new Species of Diploptera. 99 



collection of Hymenoptera made by Escalera iu S.W. Persia 

 is of much interest, since it adds considerably to our know- 

 ledge of the distribution of the genus. 



The measurements of length, as on previous occasions, 

 have been taken from the front of the head to the apical 

 margin of the second abdominal segment, unless special 

 mention is made to the contrary. All the types are in the 

 National Collection. 



Eumenidffl, Westwood. 



Pterochilus, Klug. 



Pterochilus korbi, Schulz. 



Pterochilus korbi, Schulz, Hymenopteren-Studien, pp. 48-52 (1905). 

 Pterochilus aterrimus, E. Sauuders, Trans. Ent. Soc. Lond. p. 403 

 (1905). 



A comparison between the types of these two species 

 proves them to be identical. The locality of capture for 

 both is Biskra. B. korbi has priority of publication by a 

 few months, although the descriptions of both were published 

 in the same year. 



VespidsB, Latr. 



Belonogasler buyssoni, sp. n. 



B. pusiUo similis, sed facie omnino ferrugineo, tarsisque nigris. 



? . Ferruginous ; antennae, mesonotura, and segments 2-6 

 of the abdomen blackish ; tergites of segments 2, 3, 4 of abdo- 

 men with two whitish-yellow oval marks on the latero-apical 

 margin, the marks on segment 2 being larger than those on 

 segment 3, and the latter larger than those on segment 4. 

 Femora obscure, tibise and tarsi black. Head and clypeus 

 uormal, the latter sharply pointed. Antennae short and 

 slender. Wings hyaline, somewhat cloudy towards the apex, 

 and golden-yellow along the costa. Stigma golden-yellow. 

 Abdomen with the petiole long and slender, longer than the 

 thorax ; abdominal segment 2 with a long petiole and 

 widening gradually towards the posterior end. Pubescence 

 on thorax short, thick, whitish yellow. 



Total length 20 mm. 



2 ?. 



Hab. Igauga Busoga, S. Nigeria (/. /. Simpson). Col- 

 lected for the Entomological Research Committee (Tropical 

 Africa), 29. iii. 1909. 



