288 MR. R; E. TURNER ON THE [Feb. 15, 



Elidothynnus agilis Sm. 



Thynnus agilis Sm. Cat. Hym. B. M, vii. p. 20 (1859), S • 



§ . Clypeus without a carina ; mandibles rather flattened, with 

 a very small tubercle near the middle of the inner margin. Front 

 sparsely but coarsely punctured and very sparsely clothed Avith 

 greyish hairs, vertex shining, very sparsely and finely punctured ; 

 the head broader than long, rounded at the posterior angles. A 

 short and obscure longitudinal sulcus between the antennae ; the 

 scape smooth above, punctured beneath, with a few long grey 

 hairs. Pronotum half as broad again anteriorly as long, narrowed 

 a little posteriorly, sparsely punctured, with a row of punctures 

 along the anterior margin, all the punctures piliferous. Median 

 segment sparsely punctured, half as long as the pronotum, 

 broadened from the base, obliquely truncate posteriorly, the 

 surface of the truncation almost smooth. Abdomen very sparsely 

 punctured, the segments smooth at the base and apex, the sides 

 and apex of the abdomen thinly clothed with long grey pubescence; 

 the basal segment with a transverse carina strongly emarginate 

 posteriorly before the apex, the apical margin broadly depressed ; 

 second segment with four transverse carina? on the basal portion, 

 the space between the raised apical margin and the carina? finely 

 transversely striated ; fifth ventral segment longitudinally striated. 

 Pygidium long and very narrow ; the basal portion long and 

 strongly compressed, bearing two or three longitudinal carina? ; 

 deflexed obliquely posteriorly and broadened, the surface narrowly 

 elongate-ovate ; the dorsal plate with a median carina not reaching 

 the apex which is trilobed ; the ventral plate narrower than the 

 dorsal and rounded at the apex. Intermediate tibia? no thicker 

 than the posterior, basal joint of the intermediate tarsi normal. 



Black ; the head and legs ferruginous ; the middle of the 

 ventral abdominal segments and the pygidium fusco-ferruginous ; 

 a tuft of long golden hairs on each side of the pygidium. 



Length 12-14 mm. 



Hab. South Perth, W. A. (H. M. Giles). 8 $ in cop. January 

 and February. 



" Eucalyptus bloom. Rare." (Giles.) 



Elidothynnus mobilis, sp. n. 



8 . Clypeus sparsely punctured, rather broadly truncate at 

 the apex. Head, pronotum, mesonotum, and median segment 

 finely and ctasely punctured, scutellum and abdomen more 

 sparsely and strongly punctured. Interantennal prominence 

 V-shaped ; the antenna? stout, of even thickness throughout, as 

 long as the thorax and median segment combined. Median 

 segment obliquely depressed from the postscutellum, rounded at 

 the sides. Abdomen elongate, tapering slightly at the extremities. 

 Seventh dorsal segment deflexed, coarsely punctured and truncate 

 at the apex, without a flattened plate. Hypopygium short, only 

 projecting a little beyond the dorsal segment, produced into 



