132 _ PARNIDA, 
Although this genus approximates to Heterelmis in many points, it appears quite distinct 
in various particulars of structure as well as in appearance. The head is broad, with 
the eyes convex. The thorax with largely developed lateral margin, with a fine line 
or impression running parallel with it. The elytra without raised lines. The maxillary 
palpi are rather largely developed ; the second joint short, about as long as broad at 
the extremity; the third joint shorter and broader, not so long as broad, the terminal 
joint remarkably large, being broader than the preceding joint, but longer than broad ; 
the extremity truncate. The prosternal process is not or only indistinctly margined, 
and is not truncate at the extremity, but distinctly longer in the middle than it 
is at the sides. The mesosternal groove is broad, and in front is limited by two raised 
parallel lines; but it is continued backwards behind these lines as a depression of the 
surface, and nearly attains the metasternum. This latter is even, without raised lines. 
The hind coxe are very widely separated; but there are no raised lines on the first 
ventral segment. 
The form of the apex of the prosternal process, and the more elongate maxillary 
palpi, independent of other characters, are sufficient to differentiate the genus from 
Heterelmis. I believe the body is destitute of the fine pubescence usually found in the 
Elmini; but the condition of the few specimens at my disposal does not allow me to 
feel certain as to this. 
1. Elsianus robustus. (Tab. IV. fig. 11.) 
Suboblongus, nigro-fuscus, subopacus, antennis pedibusque rufis; elytris striatis, corpore superne subtiliter, 
fere eequaliter granulato. 
Long. 12, lat. 2? lin. 
Hab. GuatTEMALA, San Joaquin in Vera Paz (Champion). 
Thorax scarcely narrower than the elytra; the sides slightly curved, the front 
emarginate on each side over the eyes, and thus appearing lobed in the middle; the 
surface not punctate, but evenly covered with distinct raised granules; the lateral 
margin is coarse, and behind projects a little backwards, thus rendering the hind angles 
minutely acute ; parallel with the side is a line or impression, similar rather to what 
exists in Parnus, than to the more definite carina of the Elmini. The elytra are 
marked with five or six regular striaw, extending from base to apex; but the portion 
external to these strize is only very indistinctly striate; at the base the second stria 
diverges outwards, and there is a short stria placed between it and the first ; the strie 
are indistinctly punctate, and the interstices are strewn with fine raised granules. The 
under surface is coarsely and evenly granulate. 
2. Elsianus striatus. 
Suboblongus, nigro-fuscus, subopacus, antennis pedibusque rufis; prothorace lateribus rotundatis; elytris 
striatis ; corpore superne subtiliter, fere equaliter granulato. 
Long. 13, lat. 2 lin. 
