ARABIAN HYMENOPTEBA. 19 



89. Ammophila areolata, Male. — Black. Head and thorax 

 minutely punctured, clothed with black hairs. Head rather broader 

 than the thorax. Metathorax much developed. Petiole slender, 

 about half the length of the metathorax. Abdomen elongate-elliptical, 

 smooth, shining, as long as the thorax, exclusive of the petiole. 

 Wings smoky ; veins black. Fore wings longer than the head, 

 thorax and petiole together ; some of the areolets with paler disks. 

 Length of the body 6^ lines. 



Pharaoh's Baths. 



Genus PELOPCEUS, Latr. 



90. Pelopceus spirifex. Sphex spirifex, Linn. Syst. Nat. i. 943. 

 Cairo. 



Inhabits South Europe. 



91. Pelopceus violaceus. Sphex violacea, Fab7: Ent. Syst. ii 

 201. 



Massowah. Harkeko. Wady Genueh. Wady Ferran. Mount 

 Sinai. 



Inhabits Asia Minor. 



Genus SPHEX, Linn. 



92. Sphex argentata, Dahlb. Hym. Eur. i. 25 

 Dahleck. Tajura. 



Inhabits Europe, Africa, Asia and North America. 



93. Sphex argentifera. Male. — Black, stout, with cinereous 

 tomentum. Head a little broader than the thorax, with silvery 

 hairs behind ; front with silvery tomentum. Metathorax with silvery 

 tomentum and thickly clothed with silvery hairs. Petiole slender, 

 silvery, not more than half the length of the metathorax. Abdomen 

 elliptical, as long as the thorax, exclusive of the petiole ; first and 

 second segments especially tomentose. Wings cinereous; veins 

 black. Fore wings with blackisli tips, much shorter than the body. 

 Length of the body 10 lines. 



Closely allied to A. argentata, but the metathorax is more densely 

 clothed with white hairs. 



Akeek. 



