MICROXYPTERUS.—DERCYNUS. 501 
in front, feebly bisinuate at the base, without distinct ocular lobes; densely punctate. Elytra convex, 
ovate, about one-third wider than the prothorax, compressed at the sides, rapidly narrowing from the 
base; punctate-striate, the interstices punctulate and almost flat. Ventral segments closely punctate. 
Length 3, breadth 11 millim. 
Hab. Panama, Bugaba (Champion). 
One specimen. The vestiture of the elytra exterior to the posteriorly-widened 
sutural stripe is not sufficiently dense to hide the sculpture. 
2. Microxypterus binotatus, sp.n. (Tab. XXIV. fig. 22.) 
Oblong-ovate, narrow, shining, black or piceous, the antenna, rostrum, tibie, and tarsi more or less ferruginous, 
the elytra rufo-piceous or ferruginous, with a large black patch on each side ; thickly clothed with 
brownish-white or ochreous scales, the lateral patches of the elytra almost bare; the elytral interstices 
each with a scattered series of long, erect, blunt sete, and the prothorax also shortly setose ; the legs 
squamose and setose. Head densely punctate, the eyes large, but well-separated ; rostrum widened 
at the base, rugulosely punctate and squamose to near the tip in the ¢, rugulose and carinate at the base, 
and sparsely punctate towards the apex, in the 9 ; joint 2 of the funiculus a little shorter than 1. 
Prothorax slightly broader than long, rounded at the sides, narrowed and feebly constricted in front, 
bisinuate at the base; closely punctate. Elytra shaped and sculptured as in 0. suturalis. 
Length 24-3, breadth 15-13 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Three specimens. A fourth, from San Juan in Vera Paz, seems also to belong here ; 
but it has the eyes larger and almost contiguous, and the anterior femora unarmed. 
In this insect the elytra have a common, broad, densely squamose space running down 
their entire length, extending outwards at the base, leaving a large almost bare patch 
at the sides. 
DERCYNUS, gen. nov. 
Rostrum stout, curved, triangularly dilated at the base, the antenne inserted behind the middle, the funiculu 
7-jointed, the club ovate, with distinct sutures ; eyes large, depressed, well-separated ; prothorax very 
broad, transverse, bisinuate at the base, with feebly-developed ocular lobes ; scutellum not visible ; elytra 
broad, much wider than the prothorax, with ten rows of punctures; mesosternum prominent, arcuate- 
emarginate in front; metasternum very short, the episterna not visible; intercoxal process of the 
abdomen broadly truncate in front ; ventral segments 2-4 equal in length, the sutures straight; femora 
very stout, subclavate, deeply excavate before the apex, and also feebly dentate and sulcate beneath ; 
tibis short, broad, dilated from near the base, unguiculate at the outer apical angle; tarsi short, stout, 
joint 3 bilobed, 4 slender, the claws very minute and approximate ; body subovate, broad, densely 
squamose. 
The single species from which the above characters are taken is one of the numerous 
Tropical-American forms nearly related to Acalles, but which cannot be included in 
that genus. ‘The depressed eyes, the very stout, short legs, the minute, approximate 
tarsal claws, the truncate intercoxal process of the abdomen, the broad form, &c., 
distinguish it from Oxypterus and other allied American genera. It is somewhat 
remarkable that an insect with such stout legs should have the tarsal claws so minute, 
