1874.1 171 



(which I have much pleasure iu naming after its discoverer), the pro- 

 thoracic disc of which and a narrow, transverse, eub-deutato fascia 

 across the middle of its elytra arc more or loss blackened, in conjunc- 

 tion with its strongly punctured and pubescent surface, will at once 

 serve to distinguish it. 



Fam. TELMATOPHILID^. 



Genus ThallESTUS, Wollaston, Trans. Ent. Soc. Lond., i. 153 (1862). 



Three small and very distinct species, which were obtained by 

 Mr. Lewis, appear to me to belong to my genus Thallesttts, which 

 infests the dead stems of the Euphorlics in the Canarian archipelago ; 

 or, at any rate, I am not able to detect any characters of sufficient 

 importance to warrant their separation into a distinct group. Indeed, 

 ThalJestus itself is very closely related to Di2)liyllus, from which it 

 seems mainly to differ in its prothorax having its edges much more 

 obsoletely crenulated, and the second (or inner) costa obsolete. In 

 both genera the antennal club is abrupt and biarticulate, the body 

 pilose, and the structure of the feet nearly similar ; but the Japanese 

 species are on a smaller scale than the Atlantic ones. 



TnALLESTUS TIinOSCOIDES, n. Sp. 



T. elliptico-ohlongus, ferrugineus, dense cinereo-puhescens ; prothorace sat pro- 

 funde punctata, lineii suh-marginali a marjine antice et postice suh-cequaliter rcmotd ; 

 clytris etriato-punctatis, concolorihus ; antennis pedAhusque infuscate testaceis. 



Long. corp. lin. circa f . 



The rather less coarsely sculptured, concolorous surface, and com- 

 paratively pale, ferruginous hue, of the present ThalJestus (in which 

 respect, despite its very much smaller size, it approaches the Canarian 

 T. typhceoides and suhclUpticus), will readily distinguish it fom the two 

 following members of the group. 



TUALLESTUS SUFPUSUa, 11. Sp. 



T. ohlongus, angustulus, piceo-niger, dense cinereo-pubescens ; prothorace sat 

 profunde punctato, lined suh-marginali a margine antice et postice suh-ccqu^liter rc- 

 motd; elytris striato-punctatis, plus minus (2')r(Bsertiin versus huincros et postice) 

 obscure rufo-suffusis ; antennis pedibusque infuscate testaceis, femorihus tibiisque paulo 

 obscurioribus. ^ Long. corp. lin. vi£ J. 



This species is a trifle narrower and more parallel than either of 

 the others, particularly the T. riifupictus ; and its colour is quite as 

 dark as that of the latter, with the rufescent portions of the elytra 

 (towards the shoulders and apex) much duller and more suffused, and 

 therefore much less defined. As in the T. throscoides, its pubescence 

 is much shorter, and less erect, than that of the rvfopicias. 



