530 



Transactions of the Society. 



The sides of the sixth to ninth abdominal segments are acute 

 in the males in A. tumida, A. turgida, A. isomorpha, A. owenii, 

 and A. incisa, and A. silvestrii ; they are also carinulate in all 

 these except A. turgida. The sides are rounded in A. pagana 

 and A. queer ens. 



The ninth sternite of the male affords useful characters ; it is 

 sharply excised in A. incisa ; it is more or less truncate, with con- 

 verging borders, in A. silvestrii, A. pagana, and A. tumida ; it is 

 broadly rounded in A. turgida, and broad, with a sharp point, in 

 A. owenii. 



A. atra Bor. is not known to me. 



Fig. 59. — Anisolabis angulifera 

 Dobrn, 3 . Apex of abdo- 

 men. 



Fig. 60. — Anisolabis quserens Burr, <J . 

 Apex of abdomen (lateral and 

 ventral view). 



It is not yet certain to which form we are to refer A. pluto 

 Eehn, and A. angulifera Dohrn (fig. 59) ; the former is a smooth 

 species, and might be the female of A. quserens or A. pagana ; the 

 type seems to be a little too big for A. tumida. 



Anisolabis quserens Burr sp. n. (Fig. 60.) 



Very close to A. turgida Burr ; differs in the absence of 

 tubercles on the tenth tergite of the male, and in the rounded sides 

 of the sixth to ninth segments of the abdomen of the male ; the 

 lateral keels of the tenth tergite are a little more acute. 



Male. — Length of body, 11 mm. ; ditto forceps, 2 • 25 mm. 



Range. — West Africa. — Congo, Mundane, 1 male (Conradt, in 

 Berlin Museum). 



Genitalia not yet observed. 



