98 Mr. Malcolm Burr’s Preliminary Revision of the 
Genus DIAPERASTICUS,* nov. gen. 
Corpus sat depressum; antenna segmentis 4 et 5 cylindricis, 
eradatim elongatis ; elytra et alee perfecte explicate: ; pedes breves, 
femoribus plus minus incrassatis; pygidium breve, latum, trans- 
versum, depressum, haud spinosum ; forcipis bracchia ¢ gracilia, sat 
elongata, 
Type.—Sphingolabis sansibarica, Karsch, in Berl. ent. 
Zeitschr., vol... xxx, p., 90; PL Al fig.-18)) ¢  aGliseoy 
(Zanzibar.) 
This genus will also include :— 
Apterygida mackindert, Burr, Ann. Mag. N. H., ser. 7, 
vol. vi, p. 88, Pl. IV, fig. 3a, 3. (1900.) (British East 
Africa). 
Apterygida bonchampst, Burr, Tr. Ent. Soc. Lond., p. 317. 
(1904.) (Abyssinia.) 
Forficula erythrocephala, Olivier (nec Fabr.), Enc. Méth. 
vol, vi, p. 468. (1791.) (Africa and Madagascar.) 
TABLE OF SPECIES. 
1. Elytra flava, rufo-vittata. 
2. Forcipis bracchia ¢ margine interno 
haud dentato, crenulato . . . . 1. erythrocephala, Oliv. 
2.2. Forcipis bracchia apicem versus 
margine interno dentata . . . 2. bonchampsi, Burr, 
1.1, Elytra unicoloria, fusca. 
2, Corpus sat robustum; forceps in- 
crassatus, medio fortiter dentatus 3. mackinderi, Burr, 
2.2. Corpus gracile; forceps gracilis, 
dente medio parvo, fere obsoleto . 4. sansibarica, Karsch. 
Sub-family 5.—OPISTHOCOSMIIN 44. 
This sub-family is usedin a very restricted sense, as 
very many new genera must be formed for the reception 
of species which were formerly included in the cumbrous 
and very heterogenous Opisthocosmia, and many of the 
former members of that genus, in its widest sense, must 
be removed to other sub-families. 
* Gr. dSiamepaotixds = penetrating. 
+ Probably this species is a large light-coloured variety of D. 
sansibarica, Karsch, 
