ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 303 



First joint of the funicle much longer than the pedicel, cylindrical, the following gradually 



shortening, but the last is still a little longer than thick Heterarthrellus Howard 



(type S. australiensis How.V 

 Postmarginal vein wanting ; joints increase in width, but they are not longer than wide. 



Astymachus Howard (type A. japonica How.)- 



40. Thorax without a scaly pubescence, and without white lunulse before the tegulse 41 



Thorax luith a scaly pubescence, and with white lunulse before the tegulse. 



Scape more or less dilated beneath, especially towards the apex, rarely simple, the flagellum 

 ringed with white ; wings hyaline, the stigmal and postmarginal veins subequal, longer than 

 the marginal Blastothrix Mayr (type Encyrtus sericeus Dalm.). 



41. Scape normal, not expanded or dilated beneath, at the most subclavate ; wings hyaline 42 



Scape dilated or expanded beneath, the club not especially enlarged, shorter than the funicle, the 



latter usually ringed with white, the first four joints of same longer than wide ; front wings usually 



with fuscous bands, or fuscous with hyaline bands or markings Microterys Thomson 



(type Encyrtus sylvius Dalm.). 



42. Thorax finely coriaceous, subopaque, without punctures scattered over the surface ; frons punctate ; 



postmarginal vein longer than the stigmal 43 



Thorax smooth, impunctate, or at the most microscopically reticulate, or with fine longitudinal striae 

 on the mesonotum 44 



43. Scape subclavate, the funicle 6-jointed, the joints wider than long, the club not thicker than the funicle ; 



front wings hyaline with an oblique hairless line from the marginal vein ; stigmal and postmarginal 

 veins longer than the marginal ; scutellum with a delicate median grooved line at base. 



Holcencyrtus Ashmead (type Aphycus niger Ashmead.). 



44. Mesonotum smooth, impunctate, or at the most microscopically reticulate 45 



Mesonotum with fine longitudinal strise. 



Stigmal vein scarcely longer than the marginal, the postmarginal longer than the marginal and 

 the stigmal veins united ; eyes pubescent ; funicle joints 2-4 not longer than thick. 



Ageniaspis Dahlbom (type Encyrtus fuscicoUis Dalm.). 



45. Stigmal vein very short, not or scarcely so long as the marginal and postmarginal veins united ; axillae 



either meet at their inner basal angles or they are separated ■ 47 



Stigmal vein much longer than the marginal, as long or longer than the marginal and postmarginal 

 veins united ; the axillae do not meet at their inner basal angle 46 



46. Lateral ocelli not close to the eye border ; club of antennae not much enlarged, only about half the 



length of the funicle, the joints of the funicle cylindrical, much longer than wide, never moniliform ; 

 abdomen conic-ovate, usually a little longer than the head and thorax united. 



Pseudencyrtus Ashmead (type Encyrtus cecidomyise How.). 

 Lateral ocelli close to the eye border ; club of antennae not one third the length of the funicle, the 

 joints of the funicle gradually thickening to the club, wide, joints 1 to 5 a little longer than thick, 

 the sixth quadrate ; abdomen short-ovate, shorter than the thorax. 



Tachardisephagus Ashmead, gen. nov. (type T. thoracicus Ashm.). 



47. Stigmal vein not longer than the marginal and postmarginal veins united, usually distinctly shorter 



than the marginal. 



Postmarginal vein longer than the stigmal. 



Club of antennae short, not one third the length of the funicle, funicle joints 1 to 4 short- 

 ening, not longer than thick ; axillae meet at base of scutellum ; head sublenticular- 



