110 



which in his paper on the OarahidcB of West Australia (P.L.S.,. 

 N.S.W., p. 499, 1898) Mr. Sloane has called E. henejicum, Newm. 

 I have not seen the true heneftcum from West Australia. 



E. fragile^ sp. nov. Testaceum, elytris macula basali (hac in 

 interstitio 4° sita) et notulis brevibus linearibus in inter- 

 stitiis 2° 4° 6" que sitis sicut ut notulse arcum interruptum. 

 communem formant (hoc ab e^ytrorum longitudinis medio 

 retrorsum directo) fuscis ornatis, abdominis segmentis prope 

 latera et apicem fusco-notatis, nonnullorum exemplorum 

 notulis fuscis nonnullis carentibus; capitis forma antennarum 

 insertione et oculorum granulis fere ut E. elegantis; pro- 

 thorace quam longiori ut \^ ad 1 latiori, antice parum. 

 angustato, canaliculato, cum capite subtiliter coriaceo sub- 

 opaco, lateribus modice arcuatis pone medium vix subsinu- 

 atis, angulis posticis obtusis quam E. gravis minus rejflexis, 

 basi media late leviter lobata, latitudine majori sat longe 

 ante medium sita; elytrorum striis interstitiisque fere ut 

 E. gravis ; tarsis ut E. fasciata^ Macl. (?) (ut supra descrip- 

 tum est). Long., 2^ 1.; lat., \^^ 1. 



This species is of somewhat fragile depressed appearance as 

 compared with its allies. It can be readily distinguished from 

 all the others described above except E. Jasciata^ Macl. (?) by the 

 structure of its hind tarsi, from the last-named species by its- 

 very much less transverse prothorax as well as by its different 

 elytral markings. 



South Australia (Sleaford Bay). 



The following is a tabulation showing the characters of the 

 species known to me of Ectroma. 



A. Head considerably longer than in the following 



species 

 AA. Head notably shorter. 



K. None of the tarsi have the fourth joint simple. 

 C. Apex of the elytra dark 

 CC. Apex of the elytra pale. 

 D. Joint 4 of the tarsi strongly dilated and at 



apex not emarginate ... 

 DD. Joint 4 of the tarsi less dilated, and at 

 apex emarginate (in some species feebly). 

 E. Sides of prothorax strongly and evenly 



rounded, not at all sinuate ... 

 EE. Sides of prothorax neither strongly nor 

 evenly rounded. 



F. Pronotum nitid, not coriaceous 



parvicoUey Blackb. 



clvicum, Newm. 



obnoletum, Blackb. 



elegans, Blackb. 



( tridens, Newm.(V> 



( beneficum, Newm, 



inquinata, Er.(?) 



FF. Pronotum subopaque, coriaceous 

 BB. Joint 4 of hind tarsi simple. 



C. This joint extremely short ... ... ... </raye, Blackb. 



CC. This joint notably longer. 



D. Prothorax very strongly transverse ... fasciata, Macl.(?> 



DD. Prothorax much less transverse ... fragile, Blackb. 



