262 Mr. C. J. Gahan's <uhVttu)iiH to the 



gins of the pronotum. Elytra with small shining black granules 

 sparsely spread on the basal fifth or sixth, and extending on to the 

 summits of the two large tubercles or humps, which are placed — 

 one on either side — a little behind the base ; behind these tubercles 

 there is on each eljtron a large oblique depression, succeeded by 

 three broad irregular longitudinal grooves or depressions, which 

 form the intervals between the costaj. The elytra appear to be 

 without punctuation beyond a few scattered punctures near the 

 middle of their length. The dark patches are almost absent from 

 the basal fourth of the disk of the elytra, but there is a large 

 almost black patch extending from the base backwards on each 

 side below the shoulder. 



Orcodcra qffinis, sp. n. (PL XII., fig. 14), 

 Capite, prothorace, elytrisque basi et corpore subtus fulvo- 

 brunneis ; elytris pone basin albo-griseis utrisque plagis tribus 

 viridi-fulvis ; prothorace supra tuberculis duobus distinctis ; elytris 

 utrisque pone basin fasciculato-cristatis ; apicibus obliquiter trun- 

 catis fere rotundatis. Long. 12"5 mm. 



Hah. Guatemala, Coban in Vera Paz (Conradt). 

 Head, thorax, base of elytra, and under side of body clothed 

 with a fulvous brown pubescence. The rest of the elytra with a 

 close greyish white pubescence, interrupted on each by three 

 greenish or fulvous green transverse plagae or fasciae, the first of 

 which immediately succeeds the basal fulvous brown band, and 

 reaches the suture on the inner side ; the second, placed just 

 behind the middle, is more distinct, but does not reach the suture ; 

 the third forms a spot at the apex. The colour of these bands and 

 spots seems to be due to a fulvous brown pubescence laid on a dark 

 olive-green derm ; while the part of the derm covered by the 

 whitish pubescence is apparently of a testaceous colour. Near 

 the base of each elytron there is a short crest surmounted by a 

 tuft composed chiefly of fulvous hairs with a few darker hairs 

 behind. 



This species seems closely allied to O. costaricensis, 

 Thorns., from which it is to be distinguished by the 

 colours of the elytra, and by the more distinct basal 

 crest and tuft on each elytron. The punctuation also is 

 scarcely evident, except along the lateral margins of the 

 elytra. 



Acantliodercs piperatus, sp. n. (PI. XII., fig. 4). 

 Griseo-fulvescens, punctis numerosis fuscis maculatus ; pro- 

 thorace laleralitcr subacute tuberculato, supra bituberculato dense 



