ARABIAN HTMENOPTERA. 41 



196. Prosopis nkjritula. Female. — Black, shining, with 

 cinereous hairs. Wings blackish cinereous ; veins black. Length 

 of the body 2f lines. 



The wholly black tibiae distinguish this species from P. annulata 

 and from P. affinis. It is more slender than P. anthracina. 



Mount Sinai. 



197. Prosopis rufocincta. Male. — Black, shining. Fore border 

 of the thorax, femora at the dps and tibi® and tarsi at the base 

 whitish. Abdomen with a red band. Wings cinereous ; veins black. 

 Length of the body 3 hues. 



It may be a variety of P. rubicola. 



Wady Ferran. 



Genus SPHECODES, Latr. 



198. Sphecodes Afrioanus, St. Farg. Hym. 

 Cairo. 



Genus HALICTUS, Latr. 



199. Halictus QtrADRiSTRiQATUS, Latr. Hist. Nat. Ins. xiii. 365. 

 Cairo. 



Inhabits Europe. 



200. Halictus pabvulus. Apis parvula, Fabr. Ent. Syst. Supp 

 277. 



Wady Ferran. 



Inhabits South Europe. 



201. Halictus jucundus, Smith, Cat. Hym. i. 56. 

 Cairo. 



Inhabits West Africa and South Africa. 



202. Halictus determinatus. Female. — Black, with wliitish 

 hairs, thickly and very minutely punctured. Abdomen elliptical, 

 with a reddish band on the hind border of each segment. Tarsi 

 towards the tips and calcaria tawny. Wings cinereous, darker along 

 the exterior border ; veins black ; stigma piceous. Length of the 

 body 4 hues. 



Mount Sinai, 



