1910. 1 103 



26. Teiiipora rugosely punctured but ivith a pair of shining impunctate sx>ots 



(in some lig-hts very conspicuous, in others quite invisible!) adjacent to 

 the furrows which bound the vertical area laterally 27 . 



— Tempora without definite impunctate spots situated as above described. . .29. 



27. Vertex convex ; the shining spots on the tempora bounded only liy a 



simply punctured surface (without any definite raised margin or ridge- 

 like elevation). Antenna? normal, more or less setiform and slender in 

 both sexes, in the <? about % of the length of the whole body, shorter in 

 the ? . Thorax covered with fine, but distinct regular and pretty deep 

 piinctures. Cenchri large and clear white. Wings ample, very clear and 

 with a pecvUiar whiteness of tint (= leucopterus, Zadd.), their nervures 

 apt to become very pale, and the stigma (usually, if not always ?) pale 

 below but darker above. The "^ is recognisable at once by the extreme 

 dilatation of its saw-sheath (viewed from above) from base to apex ; its 

 breadth at the latter point is almost or quite equal to its whole visible 

 length ! Abdomen above finely aciculated on all the segments after the 

 propodeum, so that it is only moderately shining ...picipes, Kl. 



(= intermedius, C. 



= seneus, C. in part ?) 



— Vertex flat; each of the impunctate spots adjoining it has its margin 



raised into a sort of vague ridge or carina which runs diagonally up to 

 the nearest ocellus. Puncturation of thorax above feeble, shallow and 

 irregular. Basal segments of abdomen almost without visible sculpture, 

 exceedingly smooth and shining 28. 



28. ? with short antenna? whose structure is pecviliar and characteristic. 



Joint 3 is considerably longer and somewhat slenderer than those 

 following. The intermediate joints, especially 5 and 6, are very short 

 and broad— about half as broad as long ! 7, 8, and 9 are each about as 

 long as 6, but become successively a little narrower, and 9 tapers very 

 gently to its apex. The wings are not white as in picipes, but seem to 

 vary in clearness. The saw-sheath is normal (thickest before the apex, 

 and not paradoxically dilated as in picipes), but the saw itself is most 

 peculiar — utterly ^^nlike that of any other black Dolerus, and more 

 resembling those of certain species with red abdomen (especially 

 xriceps) Length about 9 mm. Thorax and abdomen broad (the former 

 looks a little broader than the head) * tinctipennis, C. ? . 



— S with unusually short and stout antennae, about half as long as the body, 



but the joints successively becoming very giadually shorter and thinner 

 from joints 3 onwards. This g agrees with thictipeiinis in the shortness 

 of its antenna? (though not in the details of their structure) ; in size 

 (long 9 mm.) and stoutness of build ; in the brilliant (almost sculptiu-e- 

 less) basal segments of the abdomen ; in the shining spaces and vague 

 ridges on the tempora adjoining the vertical area ; and in the feeble. 



* I cannot altogether endorse Mr. Cameron's description of the antennae. (In the type, 

 which is carded, they are somewhat unnaturaUy arranged, and difficult to examine !) I have 

 failed also to recognise the iieculiarities mentioned by the author about the unequally intuscated 

 wings ; and in another specimen which belongs (1 am satisfied) to the same species, that 

 character is not to be found. 



I 2 



