230 Messrs. J. J. Joicey and W. J. Kaye on 
XXIII.— Two new Species and new Genus of Sphingide. 
By J. J. Joicny, F.E.S., and W. J. Kaye, F.E.S. 
[Plate VIII. ] 
Polyptychus lapidatus, J. & K. 
3. Differs from P. murinus, Roths. (1904), in the 
following points :— 
Smaller; distal margin of fore wing’ a little less incurved 
and darker brown than in P. murinus, the ante- and post- 
median lines less irregular, the antemedian ones ending at 
hind margin, with a conspicuous brown spot composed of two 
arcs ; the postmedian lines, which in P. murtnus are crenate 
or dentate in front of the hind margin, being strongly marked 
in this area, are in dapidatus feebly marked, not contrasting 
much with the ground, a somewhat diffuse brown spot at 
hind margin near angle being the most conspicuous marking 
in this area, Anal angle of hind wing less produced than in 
P. murinus, the apex of hind wing broader, the brown anal 
submarginal spot continued forward. 
Underside : costal margin of fore wing and the hind wing 
with the exception of the distal and abdominal marginal areas 
laved with ferruginous, almost as in P. murinus; fore wing 
with a somewhat dentate postdiscal line, and further towards 
margin two rows of minute dots, the inner dots being connected 
with one another by a very faint brown line. On hind wing 
three brown lines. 
Genitalia similar to those of P. murinus, but anal tergite 
slenderer and comparatively larger. The clasper (fig. 2) with 
a small, well-defined patch of small yellowish scales on the - 
outside near apex; the upper process of the harpe (P?) 
directed obliquely downwards, very much shorter than the 
corresponding process of P. murinus ; moreover, in P. murinus 
P! is almost horizontal, being directed towards the apex of 
the clasper, which it reaches ; process P? is denticulate and 
touches P* apically ; below P* there is a short lobe L. The 
penis-funnel is armed below the penis-sheath with two conical 
thorn-like teeth which are curved upwards ; in P. murinus 
the two prongs of this fork are almost divaricate, while in 
lapidatus they are divergent. (For the meaning of these 
termini see Lacordaire, Genera Coléopt. ix. 2, p. 412, 1872.) 
The genitalia of two ¢ g of P. murinus have been compared, 
one from the Congo, the other from the Gold Coast. 
Hab. W. Africa, Coomassie. 
Ios 
Expanse 64 mm. 
