COLEOPTERA 



247 



elytra are shining, blackish, with the suture and outer margin red, but not red at the tip ; 

 the eight striae are entire and very deep. The under surface entirely red. 



We have only two examples of this species but it is clearly distinct from any other, 

 and seems to come very naturally between M. angiisticollis and M. bradycellinus. 



Hab. Molokai, 4000 ft., June 1896 (Perkins). 



(9) Mecyclothorax bradycellinus, sp. nov. 



Sat elongatus, nitidus, rufus, thorace medio et disco elytri singuli picescentibus ; 

 thorace fortiter transverse, lateribus rotundatis, angulis posterioribus perfectis sed 

 subobtusis ; elytris profunde striatis, striis punctatis. Long. 4^ mm. 



Plate VII. fig. 5. 



This is another peculiar and distinct species ; the seta at angle of the thorax is but 

 small, and the orifice it leaves on removal from the hind-margin is so slight that the 

 species may without a careful examination be only too probably referred to Thriscothorax. 

 The thorax is very strongly transverse, but little narrower than the elytra, a good deal 

 rounded at the sides and narrowed behind, but without constriction ; the anterior im- 

 pression definite, the median channel continued to the base ; the sides are much spread 

 out, but not much turned up ; their colour is much more dilute than the picescent middle 

 parts ; the base moderately punctate. Elytra rather long, each picescent or black with 

 the suture and margins red ; the striae are very deep, and all the eight are entire from 

 the base to the extremity : they are distinctly punctate or crenate. Three specimens. 



Hab. Molokai, 4000 ft., June 1896 (Perkins). 



(lOj Alecyclothorax laetiis, sp. nov. 



Rufus, elytris (marginibus exceptis) interdum picescentibus, antennis, palpis pedi- 

 busque testaceis ; prothorace ad basin breviter constricto, angulis posterioribus perfecte 

 rectis ; elytris subtiliter striatis, striis subtilissime punctatis, externis perobsoletis ; 

 antennis pedibusque brevibus. Long. 4 — 4^ mm. 



Allied to J\l. koiianiis and cyinindiciis though with very different sculpture. 

 Antennae short, yellow. Head rather narrow. Thorax with the base narrower than 

 the front, with the sides rounded and sinuate behind, so that there is present a distinct 

 basal constricted part ; the transverse anterior impression is obsolete, the median channel 

 distinct, the base flat and but little punctate. The sides and suture of the elytra are 

 paler than the discoidal parts ; the striation is very fine, but even the seventh stria can 

 be detected. A small series. 



This must not be confounded with M. ntsticns, which has no constricted base of the 

 thorax, and has also the punctures of the elytral striae much coarser. 



The species has an extreme resemblance to Thriscothorax lactns, but it usualK' has 

 the base of the thorax more distinctly constricted : this character is however variable, 



F. H. III. 32 



