1898.] SEERicoRir ooleopteea op st. tinobnt. 327 



MlROSTEKlfUS. 



Mirosternus, Sharp, Trans. Ent. Soc. Lond. 1881, p. 526; Gorh. 

 Biol. C.-Am., Col. iii. pt. 2, Suppl. p. 349. 



Mirosternus is a genus of Dorcatomini, very nearly allied to 

 Cathorama, but distinct in having eleven joints to the antennae. 

 The basal joint is large and pear-shaped ; a little curved, the second 

 shorter, but much stouter than those of the funiculus, which are 

 six in number ; the third joint is a little longer than the five 

 following, which are very short. Of the three club-joints, which 

 are similar to those of Cathorama, the two apical joints are each 

 shorter than the ninth, which is hatchet- shaped, acuminate within. 



MiEOSTBEifUS L^vis, sp. n. (Plate XXVII. figs. 5, 5 a.) 



Oblongus, lateribus parallelis ; nigro-jpiceus fere, glaher, capite 

 prothoraceque i)erminute, elytris minutissime punctatis, pedibus 

 et antennis brunneis. Lonr/. 3 millim. 



Hah. St. Vincent ■ leeward side {H. H. Smith). 



This insect is not unlike Cathorama herbarium at first sight, but 

 it will on examination be found to be more parallel and narrower, 

 and also smoother, without any trace of the submarginal striae. 

 The head and thorax, although more shining, are in M. laivis 

 covered with small points, easily seen under a strong lens ; the 

 elytra are excessively minutely punctured, not in gemellate rows 

 (as in Cathorama), indeed it is scarcely possible to say the points 

 are arranged serially. The thorax is shorter than wide, its base 

 is bisinuate, not margined in any way. 



But one specimen has at present come under my notice ; it is, 

 however, in good condition. 



All the Mirosterni yet described have been from one or two 

 specimens of each. Dr. Sharp's species are from the Hawaiian 

 Islands. 



Peiotoma. 



Friotoma, Gorham, Biol. C.-Am., Col. iii. pt. 2, Suppl. p. 350. 



Priotoma is very close to Dorcatoma; it is separated by a very 

 different structure of the prosternum. The species have from eight 

 to ten joints to the antennae, but these are very difficult of 

 observation. 



Peiotoma beetis ? 



Priotoma brevis, Gorh. Biol. C.-Am., Col. iii. pt. 2, Suppl. p. 351. 



Hub. St. Vincent : leeward side (H. H. Smith). 



Priotoma brevis was described upon two examples from Bugaba 

 in the Isthmus of Panama, and the present insect is identical or 

 very closely allied to it. The elytra are punctured with very fine 

 rows, and are sparsely pubescent or pilose. The metasternum is 

 sparingly punctured, the punctures being distinct. 



Seven examples. 



