A. TULLGREN, HYMENOPTERA ACULEATA FROM THE CAMEROONS. 443 



stones, even within the houses. The nests are c. 8—10 cm. 

 in length, c. 5 cm. in height and 3—4 cm. in thickness. It 

 consists of a dozen cells for the larvse. The cells are about 

 8 mm. in breadth and c. 30 mm. in length. After the eggs 

 are laid the female puts into the cells a great number of spi- 

 ders, coinmonly about fifteen speciniens in each cell. The 

 spiders which are only paraiyzed, are gradnally consumed by 

 the larves. 



Geographical Distribution. — South-Europe, North-Africa, 

 West-Africa (Cameroon, 1 Gabun etc), German East- 

 Africa. 



Sphex Lin. 



Linné, Systema naturre. Ed. 10. I. 1758. 



Kohl, F. F. Die Hymenopterengruppe der Sphecinen. I. 



Monographie der naturlichen Gattung Sphex Lin. (s. 1.) 

 I & II in Ann. des k. k. naturhist. Hofmnseums Wien, Bd 5, 

 h. 2, 1890, p. 105. 



Sph. tuberculatus Smith. 



= Sph. umbrosus Chr. var. luteifrons JRadoszk. — Kohl, 

 1. c. p. 408. 



= Sph. tuberculatus Smith. — Kohl, Zur Monographie 

 der naturl. Gattung. Sphex Linné. Ann. des k. k. natur- 

 hist. Hofmus. Wien. Bd X, h. 1, 1895, p. 56. 



Two females from Itoki (jan. 1891). 



Geographical Distribution. — North eastern Africa, Sierra 

 Leone and Congo. 



Sph. pulchripennis Mocs. 



Kohl, Zur Monographie der naturl. Gattung Sphex L. 

 1895, p. 63. 



Four females from Bonge (V12 1891) and a single one 

 from Kitta ( 12 A> 1891). 



This species digs vertical mines on ways or on other solid 

 ground. Its preys consist only of grasshoppers. 



1 Kohl, F. F. Zur Hymenopterenfauna Afrikas. Ann. des k. k. natur- 

 hist. Hofmus. Bd 9, h. 3, 1894, p. 342. 



