310 MR. R. E. TURNER ON THE [Feb. 15, 



posterior tibiae quite smooth, tarsal ungues with one tooth. 

 Radial cell broad, second abscissa of the radius nearly as long as 

 the third, first recurrent nervure received beyond the middle of 

 the second cubital cell, second before one-third from the base of 

 the third cubital cell. Submedian cell equal in length to the 

 median ; cubitus of the hind wing originating some distance 

 beyond the transverse median nervure. Black ; legs fusco- 

 ferruginous. Wings hyaline, crossed by a fuscous band which 

 extends from the basal nervure to the middle of the radial cell ; 

 a small fuscous cloud at the apex. 



Length 8 mm. 



Hob. South Perth, W. A. (H. M. Giles). January. 



Differs from the characters of Agenia as given by Ash mead in 

 the eyes not reaching the base of the mandibles. I have been 

 unable to see any long hairs at the base of the maxillse, but the 

 general facies is that of Agenia rather than of Pseiodagenia. 



Key to the species of Pseiulagenia mentioned here. 



2 2- 



A. Abdomen and thorax marked with yellow P.gilberti. 



B. Abdomen and thorax without yellow markings. 



a. Antennae black, rarely marked with white. 



a 2 . Fifth joint of the flagellum creamy white above... P. ceneopilosa. 

 b 2 . Antennae entirely black. 

 a' A . Clypeus narrowly produced into a stout tooth... P. Camilla. 

 P. Clypeus broadly rounded or transverse at the 

 apex. 

 « 4 . Thorax and abdomen glossed with steel-blue. 



Length 4 mm P. una. 



J 4 . Thorax and abdomen entirely black. Length 

 8-13 mm. 



a h . Median segment longer than broad P. Valeria. 



b h . Median segment broader tb an long P. dispersa. 



b. Antennae entirely or in great part orange-yellow. 

 a' 2 . Wings fuscous, without darker bands. 



« 3 . Three basal joints of antennae only orange. 



Front with golden pubescence P . fiavicornis Sm. 



b 3 . Eight basal joints of antennae orange. Pubes- 

 cence on front paler P. provida. 



b 2 . Wings hyaline or fusco-hyaline, crossed by 

 fuscous bands. 

 a s . Wings fusco-hyaline. 



a 4 . Clypeus shallowly bisinuate, with a short 



median tooth P. consociata. 



b 4 . Clypeus transverse at the apex P. novaree Sauss. 



J 3 . Wings clear hyaline. 

 a 4 . Median segment rather coarsely transversely 



striated F.fasciata Fabr. 



6 4 . Median segment not transversely striated. 

 a 5 . Median segment without a median 



sulcus. Length 7 mm P. eomelia. 



b*. Median segment with a shallow median 

 sulcus. 



« fi . Median segment longer than broad P.fusiformis Sauss. 



b 6 . Median segment as broad or broader 



than long P. australis Cam. 



The species seem to vary geographically to a certain degree as 

 to the relative size of the cubital cells. 



