1478 COLEOPTERA 



behind. The scrobes begin near the apex, about one-third of the 

 length, they are very narrow, and are directed, almost at once, 

 towards the lower and front part of the head. Antenna rather 

 short. The scape reaches the middle of the eye, it is slender and 

 flexuous, but moderately abruptly clavate at the extremity. Funi- 

 culus 7-articulate, first joint subglobular, second short, 3-7 trans- 

 verse, each becoming a little broader. Club ovate, its short basal 

 joint so narrowed as to appear like an eighth joint of the funiculus, 

 apical joints short. Head short, a little broader than the rostrum. 

 Eyes subrotundate, not prominent, with coarse facets, placed some 

 little distance from the thorax, as much on the upper surface as on 

 the sides. Thorax truncate at base and apex, without ocular lobes, 

 evidently longer than broad. Elytra connate, of the same width as 

 the thorax at the base, which is finely margined, and closely applied 

 to the thorax, about twice as broad in line with the hind thighs. 

 Legs long, about equally, and widely, distant from one another. 

 Femora rather slender, grooved near the extremity. Tibia flexuous, 

 mucronate. Tarsi narrow, second joint transverse, third but little 

 broader, grooved above, but not bilobed, fourth about as long as the 

 preceding three ; claws bent, rather small. 



Prosternum rather long, obliquely incurved in front, and with a 

 median depression extending to the coxae ; these are prominent and 

 contiguous. Middle coxes globose, prominent, slightly separated; 

 the posterior distant. Metasternum of moderate length. Abdomen 

 rounded between the hind coxae, the basal segment rather larger 

 than the second, the intervening suture straight and rather deep, 

 third and fourth with very broad, deep sutures, not much abbreviated, 

 and, together, equalling the fifth in length. 



This is another curious form, not like any other with which I am 

 acquainted, and, perhaps, most nearly related to Ristheus. 



2557. R. granicollis, n.s. Glabrous, rufo-piceous, slightly 

 shining, antennae and tarsi reddish. 



Rostrum rather shorter than the thorax, arched above, finely and 

 indistinctly punctured. Thorax obviously longer than broad, sub- 

 cylindrical, not much broader near the middle than it is elsewhere ; 

 its sculpture consists of granular elevations ; on the middle, near 

 the front, there is a slightly - raised spot. Elytra of the same 

 width as the thorax at the base and for some distance further 

 back, they are afterwards dilated, so that the portion before and 

 behind the posterior femora is about twice as broad as the base, 

 the hind declivity is nearly vertical, the sides are inflexed ; the 

 basal margin, in the middle, is quite slender and entire, it is 

 thickened at each side, and, near the middle, this thickened part is 

 rather abruptly bent towards the suture, the large basal enclosed 

 space, which is depressed, looks like an exaggerated scutellum, it is 

 then more or less interruptedly prolonged to the apex ; the rest of 

 their sculpture consists of interrupted longitudinal ridges, the second 

 is most elevated, but not greatly, in line with the hind thighs, the 

 third on top of the declivity, but it is obsolete at the base and again 



