232 PROF. M. BEZZI. 



4. PterandrilS rubivorus, Coquillett, 1901 (cosyra, Fuller, 1900) ;* Silvestri, 



Boll. Lab. Zool. Portici, viii, 1913, p. 66, fig. xii. 

 Described from the Cape Colony ; there is in the collection a $ specimen from 

 Transvaal, Pretoria, 16th March 1914, in which the oblique streak on last portion 

 of 4th vein is very faintly developed and hardly visible. 



5. Pterandrus volucris, sp. nov. 



Nearly allied to the preceding species, but at once distinguished by the broadly 

 blackened legs. 



cj. Length of body, 5 mm. ; of wing, 5 mm. Occiput shining and yellowish above, 

 with a blackish spot on each side, whitish opaque and with whitish hairs below. 

 Frons dull yellowish, with a small and indistinct, dark spot on middle and with 

 very sparse, short hairs ; ocellar dot black ; face pale yellowish ; jowls narrow, im- 

 maculate. Antennae entirely pale yellowish ; arista shortly plumose. Palpi and 

 proboscis dirty yellowish. Cephalic bristles black ; only two i. or. Thorax on back 

 black, with greyish dust and short, yellowish pubescence ; the sides and the hind 

 half are shining ; just before the scutellum there is a pale yellowish spot on each 

 side. Pleurae dark brown, but the humeri and a broad mesopleural stripe are 

 whitish. Pleurae with white hairs. All the bristles are black ; dc. placed on the line 

 of the a. sa. ; a single mpl. Scutellum yellowish, with three very broad, rectangular, 

 shining black spots and two very small basal ones ; it bears 4 bristles, and short, 

 pale yellowish hairs on the disc. Postscutellum shining black ; mesophragma 

 black, but with dense grey dust ; a broad, double, whitish hypopleural spot. 

 Halteres pale yellowish. Abdomen dark brown, with whitish pubescence and black 

 bristles at the end ; 1st and 3rd segment with a broad transverse band of whitish 

 dust at hind border ; genitalia shining yellow ; venter brown, grey dusted. All 

 the coxae pale yellow. Front legs wanting in type ; middle and hind femora black, 

 with yellow base ; middle tibiae almost entirely black, hind tibiae pale yellowish 

 with darkened base ; all the tarsi are pale yellowish. Feathers of middle legs long 

 but narrow, of an intense black colour ; they are present on the last half of the 

 underside of the femora, on the whole outer side and on the apical two- thirds of the 

 inner side of the tibiae. The base of middle tibiae is clothed with argenteous 

 tomentum. Wings hyaline, with scanty dark dots at base. First band narrow, 

 extending from stigma across the small cross- vein to the end of the anal vein ; the 

 marginal band is separated from it, and shows the usual 5 dark dots. The oblique 

 streak over the hind cross- vein is only a little produced above into the first posterior 

 cell ; the oblique streak across the middle of last portion of fourth vein is faint, but 

 distinct. Venation normal ; the small cross-vein is before the middle of the discoidal 

 cell, which is narrow and long ; stigma brown, with hyaline end ; costal bristle 

 short. 



Type <J (British Museum), a single specimen from British E. Africa, Embu, 

 18th December 1913 (G. St. J. Orde-Browne). 



* [Mr. C. P. Lounsbury informs us that, so far as he is aware, the true Ceratitis rubivora, 

 Coq., has been bred only from blackberries in the Cape District (where it is quite common 

 and attacks no other cultivated fruit) and is not conspecific with the Natal fruit-fly 

 (0. cosyra, Fuller, nee Walk.), as erroneously stated by I roggatt. The specimens of the 

 Natal fly sent us by Mr. Lounsbury are certainly referable to C. rosa, Karsch. — Ed.] 



