Cynipidae. 89 



ich es fiir wiinschenswert, die drei Urbescbreibungen Froggatts 

 nachstehend abzudrucken : 



„Cijnips acaciae-discoloris, n sp. 



Length of body, 2 lines. Expanse of wings, 4V 2 lines. 



Head, thorax, and legs reddish-yellow ; abdomen, eyes ,markings 

 round the ocelli, and inner margins of femora of fore legs black. 

 Antennae reddish-brown ; first joint long, slightly curved, cylindrical; 

 2nd pear-shaped, narrowest at base; 3rd and 4th smallest; 5— lOth 

 rounded at base, square across at apex; 11 — 13th forming an oval 

 club; all the joints clothed with fine hairs. Head narrow, hollowed 

 behind, base black, ocelli red, eyes black, very prominent. Thorax: 

 middle iobe of mesonotum large, scutellum large, smooth and shining, 

 with a few scattered hairs all over it; metathorax black beneath, 

 and thickly clothed with black hairs. Abdomen black, covered with 

 fine hairs. Wings fuscous, upper margin of forewings darkest, stigma 

 black, nervures almost black. Legs covered with fine hairs. 



The gall is very common on Acacia discolor in the month of 

 November, when the pupa of the Cynips will be found wrapped up 

 in a black pupa case in the gall when opened. It is formed on 

 the twings where a leaf bud or small shoot is commencing to sprout; 

 sometimes it simply forms an oval swelling at the base of the shoot, 

 but the typical form is an oval gall produced into three irregular 

 horns at the apex, formed out of aborted leaf buds. It is very 

 much infested by a small black Chalcid that attacks the gall and 

 changes it into a shapeless fleshy mass; scores of these minute 

 parasites will hatch out of a single gall. 



Locality: Rose and Double Bays, Thornleigh, K S. W. 



Cynips acaciae-longifoliae, n. sp. 



Length of body, 2 lines. Expanse of wings, 4 x / 4 lines. 



Head, thorax, antennae, and centre of upper side of abdomen 

 from below second segment to tip of abdomen ochreous-yellow ; 

 eyes and ocelli dark brown; first two segments of abdomen and 

 the edges of the folloAving ones black, the colour fading in old 

 specimens to an ochreous-brown ; coxae ancl femora dark brown; 

 underside of abdomen black. Antennae inserted below the eyes 

 in a depression; 13-jointed; lst slender, cylindrical; 3rd — 4th 

 small, funnel-shaped; 5 — lOth rounded at base and square at 

 apex; 11 — 13th forming a club; all from the second joint margined 

 with fine hairs. Head rounded in front and not hollowed behind : 



