822 MR. E. A. ELLIOTT ON THE 



of the hind femora is black all over, but in the other above only. 

 Wings hyaline. 



Length 16 mm.; abdomen 10 mm.; petiole 5| mm.; terebra 

 15 mm. 



Habitat: Solomon's Island, New Hebrides (Westwood) ; 

 Solomon Islands (Woodford). 



The snecimen described by Westwood, now in the British 

 Museiim, was taken during the voyage of H.M.S. ' Herald ' in 

 1866. The abdomen is wanting, but the three-jointed tarsi prove 

 it to be a female. In the same collection is a perfect specimen, 

 taken by C. M. Woodford, probably about 1886, from which the 

 description has been completed. 



The extraordinarily deeply-excised neck of pronotum is ver}?- 

 distinctive of the species ; I know of no other at all like it. 



Mr. T. C. Brues (I, c.) describes a specimen from Wai-ai, 

 Solomon Is., which lie considei'S to be this species. It differs in 

 colour, in the legs being entirely black, except apical half of 

 hind femora and basal constricted part of their tibiae, second 

 flagellar joint rather longer. The peciiliar formation of the neck 

 is not noted, but it is said to be finely trans-rugose, mesonotum 

 irregularly rugose-reticulate in front, smooth behind. Allowing 

 for the personal equation in descriptions, and the common 

 variation in the colour of the legs in insects, I think the specimen 

 described is truly this species. 



Schletterer (p. 123) tentatively synonymizes this species with 

 his D. pallescens from the Philippines ; from it, however, 

 I), scdomonis differs in the above-named formation of the pro- 

 thorax, the proportionate length of the basal antennal joints, and 

 in having bidentate hind femora ; these in D. pallescens are tri- 

 dentate. 



30. CELEBENSIS Szepl. 



Fcenatojncs celebensis Szepl., p. 531, $ . Diastephanus Enderl. 

 (2), p. 475. 



5 . Frons coarsely and indistinctl}^ transrugose ; occiput finely 

 transrugose, with indistinct central impression ; posterior margin 

 of head bordered. Flagellar joints normal. ISTeck elongate, 

 smooth in front, feebly trans-striate behind ; mesonotum and 

 scutellum smooth; mesopleurse smooth, anteriorly rugose-punctate. 

 Median segment cribrate punctate. Petiole finely trans-striate, 

 nearly as long as rest of abdomen. Terebra rather shorter than 

 body, sheaths black. Hind legs with coxse finely transrugose ; 

 femora shining, extremely finely alutaceous, bidentate. 



Black; temples, cheeks, and innei- orbits yellowish; mouth, a 

 median stripe on frons, and base of antenna3 yellow-red : anterior 

 tibiae, basal half of hind tibife, and the tarsi brown-red. Wings 

 hyaline, stigma centrally yellowish, tegulse brownish. 



Length 16 mm. 



