from the Island of St. Vincent. 249 



less widely distinct. I believe them to be the insects to which 

 Prof. Lacordaire refers, in his observations under Tribolium 

 {vide * Genera des Coleopteres/ v. 323), where he says : " les col- 

 lections renferment un certain nombre de petits insectes inedits, 

 qui en sont tres-voisins, et qui pourront entrer dans le genre, en 

 modifiant legereraent sa formule." It is quite certain, how- 

 ever, that no modification of the generic formula of Tribolium 

 could possibly be made so as to embrace the species under con- 

 sideration, unless we enlarged it to such an extent as to include 

 the whole group of the Triboliides ; for in their entire structure, 

 no less than in their habits, they are abundantly removed from 

 the Tribolia proper. 



These insects, indeed, would seem to be more or less fossorial, 

 living under sea- weed on sandy shores, or in other salt places, — 

 a mode of life which their largely dilated anterior tibise (accom- 

 panied by a considerable development of the prothorax) would, 

 prima facie, indicate. In this respect, as well as in their more 

 rounded, unemarginated clypeus, and shining, deeply-sculptured 

 bodies, they recede completely from the Tribolia; whilst their 

 prosternal lobe also is thicker, narrower, and somewhat longer 

 than is the case in that genus, their mesosternum is more 

 sharply cut-out (triangularly) in the centre, their mandibles are 

 more shortly bifid (the collateral apical point being so abbreviated 

 that it does not project beyond the base of the true apex, and is 

 therefore invisible when seen only in profile), their mentum is 

 broadly scooped-out in front and their ligula more straightly 

 truncated anteriorly, their outer maxillary lobe is considerably 

 longer, and the inner one shorter, more incurved, and unarmed, 

 and their antennae (which have the basal joint very much longer 

 and more flexuose) are more gradually thickened towards the 

 apex, — the club (if such it may be called) being composed of 

 five (instead of three) articulations. 



28. Pseudostene angusta, n. sp. 



P. lineari-angusta, rufo-picea ; capita dense ruguloso, clypeo ferru- 

 gineo, mox ante oculos subainpliato-rotundato ; prothorace sub- 

 convexo, nitido, sat profunde et confertim punctate, lateribus 

 oblique subrectis ; elytris ad latera valde parallelis, levissime trans- 

 versim rugulosis, obsolete punctulato-striatis, interstitiis minute 

 punctulatis; pedibus piceo-ferrugineis ; antennis pallido-ferrugineis. 



Long. corp. lin. If. 



The present insect is most closely akin to two species* in my 

 possession, one taken by the late Mr. Melly in Egypt, and the 

 other by myself in the island of Lanzarote ; nevertheless the 

 whole three differ from each other in many small characters, 



* The following diagnoses of these two species of Pseudostene will serve 

 Ann. ^ Mag.N.Hist. Sev.3, VoLvii. 17 



