276 MR. R. SHELFORD ON MIMETIC INSECTS AND [ Nov. 4, 
one-fifth from the apex. Prosternum rather strongly tuberculate 
between the cox; the mesosternum with a smaller tubercle on 
its hinder half. 
This is the only species of the genus known to me in which the 
sternal processes are distinctly caberculaee: 
ERYTHRUS BIAPICATUS, sp. n. (Plate XXIII. fig. 19, ?.) 
Niger, prothoracis disco et elytrorum basi rufis, nigro-vittatis : 
prothorace ruguloso-punctato, sine tuberculis distinctis ; 
elytris dense granulatis, postice divaricatis, utrisque in spinam 
parvam terminantibus, 
Long. 153 ; lat. 34 mm. 
Hab. Kuching, Mt. M: atang, 3600 ft., June 1900. One female 
example, 
Black, with the disk of the prothorax and the basal third of 
the elytra partly red, the red of the prothorax being eae 
by two black bands extending from the front margin, and by a 
small median spot near the base, while the red on the base of the 
elytra is divided by a narrow band along the suture, and two 
wider bands on each side extending forwards and eradually 
narrowing from the posterior black area. Prothorax rugulose 
punctate, and showing traces only of the tubercles present in most 
of the other species. Elytra very densely granulate, the granules 
bearing very minute black sete, which are scarcely evident except 
on the rufous areas near the base. Metasternum somewhat 
similarly granulate to the elytra, and the abdomen much more 
finely so. Antenne of the female about half the length of the 
body, with the joints from the fifth to the tenth rather broad, and 
angulate at the apex on the anterior side. 
The divergence of the elytra from the suture behind and the 
granulation of thei surface serve to distinguish this species from 
all those hitherto described belonging to the genus. 
ERYTHRUS VIRIDIPENNIS, sp. n. (Plate XXIII. fig. 58.) 
Niger, pr othorace toto rufo, ee is viridescentibus aut viridi- 
cyaneis et opacis; antennis (¢) quam corpore paullo brevi- 
ortbus, (2) medium elytrorum vix superantibus, articulis 
5° ad 10%" modice dilatatis ad apicem dentatis ; prothorace 
obsolete punctato, supra leviter quadri-nodoso ; elytris ecre- 
berrime ruguloso-punctatis, apice subsinuatis ad sutwram 
breviter spinosis. 
Long. 12-16; lat. 23-3 mm. 
Hab. Mount Mats ing, near Kuching in Sarawak (3600 ft. alt.), 
June 1900. Five examples ; in the British Museum and Hope 
Collection, Oxford. 
PY othorax ved above and below, elytra of a dull green or bluish- 
green colour, all the rest of the body together w ith the legs and 
antenne being black. Prothorax indistinctly punctured, fur- 
nished with four feeble nodules on the disk, two being near the 
middle and two, more widely separated from each other, néar 
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