242 Longicornia Malayana. 



spots ; liead nearly impunctate ; prothorax with a few coarse 

 scattered punctures, three whitish stripes on the disk, the lateral 

 one passing through the spine, another stripe below it, the spine 

 long and very slender, no impressed line anteriorly ; scutellum 

 subtransverse, truncate posteriorly ; elytra longer and narrower 

 than in the preceding, less elevated at the base and less convex, 

 each with four, five or six largish dull-white spots at the side, 

 the one at the shoulder being sometimes broken up into two or 

 three, the apex of each elytron slightly emarginate, comparatively, 

 and terminated at each angle by a short broad process, the outermost 

 being only slightly continuous with a keeled line, which extends 

 nearly to the base of the elytron; body beneath dark chesnut, 

 shining, the sides partially pubescent ; legs and antennae pale 

 greenish, tinged with red, especially the tarsi, and covered with a 

 very scanty pubescence. 

 Length 4| lines. 



DiALLUS. 



Characteres ut in Cereopsio, sed antennce articulo tertio scapo 



breviore ; prothorax dorso regulari, spina laterali retrorsa ; 



ehjlra apicibus rotundatis ; et mesosternum latum, antice trans- 



versim dilatatum, 



A sufficiently distinct genus, easily distinguished from Cereop- 



alus, as well as from Oihelats and Otroca, which it also resembles in 



habit, by the short third joint of the antennae. The prothoracic 



spine, although directed backwards, is not recurved as in Othelais. 



The cicatrix on the scape is smooth and shining. The species are 



tolerably homogeneous, rather below the middle size and spotted 



with white on a dark ground. 



D'lallus lachrymosus. (PI. XII. fig. 5.) 



D. niger, subnitidus ; prothorace elytrisque albo-maculatis. 



Hab. — Tondano. 



Black, slightly nitid, glabrous above, numerous distinct spots 

 on the head, prothorax and elytra composed of a white tomen- 

 tum ; head without punctures ; prothorax and elytra strongly 

 punctured, the former with eight spots, two on each side and four 

 median ; scutellum quadrate, edged posteriorly with white ; each 

 elytron with two slightly raised lines, the inner more marked and 

 extending to the apex, and about twenty spots, irregularly ar- 

 ranged ; body beneath, legs and antennae with a thin whitish 

 pubescence. 



Length 5h lines. 



