CANARIAN COLEOPTERA. 231 



in the species now under consideration are longer and slenderer than 

 in the subcenescens (their last five joints being considerably more elon- 

 gated, narrower, and differently shaped), I am compelled to lay greater 

 stress upon certain small additional characters than I should other- 

 wise have done. Apart, therefore, from the antennae of its male sex, 

 the D. dispar may be known from its ally by being a trifle slenderer, 

 blacker, and more pilose ; by its prothorax (particularly in the males) 

 being narrower and less developed, and in the females a little more 

 deeply and less closely punctured ; by its elytra in the latter sex being 

 more rugose ; and by the legs of its males (especially the feet) being, 

 like the antennae, longer and less robust. I have taken it sparingly 

 throughout the district of El Monte, in Grand Canary, in company 

 with the D. subcenescens. 



Genus 150. DOLICHOSOMA. 



Stephens, Man. Brit. Col. 193 (1839). 



365. Dolichosoma Hartungii. 



Dasytes filiformis, Heer, in litt. 



, Hartung, Geolog. Verhdltn. Lanz. tmd Fuert. 140, 141. 



Dolicliosoma Hartimgii, Woll., loc. cit. 446 (1862). 



Habitat Lanzarotam, Fuerteventuram, Canariam et Teneriifam, ad 

 flores tempore vernali hinc inde vulgaris. 



Judging from the description and figure, the present insect is closely 

 allied to the D.])rotensimi, Gene, from Sardinia, though at the same 

 time quite distinct from it specifically in most of its characters. It 

 is apparently altogether darker and more deeply punctured, with its 

 prothorax narrower behind and unehanneled on the disc, and with its 

 entire surface considerably less pUose. The sixth joint of its antennae, 

 from the apex, is perceptibly smaller than either of those which pre- 

 cede and follow it ; but this may very probably be the case in its 

 European representative also, though I do not see any notice of the 

 fact in the generic formula. It is locally rather common, during the 

 spring months, throughout the eastern and central islands of the 

 Group. I have taken it around Haria, and elsewhere, in Lanzarote ; 

 near Oliva, in Fuerteventura ; on the calcareous ground at Tafira, 

 in the region of El Monte, in Grand Canary ; and on the mountains 

 above S'" Cruz, as well as around the Puerto Orotava, in Teneriffe. 

 In Lanzarote and Fuerteventura it was captured likewise by M. Har- 

 tung ; and that it is the insect referred to in his volume under the 

 title of Dasytes filiformis I can state for certain, having received a 

 specimen thus identified from Dr. Heer (who prepared the list). It 



