522 ME. GUT A. K. MAESHALL ON COLEOPTEEA 



ISOTOCEEUS TENUIPES. 



Isotocerus tenuipes Faust, Stett. Ent. Zeit. 1898^ p. 147. 

 Mimika River ; 1 J . 



ISOTOCEKUS AFFINIS. 



Isotocerus affinis Faust, Stett. Ent. Zeit. 1898, p. 147. 

 Mimika River ; 1 $ . 



Isotocerus sp. 

 Mimika River ; 1 ? . 



Dysopiehinus costatus, sp. n. (PL XXXIX. fig. 1.) 



cj . Niger, opacus, squamis griseis et briinneis sparsim indutuSj D. gestroi Roe]., evidenter affinis, 

 sed multo major, rostro ad latera evidentius utrinque bisulcato, in medio non carinato ; pro- 

 thorace carina mediana postice magis extensa ; elytris ante apicem magis impressis, puiictato- 

 sulcatis, punctis minoribus, iiiterstitiis alternis elevatioribus, prirao et tertio latioribus 

 subbiseriatim granulatis, granulis postice obsoletis, lioc prope basin magis elevate, sed costa 

 basin ipsum non attingente, iuterstitiis 2 et 4 planis angustis vix grauulatis, 5-7 serie 

 granulorum una prseditis ; tibiis posterioribus ad apicem setis nigris fasciculatis. 



Colour dull black, with sparse grey and brown scaling. 



Head with scattered shallow punctures, two of the lateral rostral cariniE ascending 

 the forehead and uniting to form an obtuse central elevation above the eyes, a very 

 deep fovea between the eyes. Bostrum moderately closely punctate above, with two 

 distinct sulci on each side separated by a narrow carina, the central line punctate and 

 not carinate. Antennce as in the type-species, D. gestroi. Protliorax subconical, as long 

 as its basal width, broadest at the base, the sides slightly rounded, the basal margin 

 bisinuate and with a large granule on the central projection, the whole surface closely 

 set with granules, except the apical ai"ea and a shiny central carina which extends from 

 the front margin for three-fourths the length, each granule with a depressed dark 

 scale-like seta. Elytra elongate-ovate, parallel- sided from the shoulders to beyond the 

 middle, evidently impressed laterally ■ before the apices, which are jointly rounded ; 

 punctato-sulcate, the alternate intervals more raised, interval 1 elevated at one-fifth 

 from the base to the declivity, the raised part with a double row of granules ; intervals 

 2 and 4 narrow, plane and scarcely granulate ; 3 most strongly elevated near (but not 

 at) the base and diminishing to beyond the middle, the raised part with two rows of 

 granules, the apical part plane and not granulate ; 5-7 each with an almost complete 

 single row of granules, 6 being a little lower than the other two ; 8 granulate to 

 beyond the middle, 9 granulate to the middle, and 10 at the base only. Legs elongate, 

 the femora rather rugosely punctate, the posterior pairs of tibiae with a fascicle of 

 recumbent black setse on the exterior side at the apex. 



Length 17, width 7 mm. 



