AMPHICRANUS. 293 
than broad, concave internally, rather dull, with scattered shortly-piliferous punctures. Underside 
fuscous. Legs pale testaceous, the knees and tibial teeth infuscate. 
Hab. Mexico, Chilpancingo in Guerrero (H. H. Smith). 
One example. Allied to Amphicranus bipunctatus, Kichh., from Colombia. The 
latter is not more than half the size of A. torneutes; it has two well-marked spots 
close together on the disc of the prothorax, and the basal half of the elytra bright 
testaceous; the elytra are less produced, and the inner face of the apical process bears 
a strong acute spine opposite the inclined angle of its border *, 
5. Amphicranus brevipennis, sp.n. (Tab. IX. figg. 9; Ia, apex of elytra.) 
Cylindricus, subopacus, niger, antennis pedibusque ferrugineis ; prothorace elongato, ad apicem obtuse rotun- 
dato, supra antice fortiter convexe declivi et lineis rugarum concentricis asperato ; elytris prothorace vix 
longioribus, ad apicem explanatis, haud productis, punctatis, mox ante medium oblique declivibus, retusis, 
declivitate preeter suturam utrinque conice elevata, ambitu per totum valde elevato in singulo elytro ante 
medium dentato, subtus ad suturam breviter angustissime emarginato. 
Long. 3°6 millim.; lat. 1:5 millim. 
Cylindrical, somewhat dull, black. Head retracted in the type; antenne ferruginous, the club infuscate, 
large, ovoid, the lower border rather strongly convex, the upper border nearly straight towards the apex, 
surface entirely dull, shortly pubescent, the sutures subtransverse. Prothorax nearly one-half longer than 
broad, obtusely rounded at apex, the sides parallel behind the anterior third, the hind angles subrectangular, 
the basal margin subtruncate ; surface strongly and convexly declivous for its anterior third and asperate 
with concentric lines of elevated ruge, behind moderately shining, sparsely punctured, subcylindrical, 
somewhat depressed in the middle, with a slight transverse elevation at the posterior third, behind which 
it is subasperate with fine transverse ruge. Scutellum subtransverse, rounded, shining. Elytra scarcely 
as wide as the prothorax and about as long, truncate at base, the humeral angles subrectangular, slightly 
rounded, the sides subparallel, apices explanate and not produced ; surface cylindrical, obliquely retuse from 
before the middle to the apex, and ampliated round the margins of the declivity, shining, punctured in 
irregular rows, and with fine transverse wrinkles ; declivity oval, shining, strongly and densely punctured, 
hollowed laterally, and elevated in the middle into a double cone, its apices formed by the everted sutural 
horders, the side-margins strongly elevated and shining throughout, produced on each side before the 
middle into a blunt tooth and explanate posteriorly ; apex of the suture narrowly dehiscent. Underside 
piceous-black ; prosternum very short before the anterior cox and not elevated or produced. Legs 
testaceous-brown. 
Hab. Guatemata, San Isidro (Champion). 
One example. The absence of the terminal elytral processes and sutural emargina- 
* The following species is allied to A. torneutes and A. bipunctatus :— 
Amphicranus schaufussi, sp. n. 
A. torneuti simillimus ; differt statura majore, colore piceo-nigro, antennis (clava excepta) pedibusque ferru- 
gineis ; prothoracis margine apicali medio subangulato, dorso postice subtilius punctulato; dente in 
margine superiore processus apicalis validiore, processu ipso breviore fere eeque lato quam longo. 
Long. 8°5 millim. 
Hab. VENEZUELA (in coll. Schaufuss). 
The differences are sufficiently indicated above. If the apical process be defined by a line transverse to the 
extremity of the suture, it will be seen to be about as long as broad in this species, and more broadly rounded 
at the tip, whereas in A. torneutes it is considerably longer than broad. 
