142 



witli the description of tenuis though there are definite strong 

 hair patches on the lateral margins of tergites 1-3 and the 

 length is 5 mm. or a little more. The male agrees well with 

 the S described as the S of atriceps. Some of the males 

 have the snpraclypeal area dark except a narrow line along 

 the anterior margin. These are similar to the male described 

 as tenuis S and belong with the others as proved bv the stndy 

 of the genitalia. After carefnlly reading Cameron's descrip- 

 tions of Prosopis curvicarinata and robcrtiana I am inclined to 

 believe that both of them refer to the same species and that 

 the material compared as curvicarinata with rohertiana was 

 some other species. The species is apparently the same as ten- 

 uis Alfken, Imt only the examination of the types conld remove 

 all uncertainty — if it conld be ascertained which is Cameron's 

 true type. 



The differences of venation mentioned by Cameron are of 

 no importance since I have found the same difference in the 

 venation of males of this species ascertained to l)e the same by 

 the examination of the genitalia. 



Hylaeus (Deranchylaeus) Dregei (Strand). 



Prosopis dregei Strand. 



Soc. Ent. 27:27 $ Cape Colony, So. Afr. 1912. 



The 2 previously undescribed is perhaps sufficiently differentiated in 

 the table. The ist and 2nd tergites bear apical lateral white hair patches. 

 Length 6 mm. ; wing 4.5 mm. 



$ Seventh sternite with the lateral spines very strongly developed 

 on the sides of the middle piece and the posterior (apical) margin of 

 the basal lobes, the apical lobes flaplike, elongate, membraneous. 



Median process of 8th sternite elongate (somewhat similar that of 

 Hylaeus nipponicus but not so acute nor so strongly chitinized), about 

 as long as the width of the basal part on either side. The sides of the 

 basal part in a straight line with each other. 



Edeagus with the stipites about as long as the sagittae. 



One 2 and ^ $ $ collected at Cape Town, Jan.-Apr, 1915 

 {Bridwell). 



