184 [Junuary, 



fectly well-defined generic group in this sub-family. The short and 

 broad scutellum, it shares in common with Eucamptognathus and 

 Oodinus, two other fine Madagascar genera of the same group. In the 

 degree of slenderness and character of clothing of the under-surface of 

 the tarsi, there is considerable difference amongst the species, as there 

 is also in size and sculptui*e ; but in all, the elytra are ribbed and more 

 or less obliquely truncate and toothed at the apex. 



I have had the opportunity of examining four distinct species 

 of this fine genus. They appear to inhabit the central plateaux 

 and mountains of Madagascar, but nothing has yet been recorded 

 regarding their habits. Judging from the length of the legs, they 

 must have great powers of running, and it is probable that many more 

 species remain to be discovered. 



1. EUBEOMUS STBIATOCOLLIS. 



Feronia (Omalosoma) striatocollis, Brulle, Hist. Nat. des Ins., iv, 

 p. 364 (1S34). 



Eudromus alternans, King, Wiegm. Arch., 1835, i, p. 384, t. 6, 

 f . 2, c. d. 



My specimen (?) measures li in. (IS lines) in length. Brulle's 

 appear to have been a little larger (20 lin.). King gives 17 — 20 lin. 

 The species is distinguished by the opaque, minutely sculptured 

 surface of the thorax and elytra ; the thorax being covered with fine 

 transverse striae. 



2. EUDROMTJS L^VICOLLIS. 



Feronia {Omalosoma) Icevicollis, Brulle, I. c, p. 3G5. 



Measures 1 in. 10^ lin. Brulle's example, taken by M. Bernier, 

 and deposited in the Museum d'Histoire Naturelle, is nearly of the 

 same size as mine. Distinguished by its nearly quadrate and smooth 

 polished thorax. The elytra are less opaque than in E. striatocolUs, 

 although covered with a similar minute scuplture, consisting of exces- 

 sively fine striae, on ribs and interstices alike. The ribs are six on each 

 elytron, the alternate (2nd and 4th) rather higher, and the 6th or 

 submarginal one much elevated, extending to the sutural apex, and 

 receiving the 2nd and 4th at their termination. 



3. Eudromus teisulcatus, ii. sp. 



Latior, elytris utroque sexu gradatim dilatatis. Niger, sericeo-nitens : thorace 

 quadrato, lateribus anticis rotundatis, posticis sinuatis ; dorso sulcis tribus IcBvibus, 

 latis, profundis, margmem anticiim hand attingentibus : elytris ntrinque tri-costatis, 

 interstitiis Icevibus, a^ice oblique truncato, ajpice sulurali ^ obtuso, $ triangular iter 

 emarginato. Long. 1 in., \Q\ lin. $ $ . 



