APPENDIX. 63 



corded in my diagnosis, the T. Crotchii is at once remarkable (in the 

 present genus) for its comparatively small size and its shining, in- 

 tensely black surface, for its head and pro thorax being, both of 

 them, short and transverse (the latter of which is straightly trun- 

 cated at the base, with the hinder angles sharply defined and ob- 

 tuse and the anterior ones extremely rounded and blunt), and for its 

 elytra being likewise very straight along its front margin, and deeply 

 punctate-striate. 



Fam. HELOPID^!. 



Genus HELOPS. 

 Fabricius, Syst. Ent. 257 (1775). 



Helops Marseulii, n. sp. 



//. ater, nitidus ; oculis angustulis ; capite prothoraceque sat pro- 

 funde et dense punctatis, hoc convexo, ad latera rotundato, ante 

 angulos posticos vix subsinuato ; elytris subellipticis, argute sub- 

 striato-punctatis (punctis inter se valde distinctis), in interstitiis 

 minutissime, levissime et parce punctulatis (nee tuberculatis. nee 

 transversim rugulosis); antennis pedibusque dilutioribus. Long. 

 corp. lin. 5|. 



Habitat Teneriffam ?, a cl. de Marseul communicatus ; certe in in- 

 sulis Canariensibus captus. 



A single example of this Helops, from which the above diagnosis is 

 drawn-out, has been communicated by M. de Marseul ; and although 

 very unwilling to erect an additional species for its reception, I feel 

 nevertheless that I have no option but to do so, seeing that I cannot 

 refer it to any member of the genus enumerated in this Catalogue. 

 It has the label " Teneriffe " appended to it ; and whilst I cannot 

 vouch for the accuracy of this habitat (having already detected so 

 many topographical errors amongst the insects which have been 

 transmitted to me from the same source), I nevertheless must add 

 that that species has so decided an affinity with the H. altivagans 

 and elliptipennis of the higher districts of that island that I believe 

 it to be correct. 



The H. Marseulii would seem to differ from its two allies just 

 mentioned in its more highly polished surface (even the elytra being 

 exceedingly shining), its more intensely black hue, and in its com- 

 paratively coarsely punctured striae (the punctures of which, although 

 not very large, are deep and remarkably well defined). Its interstices 

 are most minutely and sparingly punctulated (the punctules being 



