1872. 123 



also the intermediate and posterior coxse and trochanters, covered with silvery pu- 

 bescence ; the disc of the mctathorax with a fine transverse striation, interrupted 

 1 the middle by a longitudinal line, which docs not run to the verge of the trunca- 

 i'on ; the truncation densely covered with silvery pubescence, and with a longitudinal 

 •■>val groove in its centre. "Wings hyaline, with a beautiful whitish-blue iridescence 

 m certain lights, and with an interrupted fuscous cloud at the apex, beginning with 

 the marginal cell, the second submarginal cell, &c. ; the tegulie pale ferniginous, the 

 stigma black, the nervures dark fuscous. Legs ferruginous, with the upper-side of 

 the anterior and intermediate coxas and trochanters, and of the apex of the posterior 

 femora, the posterior coxse and trochanters, and the apical apines of the intermediate 

 .lud posterior tibite, black ; and the posterior tibise and tarsi blackish. Abdomen 

 black and shining, the posterior margin of all the segments and the base of the 

 second very thinly covered with short grey pubescence ; the posterior margin of the 

 first segment, and also the apical segment, dark fuscous, the latter closely punctured, 

 iud terminated by a style which encloses the aculeus. 



Sent from Soerabaya (East J^va) by my brother, M. L. llitsema 

 ('iu tbe collection of tbe Eoyal Museum at Ley den) . 

 Leyden : Septemher 2Uh, 1872. 



DESCRIPTION OF A NEW SPECIES OF APSIDIUS FROM BRITAIN. 

 BY TUE EET. T. A. MAESIIALL, M.A., F.L.S. 



So few of tbe numerous species of this group have been described, 

 ! that it is easy to detect a new form. The following has been compared 

 with every extant description : — 



Aphidius geegaeius, sp. n. 



AntenncB ? 20-, ^ circiter 25 -articulatce. Caput fransversum, 

 thorace latins. Palpi maxillares 4-, lahiales 3-artictolatce. Ilesothorax 

 sulculis orclinariis nullis. Metathorax non excavatus. Alarum cuhitalcs 

 tantum 2, quarum prima cum discoidali confusa. tegmentum primum 

 ahdominis medio coiistrictnmjjjostjjefiolo tumidiusculo,scabriculo. Terehra 

 lata, hand incurva, perhreviter exserta. Luteus ; ontennis (^articulo 

 1" excepto), capite, inesothoracis disco, et metathorace p>li(s minus, nifjris. 

 Stigma et nerci cuhitales {i)i vivo) riridia. ,^ $ Long. lin. 1\. 



The abdomen is a paler testaceous than the rest, and the hinder edges of the 

 segments are tinged more or less with fuscous. The petiole is often black or brown. 

 Tercbra black. Nervures of the wings fuscous, except those forming the rudimentary 

 cubital cells, and the stigma, which, when the insect is alive, are pale green. The 

 areola is open behind, from which it results that there arc only two cubital cells, 

 and the first is not divided from the discoidal. The black colour on the mesothorax 

 is indistinctly trilobate, the middle lobe or spot shorter than the other two, leaving 

 a luteous space before the black scutellum. The hind coxse at the base, the liind 

 femora, and the hind tarsi, are more or less fuscescent. 



