ENTOMOLOGY HYMENOPTEUA. 365 



concerning the publication of new species, if followed, would tend to 

 increase the inconvenience under which Entomology labours, of a dis- 

 cordant and undigested heap of synonyms. This consideration may, perhaps, 

 justify a rather closer criticism than we should otherwise be inclined to 

 exercise upon the systematical notices which have been but the recreations 

 interspersed among official duties and diligent observations in Physiology. 

 As the work is not so accessible to English as to German readers, it may be 

 well to go a little more into detail. 



Of new species there are described under Ichneumon 10, Tryphon 4, Cri/p- 

 tns 3, Hemiteles 4, PezomacJms 1, Mesochorm 4, (he observes that this genus 

 has more affinity to the group of Ophiones than of Crypti,) Glypta 1, Poly- 

 spldnda 2, Pimpla 6, Campoplex 7, Anomalon 5, Opldon 1. Of Exochus it 

 is remarked that it is related more nearly to Ichneumon than to Tryphou. 

 The author has not been able to discover any external character by which to 

 separate from the rest the group of Tryphous in which the females bear 

 their bunch of eggs about under the end of the abdomen ; and, accordingly, 

 he has rejected the genus Polyblastus, Hart. (Wiegm. Arch. 1837, i, 

 155,) remarking that the character assigned to it, of pectinated claws, is 

 found also in species of the ordinary Tryphon, and of Exentems, Hart. 

 Exenterus adspemis and oriohis, Hart., are merely varieties of Ex. margi- 

 natorius, F., obtained promiscuously with it out of the cocoons of Lophyrus 

 pini. 



Of the Braconini he describes as new species, of Bracon 6 (of which the 

 first, Br. incompletus, can hardly belong to this genus), Spathius 2, Hicrodus 

 3, Microgaster 15, Chelonus 1, Alysiu 2 (but the species figured, A. rubriceps, 

 is an Opius, Wesm., and the two species of Aphidius described should have 

 come in here, see below), Rogas (= Macrocentrus, Curt.) 2, Aspic/onus 1 

 (it is rather a Calyptus, Hal, = = Taphaus, Wesm.), Brachistes 5 (but the 

 genus Eitbadizon is included here), Perilitm 6 ; and lastly, as Aphidii, two 

 species belonging to the genus Alysia, and, like most of their congeners, 

 parasitic upon Diptera. The species figured, A. flavipes, for which the 

 generic name Ortliostigma is suggested, is nearly related to Al. ctpii, figured 

 by Curtis. (Brit. Ent. pi. 141.)] 



De Romand (Guer. Mag. Zool. Ins. pi. 137) has figured a Bracon from 

 Manilla, which he identifies with Br. lauceolator, F., and would correct the 

 habitat, South America, given by Fabricius, accordingly. The figure and 

 description agree very well with the Fabrician species, only the length of 

 the borer is doubtful, and it is wanting in the specimen in our museum, which 

 Klug received from Kolsmanu, of Copenhagen, as a South American insect 

 unnamed. Supposing the two to be of the same species, the habitat which 

 Fabricius gives is correct enough. 



Wesinael has laid before the Academy of Brussels a work on the genuine 



