326 Mr. F. P. Pascoe on some new or little-known 



forming a narrow club. Mentum large, transverse. Prothorax longer 

 than broad, subquadrangular, narrowed behind, sinuated in front, longi- 

 tudinally sulcated. Elytra subdepressed, carinated, scarcely broader 

 than the prothorax, and slightly rounded at the side. Legs rough, 

 moderately robust; tibia? fusiform; tarsi narrow; the claw-joint as 

 long as the rest together ; pro- and mesosterna simple ; post-intercoxal 

 plate broadly truncate anteriorly. 



Notwithstanding the small size of this insect compared with 

 Zojpherus and Nosoderma, there can be little hesitation, I think, in 

 placing it near those anomalous genera. Judging from the exami- 

 nation of the oral organs made in situ, they appear to offer only a 

 slight modification of those of Nosoderma, the mentum, however, 

 being considerably larger and in great measure hiding the palpi and 

 base of the maxillae, the part between its lateral margin and the 

 insertion of the antenna offering a deep cavity, as in that genus, for 

 the reception of its basal joints when that organ is in repose. The 

 propectus has no antennary canal at its side as in Zoplierus, in this 

 respect agreeing better with Nosoderma ; on the other hand, the 

 latter has only a ten -jointed antenna, but this is again modified by 

 the fact that N. obcordatum, Kirby, has eleven. 



Rhypasma pusillum. (PI. XVI. fig. 3.) 



R. obscure testaceo-brunneuni ; prothorace trisulcato ; elytris disco tricos- 

 tatis, costa intermedia abbreviata. 



Hah. Para. 



Dull testaceous brown, more or less sprinkled with a semicrystalline 

 exudation? head with numerous small granules, and having the 

 appearance of being originally covered with an earthy crust ; antenna? 

 covered with granulations, each tipped with a fine hair ; prothorax 

 with two curved longitudinal costa? on the disk, nearly meeting ante- 

 riorly, the lateral margins flattened and resembling the costa?, and like 

 them crested with a number of small closely set granules, the spaces 

 between the costa? and the margins respectively forming three broad 

 shallow grooves ; scutellum transverse, subquadrate ; elytra rounded at 

 the shoidder and at the apex, the disk with three strongly crenulated 

 costa?, the outer and inner united near the apex, the intermediate 

 ceasing at two-thirds the length of the others, the external margin also 

 forming a crenulated border, resembling the costa?, the spaces between 

 deeply and coarsely punctured ; legs covered with small asperities and 

 cilia ; body beneath rufous-brown, covered with numerous granulations. 

 Length 2 lines. 

 With reference to what is probably an exudation (renewable 



perhaps at the pleasure of the animal), it has the appearance under 



the microscope of small particles of brown sugar. 



