512 CUCUJIDZ. 
Elytra testaceous at the base, infuscate before the tip, which is quite pallid. One 
specimen. 
Closely allied to J. insularis ; distinguished by the coarser punctuation of the head 
and thorax, and the deep fovea on the former. 
4, Inopeplus jugularis, sp. n. (Tab. XVI. fig. 12.) 
Brevis, latus, depressus, nitidus, parce punctatus, niger ; pedibus piceis, tarsis testaceis. 
Long. 24-33 millim. 
Hab. Guaremata, Zapote, Cerro Zunil (Champion); Panama, Bugaba, Volcan de 
Chiriqui (Champion). 
This species is highly remarkable on account of possessing bread jugular pieces that 
are considerably produced and turned upwards so as to be visible from the upperside, 
giving an appearance of the antenna being inserted in a large cavity. The antenne 
are short, the terminal joint pale at the tip. The head is very short and broad, only 
finely and distinctly punctured, the elongate transverse epistomal depression remarkably 
deep and definite. Thorax very short and broad, punctured like the head. Elytra 
impunctate. Four specimens. 
5. Inopeplus concolor, sp. n. 
Fulvo-testaceus, haud latus, depressus, nitidus; capite prothoraceque sat parce et fortiter punctatis ; elytris 
parcissime punctatis. 
Long. 4} millim. 
Hab. Guatemata, Zapote (Champion). 
Antenne rather short. Head very short, not broad; epistomal depression elongate. 
Thorax narrower than the head, very narrow at the base. Elytra sparingly but 
distinctly punctured, about as long as the part of the abdomen they leave uncovered. 
We have received only one specimen of this species; it is remarkable on account 
of its uniform bright colour. The jugular pieces are not so large as they are in 
I. jugularis. The species bears a superficial resemblance to J. preustus, Chevr., but 
that insect does not belong to this section. 
HEMIPEPLUS. 
Hemipeplus, Latreille, Fam. Nat. Regne Anim. p. 898 (1825). 
The position of the very rare insects composing this genus has never received 
adequate consideration. ‘They are not structurally allied to any Cucujide, and, as the 
tarsi are heteromerous in both sexes, there can be little doubt that they should find a 
place among the Heteromera, not here. The genus has no structural relationship of 
any kind with Lwmophleus, indeed the heteromerous tarsi of the males of that genus 
appears to be the only reason for placing Hemipeplus in Cucujide. Its similarity with 
