182 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 118 
Head very short, concealed by pronotal hood, with frontal spines 
greatly reduced or absent, the hind pair long, slender, appressed; 
bucculae short, parallel, scarcely reaching anteriorly to apex of head, 
open in front. Antennae long, quite slender, first two segments not 
reaching to apex of hood, fourth segment slightly swollen on apical 
half; segmental measurements: [, 18; IT, 8; III, 78; IV, 30. Labium 
brown, with black tip extending to base of mesosternum; sternal 
laminae of sulcus wide, parallel on metasternum, more widely sep- 
arated and cordate on metasternum, closed behind. Legs slender, 
smooth. Scent gland ostiole and ostiolar sulcus indistinct. 
Pronotum tricarinate, largely concealed by hood, tumid elevation 
of hind process, and the deflexed lateral carinae; hood large, with 
superior surface strongly convex, extending anteriorly beyond apex 
of head and posteriorly almost to middle of pronotal disc, strongly 
narrowed anteriorly beyond distal one-third, basal length much greater 
than height of posterior part (75:50); median carina strongly inflated 
on posterior process, with one large cell between inflated hind part 
and hood (fig. 22); lateral carinae long, wide, usually deflexed out- 
wardly, with outer third suberect, not divided into cells (apparently 
composed of one large cell); paranota wide, slightly raised, composed 
of four large cells. 
Elytra with discoidal and adjacent part of subcostal areas sharply 
jointly raised so as to form together a long, tectiform elevation, which 
extends backward beyond middle of elytra; costal area wide, com- 
posed of one row of very large cells, usually with an extra large cell 
in widest part. Brachypterous form with elytron shortened and 
entirely uniseriate; metathoracic wings absent. 
Typrs: Holotype (male), allotype (female), and 4 paratypes, 
Grahamstown, South Africa, December 1953, Dr. E. M. Callan, 
USNM 65134. 
Remarks: The holotype of B. dieides is illustrated in figure 22. 
The species is broader than its African congeners and is probably 
most closely allied to B. editus Drake of the African mainland and 
Madagascar. The latter is prominently marked with brown or 
fuscous and has shorter antennae and smaller inflated lacy structures 
of the pronotum. 
Genus Cottothucha Drake and Poor 
Cottothucha Drake and Poor, Pan-Pacific Ent., vol. 17, No. 4, p. 162, 1941. 
Cottothucha oceanae Drake and Poor 
FIGURE 23 
Cottothucha oceanae Drake and Poor, Pan-Pacific Ent., vol. 17, p. 163, 1946. 
