32 Cameron, Hymenoptera Orient alia. 



Wings hyaline, with a faint fuscous tinge. Abdomen as 

 long as the head and thorax united, alutaceous ; the 

 petiole somewhat longer than the second segment, nodose 

 at the apex ; the third and fourth segments shining at the 

 base ; the fifth segment thickly covered, especially towards 

 the apex, with fulvous pubescence, the apex of the seg- 

 ment itself being fulvous; the base of the pygidial area 

 closely rugosely punctured ; the narrowed apex shining, 

 smooth, except for a few indistinct striae ; the sides of the 

 segment fringed with long, stiff, pale fulvous hairs. On the 

 side of the third segment is a large mark broader than 

 long, the base rounded, narrowed in the middle, almost 

 heart-shaped ; on the side of the fourth segment is a more 

 elongated yellow mark ; the outer half broader, and dilated 

 posteriorly ; the mark on the side of the fifth segment 

 is larger, wider, and projecting backwards on the lower 

 side at the base. The ventral surface is sparsely covered 

 with longish fuscous hair. 



Only one species of Crabro is recorded from Ceylon 

 by Col. Bingham, C. palitans Bing., which also is found 

 in North- West India. It is very different from C. taprobance, 

 having the abdomen not petiolated. 



Crabro yerburii, sp. nov. 



Long. 6 mm. 



Hab. Trincomali, Ceylon ( Yerbury). 



Belongs to Bingham's section ''A. b. Petiole short, 

 subpyriform, gradually widened from base to apex." C. 

 odontophora differs from it in the twisted, dilated and, at 

 base, dentate basal joint of anterior tarsi, in the median 

 segment being strongly aciculated ; the hollows at its 

 sides with stout keels. The " enclosed space " on the 

 median segment very smooth, shining and glabrous ; 

 surrounded by a wide, moderately deep, crenulated furrow, 

 and having a similar crenulated furrow down its centre ; 



