Mr. T. V. Wollariton on the Coleoptera of St. Helena. 321 



32. Ihmiciis ivmulus^ n. sp. 



T. cylindricus, nitidus, nigro-piceus, pilisque longiusculis suberectis 

 fulvescentibus parce obsitus ; prothorace amplo, subalutaceo, pos- 

 tice ovidentcr puiictulato, mox ante medium subnodoso-coiivexo, 

 antice dilatato obtuse rotundato nccnon mucroiiibus asperato ; 

 elytris levitcr striato-punctatis punctulis(pie minoribus in intcr- 

 stitiis uniseriatim notatis, ad apiccm retusis, parte perpendiculari 

 dentibus sublateralibus duobus subajcjualibus (sc. superiore ct in- 

 feriore) ac perpaucis lateralibus minutlssimis granuliformibus 

 ut''inque armata ; antennis pedibusque testaceo-ferrugineis. 



Long. Corp. liu. 1^^. 



The single specimen from -whicli the above diagnosis has 

 been drawn out, and which was captured at St. Helena by 

 Mr. Melliss, lias much the general appearance, at first sight, of 

 the Eiu'opean 2\ saxeseni (which occurs likewise in the Azo- 

 rean, Madeiran, and Canarian archipelagos) ; but a closer in- 

 spection will show not only that it is a little larger and more 

 pilose, with its prothorax less alutaceous and more distinctly 

 punctulated behind, but that its elytra are more retuse (or perpen- 

 dicularly truncated) at the apex, and that each of them is armed 

 Avith (in addition to smaller and granuliform ones) two robust 

 acute spines. This latter character, apart from its less shining 

 and more evidently ])unctulatcd prothorax and darker hue, 

 will equally separate it from the T. j^erforanSj a species closely 

 resembling the saxeseni y and which has been fomid in the 

 Madeiran and Cape -Verde archipelagos (where, however, in 

 all probability it has become natiu'alized accidentally through 

 human agencies). What the exact habit of the St. -Helena 

 species may be, I cannot tell ; but, if found in the higher dis- 

 tricts of the island, at a distance from the towns, it is of course 

 possible (though I should scarcely think likely) that it may be 

 truly indigenous. 



Fam. 17. HylesinidsB. 



Genus 20. Hylurgus. 



Latreille, Gen. Crust, et Ins. ii. 274 (1807). 



33. Hylurgus UgnijJerda* . 



Bostrichm ligniperda, Fab., Ent. Syst. i. ii. 307 (1792). 

 Ilijlun/its lii/mpertla, Woll., Col. Atl. 250 (1805). 



As in the Azorean, Madeiran, and Canarian groups, the 

 European JI. lignij)erda appears (judging from examples of it 

 which were captured by Mr. McUiss) to have become natu- 

 ralized at St. Helena ; but as it is an insect which is eminently 

 liable to accidental transmission along with trees of the pine 

 family, its presence in even .«o remote an island may pcriiaps 

 be accounted for. 



[To be Lontiiiued.j 



