ON NEW SPECIES OF PARASITIC CYNIPID^. 131 



Bat besides the distribution being different, the variation of 

 the two insects is dissimilar. For our brunneusia a most puzzling 

 creature on account of its variation, while our hiridas is, for a 

 Thyamis, remarkably constant. 



Hence, if the two be really one species, as Weise maintains, 

 we have the remarkable condition that a variable wingless species 

 produces winged individuals in the case of only one of its 

 varieties, as well as over only a portion of the area of its distri- 

 bution. 



This is certainly far from impossible ; but we know nothing 

 of the life-histories, and until we do so I do not think we can 

 acce|)t Weise's opinion as certainly established. It is true that 

 the aedeagus of the male is extremely similar in the two forms, 

 but the structure of this organ is very simple and very much 

 alike in the different species of Thyamis, so that I feel by no 

 means sure that this character is decisive. 



I consider the question, therefore, to be one still requiring 

 elucidation. 



Brockenhurst, April 10th, 1910. 



ON NEW SPECIES OF PARASITIC CYNIPIDM 

 CAPTUBED BY MR. JOHN HEWITT, B.A., AT 

 KUCHING, BORNEO. 



By p. Cameron. 



Paramblynotus rufiventris, sp. n. 



Black, the abdomen rufous, the wings hyaline, the radial and first 

 cubital cellules smoky, the nervures black. Pro- and mesonotum 

 closely, somewhat strongly reticulated, the scutellum much more 

 widely and irregularly reticulated ; propleurae reticulated like the 

 pronotum, the mesopleurae almost smooth, densely covered with 

 depressed silvery pubescence ; the metapleurse irregularly areolated. 

 Metanotum areolated, the lateral areae larger and wider than the 

 central ; its sides and lower part covered with silvery pubescence. 

 Face rugosely punctured ; there is a stout keel between the antennae ; 

 it is, as is also the oral region, densely covered with silvery pubes- 

 cence. Ocellar region raised, margined, rounded in front. Collar 

 margined behind by a smooth keel. Apical abdominal segments 

 fringed with white pubescence. $ . Length 4 mm. 



The legs are stout, and are densely covered with silvery pile. The 

 puncturation on the thorax is stronger than it is on the other 

 Bornean species, from which it may be further known by the red 

 abdomen. 



For a synopsis of the previously described Bornean species 

 of Paramblynotus see the Deutsch Ent. Zeitsch. 1909, p. 18. 



The ocellar region in Paramblynotus is raised, clearly separated, 

 triangular ; the ocelli are in a curve. The male has the antennae 



l2 



