14 



Neotetrastichvs gen. nov. 



Head transverse, but rather large, the ocelli in a triangle, 

 the outer ones remote from the eye-margins, each being much 

 more distant from the nearest eve than from anterior ocellus. 

 Antennae nine-jointed with the one ring joint, the scape simple, 

 elongate, with a short basal pedicel, three funicle joints all 

 elongate and subequal, the pedicel also subequal to these, the 

 club elongate, three jointed, subequal to the two preceding joints 

 together, or a little longer than these, the apical joint terminat- 

 ing in a long spine, not much shorter than the rest of the joint. 

 The antennae are clothed, l)ut not densely, with long hairs. 

 Thorax of the usual Tetrastichine structure, the mesonotum 

 without a median groove, the scutellum with two pair of 

 grooved lines. Front wings somewhat densely hairy, blunt and 

 broad at the apex, stigmal vein prolonged apically with three 

 or four circular bubble-like granules; marginal cilia short, the 

 longest not more than one-quarter as long as the greatest width 

 of the wing. Hind wings very acutely pointed at the apex, 

 discal cilia of apical portion very sparse. Abdomen somewhat 

 robust, subequal to the thorax in length; ovipositor sheatJi 

 stout, not extended behind the dorsum of abdomen. Female. 



Neotetrasticlius mimus sp. nov. 



Thorax entirely dark, no doubt metallic in dry mounts, legs 

 and basal abdominal segments pallid yellow% apical segments 

 dark like the thorax. Antennae infuscate, pedicel more or less 

 pale, head pale more or less reddish, or orange in balsam ; hind 

 femora dark at extreme base above. 



Three funicle joints subequal, or the first very slightly shorter, 

 second and third about three times as long as the greatest width, 

 first club joint twice as long as wide Init much shorter than the 

 preceding funicle joint. Thorax ap]iarently with excessively 

 fine surface sculpture, hardly visible even under high powers. 

 Neuration pale. Abdomen clothed with sparse dark hairs; 

 sheath of ovipositor dark. Female. ' Length 1.5 mm. 



Hab. China, ]\Iacao; bred from A<jn)inyza miuing leaves of 

 Vigim sinensis. 



