164 MR. CLAUDE MOllLEY ON AFRICAN 



— The peculiar prolongation of the elevated frontal oibits below 

 the ocelli is remarkable. — Taken at Entebbe in Uganda between 

 lOtli and 20th March, 1914, by C. C. Gowdey. 



Otenichneumon. 



The third of the subgenera into which Thomson split the 

 Wesmaelian genus Amhlyteles (Opusc. Entom. xix. 1894, p. 2083). 

 I have already assigned to it one South African species (Ann. 

 S. Air. Mus. XV. 1916, p. 36.5); three of the palfearctic kinds 

 that extend to Algeria fall herein ; and Dr. Roman has recently 

 shown that the Egyptian A. tauricus Kriechb. (Entom. Tidskr. 

 xxxi. 1910, p. 157, c? $ ) is also referable to it. 



1. CASTANOPYGUS, Sp. n. 



A slender and somewhat small, black male with the antenna; 

 (except apices), anterior tibite and femora, face (except its stra- 

 mineous orbits) and clypeus, fulvous ; and the anus from base 

 of fifth segment, crimson ; wings evenly infumate. Head small 

 and transverse, posteriorly obliquely constricted ; frons and face 

 subconfluently punctate, clypeus irregularly punctate, short and 

 impressed in centre of its truncate apex; labrum exserted. 

 Thorax immaculate black, closely punctate and not dull; notnuli 

 deeply impressed ; metathorax convex, with stout carinas ; areola 

 subtriangular, apically truncate, basally constricted and acuminate 

 at postscutellum ; spiracles elonga,te, apopliyses wanting. Scu- 

 tellum deplanate, apically aciculate and latei'ally carinate to 

 centre. Abdomen sublinear and dull with second segment striate; 

 postpetiole abruptly explaiiate, closely aciculate, with spiracles 

 prominent and its apical angles punctate ; gastrocceli deeply 

 impressed and somewhat large ; valvulpe red, extending to apex. 

 Legs slender and black with the front tarsi, tibias, and apical 

 half of femora internally, pale ; tarsi setiferous. Wings small, 

 infumate throughout; tegnlte and stigma black ; areolet exactly 

 pentagonal, broad above; nervelet wanting, lower basal nervure 

 slightly postf ureal. Length, 11-12 mm. c? only. — Closel}' allied 

 in coloration to Avihlyteles castanopygus Steph. — Males wei'e 

 taken on the western foot of the Aberdare Mountains, at an 

 altitude of 8300 feet, on 1st March, 1911, in British E. Africa. 



(Subtribe Heresiarchini. 



The following genera are here grouped under this subtribe in 

 a somewhat different sense from that intended by its erector in 

 Smith's 'Insects of New Jersey,' 1900, p. 567; though hardly 

 from that of Wesmael when erecting the typical genus Ueresiarches 

 (Mem. couron. Acad. Belg. 1859, p. 93), since the latter makes no 

 refei'ence to the shape of the face which, on the contrary, is 

 shown (as figured) to be not transverse. Its metathoracic 

 spiracles are linear, and the restriction of the group in my 

 ' British Ichneumons' of 1903 was for local purposes only. 



