﻿270 [May, 



face more or less strongly carved out, or excavated, anteriorly and at 

 the sides, leaving at tlie middle a more or less cone shaped, outwardly 

 projecting piece (with usually its apex broadly rounded), having 

 somewhat the appearance of a secondary or double chin. 



The type of the genus is the Tenebrio costatus of Gruerin, which I 

 briefly re-characterize (PI. II, fig. 2). 



Hipalmus costatus {Tenebrio), Guerin, Voy. de 1. Coq., Entom., 

 p. 97, Ins. pi. 4, fig. 5 (Zop7wbas sulcipennis), Dej. cat., p. 226. 



Length 8| to 9 lines. — Entirely of a dull black with — on the elytra, a slightly 

 bluish bloom : head very coarsely rugose-punctate : thorax with a few large, 

 scattered punctures, mostly distributed on the disc ; a small fovea at each side, 

 somewhat anteriorly ; another, much stronger and transverse, at the middle, near 

 the base, and one, more rounded, at each side of the latter ; these basal foveas or 

 depressions form between them two short lobes which are squarely truncated 

 behind and within the margin : elytra each with eight well-marked costaa, the 

 alternate ones being more elevated ; the 2nd more especially so at the base, where 

 it is united with the 4th, and also with a short, oblique, sutural one ; the intervals 

 between these costae are concave, and each has a regular row of somewhat trans- 

 verse punctures ; both costaa and intervals are sparingly and minutely punctulate : 

 under-side, legs, antennae, &c, concolorous. 



Hab. Peru. 



Sub-Family CNODALIN^E. 



Nautes* .eneus, n. sp. 



Length 3£ lines. — Entirely of a rich, metallic olive-green ; moderately convex ; 

 head and prothorax sparingly and finely punctured ; the former without any im- 

 pressed lines or foveas on the crown between the eyes ; the latter with two 

 shallow basal foveae, and several others, more obscure, at the sides : scutellum 

 smooth ; elytra finely striated, the striaa faintly and remotely punctured ; the 1st 

 and 9th (which is altogether marginal, and almost lost in the refiexed edges of the 

 elytra) are joined together near the apex ; the 5th and 6th are united at about 

 two-thirds their length, and from the point of union is sent forth a single stria 

 whioh is united to the 2nd, 3rd, and 7th further on, or nearer to the apex ; the 

 4th is a little shortened behind, and the 8th is strongly abbreviated at both ends ; 

 intervals flat and smooth : under-side, legs, and antennas pitchy-black, the latter 

 with a slightly reddish tinge : abdomen longitudinally wrinkled. 



Hab. Nicaragua, Chontales. 



Discovered by Mr. E. Janson, Jun. 



Smaller than N. fervidus (Pascoe, 1. c, p. 476), and without the 

 two well-marked, oblique impressions between the eyes ; the prothorax 

 more abruptly narrowed anteriorly, the sides more strongly margined 

 and thickened at the edge, the punctuation much finer ; the colour 

 quite different, and the whole insect relatively broader and less convex. 



* (Dej.) Pascoe. Journal of Entomology, ii, p. 475. 



