BY H. J. CARTER. 47 



only marked distinctions given by tlie author (Trans. Ent. 8oc. 

 Lond , 18G8, p. 264) are the hisinuate thorax, with the angles 

 prominent, and the alveolate si-ulpture of the elytra; the other 

 distinctions are either slight or elusive. Of the marked distinc- 

 ticms, the first two are certainly found in //. intmlaritt Hope 

 ( = //. tW(/t>'cr><N Blackb.), and the last (the alveolate elytra) is 

 closely approacheil in the species described below {I /. /o renins). 

 I believe I have seen specimens of all the described species. If 

 I have identified //. i)ife)'ioris Blackb., correctly, in a specimen 

 from N.W. Australia, it is further distinguished by its strongly 

 punctate abdomen— a character shared to a less, and very 

 variable, degree by that widely distributed and most variable 

 species, //. orcus Pasc. Bates evidently did not sutticiently con- 

 sider the great variability in size, sculpture, shape of prothorax, 

 and convexity of form, that is to be noticed in examining long 

 series; so that, as he himself admitted in the synonymy of //. 

 oralis and H. ol)/o)iya, varieties have been described as species; 

 while Macleay described two species in a few lines, without 

 having seen the descriptions of Bates' H. sinuafleol lis* and H. 

 tarda (Trans. Ent. 8oc. New South AVales, p.285), 



The following are almost certainly synonyms : - 



//. gai/ndahensis Macl. = //. ob/o)ii/a Bates = //. oralis Bates 

 = (1 Up is crenata Boisd. ). 



H. opacicollis Macl. = //. sinuaticollis Bates = //. maryinata 

 Bates. 



//. iridfscens Blackb. = //. (Plati/notus) i)isularis Hope. 



The last has already been suggested by Champion. 



The descriptions of three new species will be found below. 



Table of Hypaulax. 



l(3)Klytra suleate, its lateral intervals sharply elevated. 



2. rronotuin opaque, lateral border little raised or thickened 



insulay-is Hope ; iridescens Blackb. 



S.Pronotuin nitid, lateral border strongly raised <ind thickened 



Spfuceri, n.sp. 



4(6)Elytra striate, intervals convex. 



5 First two stria^ deep, punctures obvious oralis Bates; ob^onga Bates; 



gayndaheiisis Macl.; {'i)crenata Boisd. 



