COLEOPTERA 511 



Acriliis 1))' the broadness of the front and middle tibiae, the former (PI. XV. fifr. 35) 

 especially being v^ery broad. The original diagnosis is as follows : — 



"Breviter ovalis, convexus, ferrugineus, sat crebre et fortiter i)unctatus; mesosterno 

 breve, punctato. Long, i mm." 



Head microscopically rugulose with fairl)- numerous punctures, fronto-clypeal suture 

 not distinct. Prothorax with numerous moderately strong punctures, with a slightly 

 arcuate median transverse chain of punctures before the base, the area between this and 

 the base also punctured ; the base forms a rather prominent median angle. Punctures 

 on the elytra strong and not \er)- close on the disc, smaller and dense apically. 

 Characteristic of both thorax and elytra is the presence of punctures of more than 

 one size, very minute ones lying in the interspaces between the larger ones. Pygidium 

 much deflexed, narrow, closely punctured. Prosternum strongly punctured, about i| 

 times as long as the breadth at the base of the keel ; the striae on either side of the 

 latter are onl)- present in the basal portion ; anteriorly the keel is not marked off 

 from the side parts of the prosternum, and only the outer striae are present. IMeso- 

 metasternal suture impunctate, almost straight; immediately before it, on the mesosternum, 

 a slightly arcuate chain of coarse punctures. Metasternum coarsely punctate at the sides, 

 punctures obsolete in the middle. First abdominal segment coarsely punctured. Di- 

 verging striae curved up behind the coxae. Wings not examined. 



Hai;. Oahu, near Honolulu (Blackburn). 



(2) Bacaiiiiis confiisiis. Blackburn. 



Bacaniits con/iisiis Blackburn, Tr. Dublin Soc. in. 1S85, p. 129. 



Known only from a single specimen obtained by Mr Blackburn, which I have 

 examined. Smaller than J), atoiuarius, and less strongly punctured. On the median 

 part of the elytra there are fine striae or wrinkles curving in towards the suture ; on the 

 apical part the punctures are stronger. There is no definite series of punctures, or any 

 special sculpture, at the base of the thorax. Wings not examined. 



Hab. Oahu (Blackburn). 



AcRiTUS Leconte. 



Acritus Leconte, P. Ac. Philad. \ r. 1S53, p. 288: Horn, P. Amer. Phil. Soc. 

 XIII. 1873, p. 352. 



Aeletcs Horn, T. c. p. 356. 



Acritus Lewis. Biol. Centrali-Americana. Coleoptera (11.). p. 23S, 1888. 



This genus is characterised by the presence of only four joints in the hind tarsi, 

 the long basal joint appearing as if formed by the fusion of two joints. Horn (I.e.) 

 distinguished between those Acriti with a visible scutellum, and those with no \isible 



F. H. in. 66 



