62 MB. R. E. TURNER ON 



This is related to P. n'ttidas Sm., but the male may be easily 

 distinguished by the colouring and the bidentate clypeus ; the 

 female by the compressed and subtuberculate scutellum, the 

 somewhat similar tubercle in nitidus being on the base of 

 the median segment. These two species form a group rather 

 distinct from P. monilicornis, the type of the genus. 



The male of this species was attracted at Yallingup in large 

 numbers to hair lotion, the chief ingredient of which was oil of 

 bergamot. 



Phymatothynnus pygidiqphorus, sp. n. (PI. I. figs. 13, 14.) 



$ . Niger, albopilosus ; alis hyalinis, venis nigris ; hypopygio 

 truncato, angulis apicalibus brevissime dentatis, spina apicali 

 magna, incrassata. 



2 . Nigra, antennis pygidioque fusco-ferrugineis ; capite 

 thoraceque nonnunquam ferrugineis ; segmento dorsali sexto 

 basi constricto, lateribus marginato. 



Long., c? 10 mm. ; $ 5-6 mm. 



J . Clypeus with a carina, produced and narrowly truncate 

 at the apex ; interantennal prominence strongly developed, 

 broadly rounded at the apex ; antenna? with the apical joints 

 strongly arcuate beneath. Head rather broad, coarsely rugose. 

 Thorax deeply but not very closely punctured ; the pronotum 

 with the anterior angles slightly prominent ; median segment 

 rounded, finely and closely punctured. Abdomen shining, the 

 punctures almost obsolete, subfusiform, the first segment slender 

 at the base ; seventh dorsal segment punctured-rugose. Hypo- 

 pygium broad, with parallel sides, short, broadly truncate at the 

 apex, the apical angles produced into short, delicate spines, the 

 apical spine very stout and long. Second abscissa of the radius 

 distinctly longer than the third ; first recurrent nervure received 

 nearly half as far again as the second from the second transverse 

 cubital nervure, the second recurrent received at about one-fifth 

 from the base of the third cubital cell. 



5 . Head subrectangular, half as broad again as long, rounded 

 at the posterior angles, rather closely punctured, the clypeus 

 without a carina, the front with a short sulcus and produced into 

 small tubercles at the base of the antenna?. Pronotum a little 

 longer than broad, sparsely punctured. Scutellum broader than 

 long, no longer than the dorsal surface of the median segment. 

 Abdomen closely and finely punctured ; first dorsal segment with 

 a transverse groove before the apical margin ; second transversely 

 rugulose between two transverse carinas, a broad transverse 

 groove before the raised apical margin. Pygidium narrowed at 

 the base, the sides margined from the base by divergent carina?, 

 broadly rounded at the apex. 



Hah. Yallingup, S.W. Australia ; September to November. 

 <$ 2 in cop. 



The male is rather near P. moil ilicomis Sm., but the hypopygium 



