'Mr. E. E. Turner on Fossorvd Hymenoptera. 71 



3. Arpacius perkinsi, Turn. 

 Gonjtes iJcrhinsi, Turn. Ann. & Mag. Nat. Hist. (8) x.p. 57 (1912), $. 



As noticed in the description, this is near ci/iafus, but 

 tliere is no orange on the second dorsal segaient and much 

 more on the third. Tliere are two strong spines at the 

 apex of the intermediate tibiae. 



3. Arpactus tarsatiis, Sm. 



Gori/tcs tarsatus, Sm. Cat. Hym. B.M. iv. p. 366 (1856). cS - 



Gonjtes exiinius, Sm. Trans. Ent. Soc. London, (3) i. p. 65 (1862). § . 



As Handlirsch points out, these are undoubtedly sexes of* 

 one species. The cilise on the fourth and fifth ventral seg- 

 ments are well developed ; the apical joint of the antennie 

 is curved; fore tarsi not ciliated; intermediate tibiae with 

 one long apical spur, the second spur more slender and not 

 more than half as long, 



4. Arpactus cygnorum^ Turn. 



Gorytes ci/gnorum, Turn. Proc. Zool Soc. London, p. 500 (1908). J. 



The apical joint of the antennie is not curved ; fore tarsi 

 notciUate; intermediate tibiie with one long apical spine, 

 the second spine very short and slender; hind tibiae with a 

 few spines on the outer margin. The cilise on the ventral 

 segments are not present in tliis species, possibly the long 

 hairs may have been rubbed off. 



In other points the species agrees well with the characters 

 of the group, and is undoubtedly closely related to the other 

 species. 



Arpactus aurantiacus, sp. n. 



S . Niger ; clypeo, antennis, genis, pronoto, callis humeralibus, 

 lateribus dorsnli, mesopleuris antice, tegulis, scutello, post- 

 scutello, segraento mediano, lateribns et linea mediaua nigris, 

 abdomine, segmento primo dorsali apice auguste tertioque 

 dimidio basali nigris, pedibusque aurantiacis; alls flayo-byalinis, 

 venis ferrugineis. 



Long. 17 mm. 



S . Eyes convergent towards the clypeus, separated at 

 the base of the antennae by a distance equal to the length of 

 the second joint of the flagellum, which is about half as long 

 again as the third ; apical joints of the flagellum missing. 

 Posterior ocelli more than half as far again from each other 

 as from the eyes ; front slightly concave, a longitudinui 



