116 Mr. R. E. Turner on the 



side ; frontal callus fairly deep on each side, narrowing 

 towards middle line, where it is distinctly constricted ; dark 

 seal-brown median spot below callus present; lateral frontal 

 clove-brown spots small, widely separated from eyes, median 

 frontal spot very small or obsolete ; palpi isabella-coloured, 

 terminal joint moderately slender, thickly clothed on outer side 

 with black hairs, and with some pale yellowish hairs on under 

 side of basal half ; antenna russet-brown, terminal annulus 

 of third joint darker, first joint somewhat short, slightly 

 swollen, with convex inner margin when viewed from 

 above, third joint only slightly expanded towards base. 

 Thorax : pleurae, pectus, and sides of dorsum smoke-grey ; 

 scutellum smoke- grey, with a dark brown blotch on each side. 

 Ahdomen : venter as in H. sthnulans, Austen. Halteres as in 

 H. sthnulans. 



Nyasaland Protectorate, 1907 {Dr. J. E. S. Old). 



Care is necessary in order not to confuse H. nocens with 

 one or other of the two foregoing spceies, to both of which 

 it presents a superficial resemblance, although from both it 

 may be distinguished by the finer and less complex light 

 markings of the wings ; other points of difference from 

 H. furtiva are furnished by the shape of the frontal callus, 

 and the browner and more incrassate first joint of the 

 antennae ; from H. no civ a the present species may further 

 be distinguished by the shape and coloration of the frontal 

 callus and first joint of the antennae; from H. noxialis, 

 Austen, which, as already stated, it closely resembles in the 

 coloration and markings of the wings, H. nocens may be 

 distinguished, inter alia, by the coloration and shape of the 

 frontal callus, and the presence of a median stripe on the 

 dorsum of all the abdominal segments except the first and 

 last. 



XIV. — Remarks on the Hymenopterous Genus Tiphia. 

 By Rowland E. Turner, F.Z.S., F.E.S. 



Ashmead (Canadian Entomologist, 1900 and 1903) forms a 

 family Tiphiidse to include the genera Tiphia, Paratiphia, 

 JEpomidiopteron, Pterombrus, and Engycystus. While agree- 

 ing with him as to the points distinguishing the group from 

 the true Scoliidae being of more than generic importance, I 

 do not think he is justified in making more than a subfamily 

 for it. I also differ from him in his remarks on Pterombrus 

 and Engycystus. The differences which he gives between 



