Descriptions of Neio Species of Parasitic Hymenoptera. 55 



The Group of I. 12-fa$ciatus, Cam. 



Eufous, the head, mesonotum and marks on the pleurae black. Wings fuscous, 

 with numerous hyaline spots. Abdomen twice the length of the thorax ; the 

 second and third segments stoutly striated ; the area on the second segment 

 large, triangular, with a keel which reaches to the apex of the segment ; it is 

 obscurely striated. Ovipositor longer than the body. 



I. capensis, Cam., might form another group, differing from the 

 above in the thorax having no black ; the wings with only the usual 

 fasciae along the transverse cubital nervures, the abdomen strongly 

 closely striated, with the area on second segment strongly closely 

 striated and bordered by a band of oblique striae. 



Iphiaulax 12-fasciatus, Cam. 



Rec. Alb. Museum, i. 154. 



One (J from Dunbrody (O'Neil). 



It does not differ from the 2 . 



The Group of I. tricldosomus. 



Kufo-luteous, with black head ; wings fuscous, the base broadly yellowish 

 hyaline. Abdomen including the furrows smooth ; no area on the second 

 segment, the middle at the base not in any way separated from the sides ; the 

 abdomen broad, ovate, not much longer than the thorax. Parapsidal furrows 

 not indicated. 



This group is easily separated from those of rohustiis and xantlio- 

 stomus by the more reddish colour and, more particularly, by the 

 very smooth abdomen. It agrees with them in the transverse median 

 nervure not being interstitial. 



Iphiaulax trichiosomus, sp. nov. 



Luteous, the antennae, head, apex of hind tibiae, hind tarsi, and 

 mandibules, black ; the palpi stout, dark testaceous, pilose ; wings 

 yellowish hyaline to the lower part of the transverse basal nervure ; 

 dark fuscous beyond ; the stigma reddish luteous, black at the apex. 

 Body and legs thickly covered with white pubescence ; the hair on 

 the face and oral region long and black. J . 



Length 11 mm. ; terebra 4 mm. 



Cape Colony. No exact locality. 



Abdomen smooth and shining, neither punctured nor striated. 

 The second segment widely, obliquely depressed at the base ; the 

 suturiform articulation narrow in the middle, widened laterally ; 

 there are nari-ow, smooth furrows on the base and apex of the fourth 



