 3. 
a', Prothorax with two setigerous prominences at the apex and another on the 
disc, the sides crenulate ; elytra here and there nodose woe ee ee) Species 2. 
b!. Prothorax with two setigerous prominences on the disc, the sides rounded . Species 3. 
c!. Prothorax without setigerous prominences on the disc, the sides rounded. 
a, Elytra with small prominences scattered over the whole surface. . . . Species 4. 
b". Elytra with at most one or two small prominences on the second, third, or 
fifth interstice . 2... ee ee ee ee ee ww we) Species 5-28. 
1. Tyrannion validus, sp.n. (Tab. XXIX. figg. 8, 8 a.) 
Broad-ovate, robust, shining, black, the antenne obscure ferruginous; the head, prothorax, and legs thickly 
clothed with small fulvous scales, the elytra mottled with fulvous, blackish, and ochreous scales, and also 
set with short, decumbent, squamiform sete, the legs with similar setee intermixed; the vestiture of the 
under surface sparse. Head rugulosely punctate, arcuately depressed in front, the eyes very large, 
subcontiguous, rounded above, and with flattened facets; rostrum tapering, reaching the front of the 
metasternum, strongly curved, stout, rugosely punctate, carinate, and laterally sulcate at the base, and 
almost smooth thence to the tip, the antenne inserted at about the basal third. Prothorax much 
broader than long, arcuately narrowing from the middle forwards, the sides parallel at the base ; closely, 
rather finely punctate, feebly carinate anteriorly, the interspaces subgranulate. Scutellum smooth, 
* Cryptorhynchus verruca (Fabr.) probably belongs to it. 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 4, October 1905. 4GG 
