536 Mr. R. E. Turner on Fossorial Hymenoplera. 



$ . Head smootli and sinning, broader anteriorly than 

 longj very strongly narrowed posteriorly, only slightly con- 

 vex ; pronotnm with a low carina on the posterior half, as 

 long as broad, a little narrowed posteriorly; scutellum and 

 median segment combined shorter than the pronotum ; 

 thorax and abdomen subopaque, almost smooth, the median 

 segment shining. First dorsal segment rather broadly 

 depressed at the apex; second dorsal segment with three 

 strong transverse carinse, including the raised apical margin ; 

 pygidium very narrow, the sides parallel, narrowly truncate 

 at the apex. Legs slender. 



(J . Head and thorax very finely and closely punctured ; 

 clypeus rather narrowly truncate at the apex ; antennse 

 rather slender, a little longer than the thorax and median 

 segment combined, of about even thickness tliroughout. 

 Scutellum strongly convex, median segment sliining and 

 almost smootli. Abdominal segments rather strongly con- 

 stricted at the base, subopaque and almost smooth. Hypo- 

 pygium produced into a slender acute and somewhat recurved 

 spine, with a small spine on each side at the base. Second 

 abscissa of the radius a little longer than the third ; second 

 recurrent nervure received at one-sixth from the base of the 

 third cubital cell. 



Hab. Aru {Elgner). 



I think that this is distinct from Icevissimus, Sm., which is 

 probably the female of abductor and is a much larger species. 

 From abductor the male differs in the shape of the hypo- 

 pygium, the colour of the legs, and the smaller size. 



Hemithynnus tillyardi, sp. n. 



5. Nigra, sparsissime punctata; fronte supra antennas, macula 

 poue oculos, angulis posterioribus capitis, vertice lineis duabus 

 postice convergentibus, macula parva froiitali, pronoto margini- 

 bus lateralibus, margine postico late interrupto, et macula parva 

 mediali marginis antici, scutello postice, segmentis dorsalibus 

 primo secundoque fascia transversa intcrrupta, tertio quartoque 

 fascia late iuterrupta., quinto macula utriuque segmentisque 

 ventralibus 2-4 macula laterali utrinque flavis ; segmento dorsali 

 secundo carinis transversis 8. 



J . Niger, albo-pilosus ; mandibulis, clypeo apice lateribusque, 

 vertice macula parva utrinque, pronoto linea arcuata interrupta, 

 mesopleuris macula parva, segmentis dorsalibus 1-6 ventrali- 

 busque 2-5 macula laterali utrinque flavis; alis pallide flavo- 

 hyalinis, venis fuscis. 

 Long., 2 18, 6 23 mm. . 



'i . Clypeus with a carina not reaching the apex, which is 



