511 



At the meeting of the Society held on 8th November 1916, Professor 

 M. N. Rimsky-Korsakov read a paper on Russian aquatic Hymenoptera. 

 The species dealt with included : the Braconid, Ademon nmtuator, 

 Nees, which was reared from Hydrellia sp. ; Caraphractus cinctus, 

 Walker, previously recorded as Anaphes cinctus, Hal. [see this Review, 

 Ser. A, V, p. 297] ; Prestwichia solitaria, Ruschka, from eggs of Lestes, 

 Aeschna and other dragon-flies, as well as from those of Dytiscidae ; 

 Prestwichia aquatica, Lubb., the females of which oviposited in the 

 laboratory in eggs of Dytiscidae, in which they were able to breed, 

 although these already contained mature larvae of Caraphractus 

 cinctus ; and the Eulophid, Mesiocharis sp., reared from eggs of 

 Dytiscus. 



RiMSKY-KoRSAKov (M.). BionornMecKifl Ha5nH)fleHifl Haflij boahwivim 

 nepenOHMaTOKpbmblWIM. [Biological Observations on aquatic 

 Hymenoptera.] — « PyCCKOe 3HT0M0J10rM4eCK0e 0503ptHiQ.» 



[Revue Russe d'Entomologie], Petroarad, xvi, no. 3-4, 14th May 

 1917, pp. 209-225. [Received ] 2th"September 1917.] 



Much of the information in this paper has been given in a previous 

 article [see this Review, Ser. A, v, p. 297]. Some account is given of 

 the Braconid, Chaenusa conjungens, Nees, bred by the author from 

 the puparia of a species of Hydrellia, probably H. mutata, Zett., of 

 which not less than 20 per cent, were thus parasitised. 



Berger(V.M.). Kopotflbi lOwHO-yccypiMCHaro Kpaa. [The Scolytids 

 of the South-Ussurian Province.]— « PycCHOe 3HT0M0J10rMMeCK0e 

 0003p'feHie.» [Revue Russe d'Entomologie]. PctrognuL xvi, 

 no. 3-4, 14th Mav 1917, pp. 226-248. [Received 12th September 

 1917.] 



This is a first instalment of the materials collected by the author in 

 the northern environs of Vladivostok. 



The species described are : — Cnjphalus scopiger, sp. n., very common 

 in Ussuria in dying branches of Juglans inandshurica ; C. redikorzevi, 

 sp. n., in Abies holo])hylla ; C. carpini, sp. n., mining the bast of 

 Carjnnus cordata ; Ernojyorus {Procrypihcdus) j'raxini, sp. n., in small 

 branches of Fraxinus mandshurica, the entrance-burrow leading to a 

 chamber from which several brood-galleries radiate ; Enoporicus 

 spessivtzevi, gen. et sp. n., very similar to the Mexican Ernojwrides 

 jalappae, Letzn., and found in company with the previous species ; 

 Ernoporus tiliae, Panz., in Tilia amurensis ; and Glyptoderes {Trypo- 

 jihloeus) granulatus, Ratz., in Popndus tremula. 



Hylesinus cholodkovskyi, sp. n., lives under the bark of old ash trees 

 (Fraxinus mandshurica). In both cases when this beetle was found, 

 its mines were of a peculiar tj^pe ; the adults bore short, transverse 

 brood-galleries and oviposit on both sides of the gallery in egg-cells 

 prepared by them ; the larvae bore long wave-hke mines, but always 

 in the direction opposite to the movement of the hands of a clock ; 

 the larvae that began to bore in the other direction perished. Pupation 

 takes place in the centre of the bark. 



