Oenern ami Species 0/ Coleoptera. 4S7 



ou each side, tlie first beliind the inidtUe, the posterior nearly at tlie 

 base and the sniaHer of the two; sciitelhuu triangular, below the level 

 of the elytra ; elytra obtusely elevated in llie middle, in-egularly covered 

 with coarse, deep punctures of varying size ; body beneath and leps steel- 

 blue, the latter dark(>r, finely punctured ; antenna? with the 7th joint 

 obconic, the succeedini,'- ones more or less transverse. Length 8 lines. 



Very distinct, on account of its uniform dark-blue colour, from any 

 of the nineteen species described in ^[. J. Thomson's Monograph. 



SiNonuM [Strongyliina)]. 

 Characteres ut in Strofu/i/Iio ; sed ocidi minores. Antennrc breviuscula*, 

 .art. quatuor ultimis transversis, clavam conipressani fonnanlibus. Tarsi 

 articulis, duobus ultimis exceptis, dilatatis, art. Icisali quum sequens 

 vix longiore, art. ultimo cieteris simul sumptis lequali vel longiore. 



To these characters it may be added that the three or four basal 

 joints of the tarsi are fringed with long hairs, and that the onychium 

 is very distinct. The type is Sinopium variahile^ Walker {Strongy- 

 Hum), from Ceylon. 



The two following genera of Tenebrionidse having been suggested 

 by M. Lacordaire, I have here given them names. 



Ageonoma [Zopherinae]. 

 Type, Ageonoma diaholica. 

 Nosoderma didbolicum, Le Conte, Ann. Lye. New York, v. p. 130. 



Differs from Nosoderma in having prothoracic canals for the re- 

 ception of the antennae, and in the mandibles being entire at the 

 apex, and from Zopherns in the labium and labial palpi being ex- 

 posed, the mentum broadest at the base, contracted ant(Tiorly, and 

 deeply emarginate at the apex, in the subperfoliate antenna), with 

 the 11th joint nearly obsolete, the absence of the transverse groove 

 on the last abdominal segment, &c. Lacordaire, Gen. v. p. 92. 



Zygas [Adelostominse], 

 T}'pe, Zyyas cimicoides. 

 Eurychora cimicoides^ Quensel in Schonherr, Sy.st. Ins. i. p. I.'i7, note. 



Differs from Steira in having the tliird joint of the antennae longer 

 than the first, and from Eurychora and Pogonohasis in the base of 

 the elytra being close to the base of the prothorax. Lacordaire, 

 Gen. v. p. 98. note. 



