134 DE. J. E. T, AITCHISON ON THE ZOOLOGY OF 



HYMENOPTERA ACULEATA. 



HETEKOGYNA. 

 FOEMICIDi;. 



Eormicin^;. 



1. Oataglyphis viatica, Eabr. 



Formica viatica, Fabr. Mant. Ins. i. p. 308. n. 20 (1787). 



A common species throughout Southern Europe, Northern Africa, and Western Asia. 

 Hab. Hari-rud valley. 



Sphegidj. 



2. Ammophila mandibulata, sp. n. (Plate XIV. fig. 18.) 



Female. Length 18 millim. Black, antennae greyish, head and prothorax above and 

 face shining, finely and thickly punctured ; mandibles very large, spotted with red, sides 

 of prothorax longitudinally striated, with a round bare elevation behind, perhaps 

 surrounded with grey pubescence in fresh specimens ; mesothorax dull, coarsely and 

 thickly punctured ; metathorax longitudinally striated ; scutellum with a depression 

 before the extremity ; petiole about one third the length of the abdomen, smooth and 

 shining, with a red spot at the extremity; abdomen polished, smooth and shining; 

 occiput, cheeks, prothorax and front coxae, femora and tarsi furnished with very long 

 black bristles ; all the coxae with a large white depressed callosity before the extremity ; 

 spines on the tibiae and tarsi short, but numerous ; fore wings fusco-hyaline, hind 

 wings subhyaline. 



Very closely resembles the North -American A. luctuosa, Smith ; but in that species 

 the face is much more coarsely punctured, the white coxal callosities are small or 

 wanting, and the long bristles, which are nearly wanting on the four hind femora of 

 A. mandibulata, are very conspicuous on all the femora. 



Hab. Hari-rud valley. 



Ntssonidj;. 



3. Stizus unifasciatus. 



Stizus unifasciatus, Rad., Fedchenko's Reise, Sphegida, p. 39, pi. v. fig. 3 (1877J. 

 Originally described from Samarcand. 

 Sab. Hari-rud valley. 



4 Stizus terminus, sp. n. (Plate XIV. fig. 17.) 



Female. Length 22 millim. Head above the antennae and behind the eyes entirely 

 black ; scape of antennae, nasus, clypeus, labrum, and inner orbits sulphur-yellow ; 

 antennae (except the yellow scape, and the red second joint), tips of mandibles, and 

 mentum black ; prothorax black, hairy, broadly bordered with yellow behind ; mesothorax 

 black, the sides above, and the mesopleura, and a spot before and behind, yellow ; tegulae 



