Species of the Genus Ammophila [Kirhy). 69 



The species comes very near Heydeni ; but, apart from 

 having the posterior femora and tibiae largely red, the 

 wings are clearer, the strigge of the mesonotum less strong 

 and tending to become obsolete on the centre of its disk, the 

 labrum — which is usually (perhaps always?) black in Heydeni 

 — and fully half the mandibles bright red, the female tarsal 

 pecten pale and thin, and the clypeus not in the least emar- 

 ginate at the apex centrally. The male genitalia seem to me 

 formed much as in Heydeni^ certainly not as in poecilocnemis 

 described above. The apex of the abdomen has a decidedly 

 blacker tinge than in the latter species, where it is almost as 

 brightly blue as in nasuta. 



8. Ammophila albutomentosa^ sp. n. 



Bicolor, capita et thorace nigris, abdomine pedibusque maximam 

 partem pallide rufis. Mandibulse praeter apices nigros, clypei 

 apex, scapus, alarum tegulse cum venis (basalibus saltem) rut'a. 

 Abdomen segmentis duobus basalibus pedumque postieorum basi- 

 bus anguste nigro-lineatis, apice in cS immaculate, in $ superne 

 nigro. Caput (praeter areolam nudam extra utrumque ocellum 

 posticum bene deiinitam) thoraxque totus dense argenteo-tomen- 

 tosa ita ut vix aut sculptura aut integumenti color appareat. 

 Abdomen cum pedibus plus minusve cano-pruinosum, apice medio- 

 criter pallido-piloso. Tempora albo-fimbriata. Alse fere hyalinse. 

 Antennae tenues. Petiolus segmento dorsali piimo circiter quinta 

 parte longior. Clypei apex nonnihil emarginatus. 



Long. circ. 20 mill. 



The male and female described above have every appear- 

 ance of belonging to the same species, a very beautiful one, 

 and quite distinct from anything known to me in nature or 

 from descriptions. My specimen was taken at tlie foot of the 

 " Montague de sable," Mr. Eaton's " on the sandhill nearest 

 the baths and tramway at llammam-es-Salahin," i. e. prac- 

 tically on the same ground. 



The silvery clothing of the body is very thick and con- 

 spicuous, much more so than in Heydeni &c. It is inter- 

 rupted in both sexes on the vertex by an exactly similar naked 

 space adjacent on each side to the posterior pair of ocelli, so 

 definite and symmetrical that 1 think it is probably a constant 

 character. As compared with Heydeni tlie present species 

 seems to be smaller and more slender, with a slightly longer 

 petiole, thinner antennee, and clearer wings. The piothorax 

 is of the usual shape ; otherwise the species somewhat re- 

 sembles that next following. 



Biskra. One male (HI v. '98, Morice)^ one female (26 iv. 

 '97, Eaton). 



