Species of Curculionidse /Vom Africa. 385 



The female genitalia (text-fig. 3, a) are remarkable for the 

 great development and flattening of the apical palp-like 

 organs (cf text-figs. 5 and 7), which is no doubt correlated 

 with the absence of any elongate extensile ovipositor, the 

 vagina not being differentiated from the bursa copulatrix. 



Subfamily Rhttirrsinin^. 



Rhytirrhinus lobaticollis, sp. n. (PI. XIII. figs. 7, 8.) 



cJ ? . Black, uniformly clothed with earth-brown scaling. 

 Head completely concealed from above by the anterior 

 thoracic lobe ; the forehead excavated, with a high sqnamose 

 fringe above the eyes, the vertex with two short longitudinal 

 ridges formed of densely packed stout setse, and a row of 

 numerous similar sette between them and the lateral mar- 

 gin ; eyes rather coarsely facetted, semi-ovate, the posterior 

 margin almost straight ; the gular area very finely aciculate, 

 and not transversely carinulate. Rostrum with a very broad 

 and deep median furrow, occupying almost the whole dorsal 

 width and bounded laterally by a ridge bearing a dense 

 mass of erect scales ; an almost equally broad and deep 

 lateral furrow above the scrobe, the latter densely squamose 

 throughout ; the epistome convex and without any defined 

 boundary. Antenna comparatively long and slender; the 

 scape just reaching the eye, slender in the basal two-thirds, 

 gradually clavate at the apex, and bearing the usnal erect 

 seta3 ; the two basal joints of the funicle longer than the 

 rest together, joint 1 as long as the club, 2 as long as 3—5 

 together, 3 elongate, 4-6 bead-like and a little longer than 

 broad, 7 transverse. Prothorax a little longer than broad 

 (9:8) ; the dorsum concave, with all the margins except 

 the base strongly raised ; the anterior portion produced into 

 a long broad lobe considerably exceeding the head, its apex 

 deeply sinuate, and its edges bearing clumps of matted 

 erected scales ; the lateral margins similarly produced, but 

 the lobes shorter and broadly truncate, or with the posterior 

 clump of scales higher than the anterior one ; in the middle 

 of the base two short high longitudinal ridges of matted 

 scales, and on each side of the disk a similar transverse, 

 slightly oblique ridge ; the centre of the anterior lobe, 

 which is the deepest part, set with numerous erect broadly 

 spatulate scales ; the shallow reticulate punctation hidden 

 by earthy indumentum, and more readily visible on the 

 pleurae, on which there are two small prominent tubercles 

 bearing tufts of matted scales. Elytra with four tubercular 

 Ann. db May. N. Hist. Ser. 9. Vol. vi. 26 



