Longicwnia Malayana. 541 



head witli a gray rougMsh pile, whicli, however, is nearly 

 absent between the eyes ; prothorax ovate, roughly 

 punctured, the intervals partially granulate, without a 

 median line ; scutellum rounded behind, covered with a 

 fine whitish pubescence ; elytra more coarsely punctured 

 at the base, the punctu.res bearing hairs, which are much 

 more numerous posteriorly ; body beneath, slightly 

 pubescent ; legs luteous, with long flying hairs, femora 

 very stout, glossy ; antennae with the scape nearly cylin- 

 drical. 



Length 8 lines. 



Dl ATOMOCEPHALA . 



Blatomocephala, Blanchard, Voy. au Pole Sud, p, 266; 

 Lacordaire, Gen. viii. 354. 

 Arlwijalus, JSTewman, Entom. i. 223. 



Caput antice breve, fronte hand lamellifera ; tuberibus 

 antenniferis obsoletis. Oculi supra vix approximate 

 Antennce in utroque sexu corpore pauUo longiores, 

 pubescentes ; scapo cylindrico, articulo tertio quinto 

 eequali, quarto tertio breviore, quinto et sequentibus 

 fere gequalibus. Prothorax lateribus rotundatus. 

 Elytra subparallela, apicibus rotundatis. Pedes me- 

 diocres ; femora fortiter clavata, hand pedunculata ; 

 tai'si postici et intermedii aequales. Prostermmi 

 depressum. Mesosternwn declive. 



Since M. Lacordaire has made the relative thickness of 

 the femora the starting* point of his tabulation of the 

 genera of this sub-family, I have been compelled to adopt 

 this genus which I had formerly held to be synonymous 

 with Ceresium. The difference, like that of the anten- 

 nary tubers, is comparative, well marked in extreme 

 forms, but passing insensibly into one another. In D. 

 alhifrons the scape is exceptional, being rather pyriform 

 than cylindrical. The type, D. simjjlex, does not seem 

 to have been found by Mr. Wallace. 



Diatomocepliala diversa. 



D. nigra, nitida, pilis numerosis griseis vestita ; an- 

 tennis pedibusque luteo-testaceis ; femoribus sat 

 elongatis, validis. 



^0.5.— Menado. 



Black, shining, with numerous gray adpressed hairs, 

 not contiguous, but enough to give the upper surface a 



