202 P. CAMERON". HYMENOPTERA. 



structural points which differentiate tfre species, that it does not seem possible to identify 

 the species from the descriptions. That is also the opinion of Prof. KRIEGER. cf. Berichten 

 der Naturforsch. Gesell. zu Leipzig, 1898, 65. The collection as a whole is one of the most 

 important that has yet been brought back from New Guinea. The most prominent group in 

 the collection is the Mesostenini, represented by Mesostenus with 6 and Mesostenoidens with 10 

 species, ail différent, so far as I can make out, from the Malay species described by SMITH 

 and TOSQUINET. In the collections of the 2 former expéditions the genus was poorly represented. 

 On the other hand the Cryptini, so numerous in the Nearctic and Palaearctic Régions, has 

 only 1 species, and that belonging to a Hindu-Malay genus. 



The collection is markedly différent from the 2 former lots made by the Dutch 

 Expéditions, not only specifically but generically, this différence being caused, to a certain 

 extent, by the existence of the Australian élément, but also by the présence of Hindu-Malay 

 forms. It is, however, very différent from the Hindu-Malay Hymenopterous Fauna. A compa- 

 rison of the New Guinea list with the species recorded in my papers on the North Bornean 

 Hymenoptera, shows how markedly this is. In North Bornéo, for example, the prédominant 

 genus is the Braconid Ipliiaulax, which contains not only small species but many very large 

 and striking ones. There are probably 200 species of this genus in Bornéo ; in New Guinea, 

 on the other hand, it appears to be rare. In Bornéo the Ichneumonidae are rare compared 

 with the Braconidae ; in New Guinea the reverse is, apparently, the case. 



EVANIIDAE. 



Foenus, F. 



1. Foenus \Gasteruptimi\ pruiniceps sp. n. 

 Heuvel Bivak 750 m., November. 



Black, densely covered with a white sericeous pile, which is very dense on the head 

 in front; the 4 anterior legs, mandibles and palpi red; the hind tarsi white except narrowly 

 at the base; the terebra broadly white at the end; wings hyaline, the nervures and stigma 

 black ; the discoidal cellule divided. Hinder ocelli separated from each other by double the 

 distance they are from the eyes. Malar space as long as the 3 ld antennal joint, which is only 

 a little longer than the 2°d ; the 4* is as long as the preceding 3 united. Ç. 



Length 17 m. m., terebra 23 m. m. 



Middle lobe of mesonotum large, broadly rounded at the apex; the furrows crenulated 

 from shortly beyond the middle. The scutellum becomes gradually narrowed towards the apex, 

 which is transverse and fully half the width of the base. The furrow on the propleurae is 

 wide, curved and regularly striated; the lower half of the meso- and metapleurae irregularly 

 longitudinally striated. The anterior discoidal cellule is twice longer than the hinder one; 

 and is acutely pointed at the apex; the other is as wide as long, the nervures bent forward in 

 front; it is closed behind by a pseudo-nervure. The nervure bounded them at the apex is thickened. 



