Capt. P. P. King's South American Coleoptera. 459 



*106. ScoTOBius ASPERATUS, Erichs. Nov. Act. Acad. Nat. Cur. vol. xvi. Supp. 



p. 247. 



From Valparaiso. 



This I take to be the aS". rugosulus of Solier. With regard to S. rugosulus 

 and some allied species, it appears to me there is some confusion. M. Guerin, 

 who first described the former, says that the thorax is rugose, its form being a 

 well-marked hexagon, with the sides angulated and margined ; that the ridges 

 on the elytra are rugose, and that the underside and legs are rugose, the latter 

 tolerably stout. Now M. Solier says of his S. rugosulus, that the thorax is 

 more entire on the lateral margins, and a little less margined than in his S. 

 Gayi ; that the back is covered with deep punctures, squeezed and separated 

 by irregular shining intervals, larger at the centre than upon the sides, and 

 not at all granulated; the ribs on the elytra of the interstices narrower and a 

 little less elevated than in S. Gayi; the posterior tubercles smaller and a little 

 more pointed ; the legs evidently less robust, with the thighs strongly /)Mnc^arerf. 

 It appears therefore that M. Guerin's S. rugosulus has the thorax, ribs of elytra 

 and legs rugose, viz. granulated, and that the thorax and legs of M. Solier's 

 S. rugosulus are punctured. 



*107. SCOTOBIUS BULLATUS, Curt. 



Obscur^ niger, rugosus, latus, brevis, capite thoraceque punctatissimis ; hujus 

 angulis posticis acutis, elytris punctato-striatis : porcis in intervallis niti- 

 dis granulatis ad apicem tubercula distincta efformantibus : seriebus 2 

 costalibus remote tuberculatis. 



Length 6| lines, breadth 3^. - 



Dead-black ; antennae very short, 2 basal and apical joints and palpi ferruginous : clypeus 

 and head thickly and coarsely punctured, the former slightly concave in front, with a 

 transverse suture, the extremities of which are hooked : thorax more than twice as 

 broad as the head, transverse-orbicular, concave before, the angles rounded ; straight 

 behind, the angles forming a minute well-defined tooth ; the sides perfectly convex and 

 delicately reflexed, the entire surface thickly and strongly punctured with irregularly 

 crowded punctures ; an obscure impression down the middle, and an indistinct fovea 

 on each side ; scutel short and broad : elytra much broader than the thorax, very ovate, 

 the apex attenuated and slightly margined, the back is transversely wrinkled, and there 

 are 6 lines of punctures on each elytron ; there are also 7 narrow slightly-elevated 



