1867.] 125 



A. Malpighii, Hart., in Grerm. Zeits., 2, p. 192. 



? Diplolepis lenticularis, Oliv., Enc. meth. 



.'' Cynips lonqipennis, Fab., Piez., 148, No. 21. 



N. Malpighii, Eatz., Forst., Ill, pi. 5, fig. 3 (gall). 



This insect, whatever be its name, is the inhabitant of the well- 

 known oak-spangle. See Eeaum., Ins., Ill, pi. 42, fig. 8 — 10 ; Mal- 

 pighi, Opera omnia, pi. 7, fig. 15 ; Westwood in the " Arboretum 

 Britannicum," p. 1827, and Smith in Tr. Ent. Soc. 1839, Vol. 2, Proc. 

 p. 43. Last spring I made a large collection of the galls in the month 

 of March, and after keeping them three or four days, had the gratifi- 

 cation of obtaining from them some hundreds of the flies, but all $ . 

 They are parasitically infested by a species of Eurytoma. It is not 

 easy to distinguish the present insect from Spathegaster haccarum, Lin., 

 which I also bred last spring in quantities, from the currant gall of the 

 oak, ^ ? . The latter has the maxillary palpi 5-articulate, and the 

 labial 4-articulate, the petiole longer, and the antennae of the ? 14- 

 articulate ; the legs are also nearly free from black markings. 



Neuroterus fumipennis, Hart. 



Black ; the two basal joints of the antennae, the legs, and the basal 

 third of the abdomen, testaceous. Sutures of the parapsides faintly 

 marked. Wings smaller than in the preceding ; the radial cell shorter ; 

 infumated, darker towards the tips ; the base of the radial cell, the 

 outer side of the areolet, and the basal transverse vein more suffused 

 with brown. The brown dashes on the outer side of the basal transverse 

 vein are united into one. The abdomen is less compressed. The tips 

 of the tarsi are fuscous. $ . Long. 1 ; alar. exp. 3 lin. 



N. fumipennis. Hart., in Germ. Zeits., 3, p. 339. 



Common in England upon oak trees, but its gall does not appear 

 to have been remarked. It is named in the older collections longipennis, 



Fab., upon what authority I know not. The Fabrician description 



is " Atra, abdomine compresso ; alis elongatis, alhis, punctis 2 nigris ;" 

 which is certainly more applicable to N. Malpighii. Fabricius could 

 not have failed to indicate the more salient characters of the insect, 

 such as the blackish wings, and the testaceous base of the abdomen. 



Sect. II. Sutures of the mesonotum invisible. 



Neurotefus politus, Hart. 

 Minute, black ; mouth, base of the antennae, and the legs, dull 

 testaceous, coxae black at the base, Mesonotum smooth aud shining. 



