MAULIK—COLEOPTERA, CHRYSOMELIDA: HISPINA OF THE SEYCHELLES 241 
Maaille with the outer lobe 2-joimted, the basal jomt being rather short and stout, 
the apical joint subconical, pointing slightly inwards; inner lobe membranous; palpi 
short, 4-jointed, joints 1—3 short and transverse, joint 4 incrassate, bluntly rounded 
apically, more convex on the inner side, about as long as 1—3 together. Mentum 
subtrapezoidal, broader in front than behind, with anterior angles rounded; ligula 
membranous, projecting in front; labial palpi short, joints 1 and 2 short, joint 3 
incrassate, blunt at apex, more convex on the inner side, about as long as 1 and 2 
together. _Prothorax cylindrical, only slightly produced in front, not margined at 
the sides, much narrower at the base than the base of the elytra, with an almost 
impunctate longitudinal line reaching nearly from apex to base. Scutellwm shield-like, 
base straight, apex widely rounded, surface seen under a high power minutely reticu- 
late. Hlytra with sides nearly straight, slightly broadening behind, with anterior 
angles rounded ; towards the apex the lateral margin bends inwards, forming a widely 
rounded obtuse angle; suture raised into a ridge which commences a little behind 
the scutellum; also with three other longitudinal ridges on each elytron, converging 
somewhat at the base, and united by somewhat irregular transverse ridges: there 
are two rows of very rugose punctures between each pair of ridges; these punctures 
become so wide on the lateral surface as to run into each other. The surface generally 
presents a very rugose and rough appearance. Under side finely and sparsely punctate. 
First and second ventral abdominal segments not soldered. Legs short, femora mode- 
rately incrassate. 
This genus resembles Celanomenodera Blanch. in general shape and form, but 
the prothorax is not produced so far over-the head in front. It has a cylindrical 
prothorax like that of Promecotheca Blanch., but without the posterior constriction. 
2. Rhabdotohispa scotti, n. sp. (Figs. 3—5). 
?. Black; with two longitudinal lines on the prothorax, with irregular patches 
on the disc and the extreme apex of the elytra, with apices of femora and bases of 
tibize inwardly, and usually with the 4th, 5th and basal half of the 6th antennal joints, 
ochreous. 
These pale markings are variable. In the hind and middle femora and tibize 
they are very much obscured with black, sometimes completely absent. They are 
constant at the extreme apices of the elytra, and fairly constant on the fore femora 
and tibie. In the antennee the pale colour sometimes appears in the second joint 
also; on the other hand it may be very much obscured in joints 4, 5, and basal 
half of 6. 
g. Smaller; the extreme apices of elytra are never ochreous, and the whole 
insect may be completely black except the apices of the fore femora and the bases of 
the tibize, and the 5th and basal fourth of the 6th joints of antennee, which are tinged 
with ochreous. 
From the gradual variation observable in the examples before me it may be 
fairly concluded that some specimens may be completely black without a trace of 
ochreous. 
31—3 
