154 F. Stoliczka — Monograph of Indian Passalida. [No. 3, 



upper lip. The horn originates in a slightly convex smooth tubercle, and 

 extends freely and almost horizontally to near the front edge, its base is pos- 

 teriorly and at the sides surrounded by a slight furrow, and from the point 

 where the horn becomes free originates on either side a low, indistinct ridge, 

 which makes a curve anteriorly and terminates in a small tubercle some dis- 

 tance short of the marginal projections. Supraocular ridges undulating, each 

 with a sharp point above the eye and another at the anterior corner of 

 the clypeus. 



Prothorax convex, with a central groove ; marginal furrow incomplete, 

 punctated, terminating anteriorly, some distance from the central line, with 

 an elongately ovate scar. Lateral scar large, slightly impressed, composed 

 of a number of irregularly arranged, coarse pits ; a few dots exist near the 

 anterior corner. 



Scutellum very finely punctated at the base ; waist laterally densely 

 punctated, below nearly smooth. 



Elytra rather depressed above, but comparatively high ; all the furrows 

 coarsely pitted ; each shoulder with a tuft of brown hair, which also extends 

 a little posteriorly along the margin. 



Tongue with three ridges, minutely punctated, tridentate at the front 

 edge which is slightly narrower than the base. Lower lip transversely rather 

 elongated, smooth, convex, with a rounded scar at each end ; the lateral 

 branches densely punctated, Metasternum on the posterior sloping corners 

 coarsely punctated. Abdominal segments with an oblique furrow on either 

 side, but in other respects nearly smooth. 



Sah. — Ceylon. The only specimen examined is in the Vienna Museum ; 

 it was obtained by the late Mr. Zelebor during the Novara expedition. 



The species almost perfectly agrees with the characteristic of the genus 

 as given by Kaup. 



Second group. Leptattlace^. 

 Out of the five genera distinguished by Kaup only one is represented 

 in India, namely Leptaulax. It seems to be a little too closely allied to 

 Ciceronius, and still more so to Didimus. From the last it is stated to differ 

 by the single denticle in the centre of the front edge of the clypeus, while 

 Didimus has two ; but I have in a few instances also observed two denticles 

 in both Lept. bicolor and dentatus. Of course we may say, what is in Didi- 

 mus the rule, is an exception in Leptaulax, still it looks rather a little 

 arbitrary to define genera in such cases. However, as I have not a single one 

 of the species of Didimus, described by Kaup, for comparison, I do not 

 wish to propose any changes in the genera, as characterized by him. Looking 

 at Leptaulax in Kaup's sense, it seems to me somewhat doubtful that the 

 number Jive will suffice to include all the different forms which must 

 belong to the genus. The following details, taken with those of Kaup, may 

 speak for themselves. 



