Mr. R. E. Turner on Fossorial Hymenoptera. 267 
rounded; and the basal fuscous fascia of the fore wing is 
continued along the basal nervure to the costa. The median 
seoment in marpesia is without long hairs. 
Superfamily SPHECOIDEA. 
Subfamily Peweureponin 2. 
Psenuls nigrol/neatus, Cam. 
Mellinus nigrolineatus, Cam. Journ. Str. Br. Roy. Asiat. Soc. xlviii. 
p. 22 (1907). 
Mellinus nigromaculatus, Cam. 1. ce. p. 23. 
Lg ’ i 
These seem to me to be merely slight colour-varieties of 
the same species. A variety in which the yellow markings 
on the mesonotum are narrower than in the typical form 
occurs in Ceylon. 
Hab. Borneo, Kuching (typical) ; Ceylon, Kandy (0. 8S. 
Wickwar). 
Allied to P. pulcherrimus, Bingh., but is a larger and more 
robust species, and has the basal area of the median segment 
much more strongly striated. 
Subfamily Spzzcrvz. 
Sceliphron (Chalybion) sommereni, sp. n. 
Q. Viridi-cyanea ; mandibulis basi, scapo, flagello articulis 5 basali- 
bus, tegulis, pedibusque, coxis exceptis, rufo-ferrugineis; alis 
hyalinis, apice late infumatis, venis ferrugineis; capite thoraceque 
albo-pilosis, 
Long. 17-20 mm. 
?. Clypeus with a row of five small teeth on the apical 
margin, slightly convex; second and third joints of the 
flagellum subequal. Mesonotum rather closely punctured, 
more closely than in chalybeum, Sm., and less deeply grooved 
in the middle than in that species. Otherwise similar to 
chalybeum, Sm. 
Hab. Kabete, near Nairobi, E. Africa (Dr. van Som- 
meren); 3 2 Q. 
Possibly an extreme local variety of S. chalybeum, but the 
very great colour-differences, especially of the legs and wings, 
and the distinetly closer puncturation of the mesonotum, seem 
sufficient to merit specific rank, ‘The colour of the basal an- 
tennal joints in chalybeum appears to be subject to considerable 
variation, 
