STUDIES IX THE FOSSORIAL WASPS. 737 



with Anthobosca than Plesia. Although the two genera belong 

 to different subfamilies of the Scoliidae, the females are likely to 

 be confused by a beginner. Cameron places male Scoliidse of the 

 subfamily Anthoboscinae in the Thynnidse, and females of the same 

 group with the Scoliidfe of the subfamily Elidinse. 



*18. Anthobosca donaldsoni Fox. 



Cosila donaldsoni Fox, Proc. Acad. Philadelphia, p. 549 

 (1896), $ . 



5 . Third transverse cubital nervure received close to the apex 

 of the radial cell. Clypeus tridentate on the anterior margin. 

 Head and thorax very coarsely punctured, pronotum and scu- 

 tellum scabrous ; median segment finely striato-punctate, the 

 sides obliquely striated ; abdomen strongly but sparsely punc- 

 tured, sixth dorsal segment striato-punctate : tarsal ungues 

 cleft. 



Black, with greyish pubescence ; two apical abdominal segments 

 red ; calcaria whitish. Wings black, strongly violaceous. 



Length 18 nam. 



Hah. Somaliland. 



I have not seen this species, but the description corresponds 

 almost exactly Avith Elis alicioi described in this jjaper, though 

 the clypeus in that species is not distinctly tridentate. But I do 

 not believe that Fox would have confused the genera. 



19. Anthobosca insularis Sm. (PI. LXXXII. fig. 6 ; 

 PL LXXXIII. fig. 8.) 



Myzine insidaris Sm. Descr. new spec. Hymen, p. 178 

 (1879), $. 



Cosila insidaris Saussure in Grandidier, Hist. Madagascar, xx. 

 p. 231 (1892), $. 



5 . Radial cell subacute at the apex, receiving the third trans- 

 verse cubital nervure very near the apex, in some specimens 

 almost at the apex ; second abscissa of the radius longer than the 

 first, the two combined not quite as long as the third ; first 

 recurrent nervure received at two-fifths from the base of the 

 second cubital cell, second at one-quai-ter from the base of 

 the third cubital cell, which is nearly or quite as long on the 

 radius as on the cubitus. Tarsal ungues bifid ; hind femora 

 very broadly rounded beneath on the apical two- thirds, basal 

 joint of hind tarsi with three long spines beneath. Sliining and 

 sparsely punctured, closely on the front and closely and very 

 finely on the median segment. 



Black, with black pubescence ; calcaria brown. "Wings fiavo- 

 hyaline, nervures ferruginous. 



Lengt.h 23-29 mm. 



Hah. Madagascar. 



The type has a rufous spot in the middle of the first dorsal 

 segment, and obscure reddish shading on the head and thoi^ax. 



