/V. muvh-atis, however Lifts conception of these forms is identical with that of 

 Cotton * Gabriel {Proc Up. $oc Klc/.. 44 (2) h.j. ; 156 & 157, 1932) 

 I reduk cites their shell from Reedy Lake as being identical \v*th his V. ct'imo 

 The U'etrsunin Imhnncnxis (Conrad) is now known to be V ambiy'**'** 

 i Pluhppi) ; Cotton and Gabriel's Jlyrtrlcth h discarded (McMichael, Nfiuhhti 

 69 (lj\ 11). Gabriel, thus, includes true w\ attthif/uits as a synonym of his 

 H. nuslralis and it this is not /••'. tesiattis as used here, then it should he 

 ¥ ainiiiituus, in which case f would regard V ~ tc\hHus as a junior synonym 

 Unfortunately, on lbs basis of the usage of the name, Gabriel has included 

 Irediilc'f. ft- ausiralts" and his "//. orirm' : , but this >s incorrect. 



ALATHV.R1A, Ircdalc. Ar..; 63 (1034). ftf|>e, 4, jtifikMni Iredale.) 



.V ALATHYP1A JACKSON! lreda'.e 



JW4 i<J(k.uwi, AhUhyria Iredalc, /.r. : ri4, PI. 3, ft*. II & \K 4, fig. 11 

 1939. wivasi, Jivnctsfh Gabriel, /.r : 130, P\ % %, 39. 



River Murr.iy Tliw shell is not //. ony/oM and approaches nearest to 

 /J inrkxmti, while Ircdalc remarks that Cotton & Gabriel regarded "this 

 <?roup" (WAif/ivrfu) as Hxrulclht unjytrvf (Ueeve). citing Cranicirton. Gabriel 

 had not altered his views 



bubfannly: H VK I DELI 1 N> \E 



HYttiDELlA S^iu^ou, TtMtfi \fufo<\- ?S5 <1Moj. (Type : (.'/»<? 

 ausfrahs Lamarck == (/iur> ucpi'iincnxw Conrad, emended.) 



4. 1IYMDELLA AUSTRAUS (Lamarck) 



t$19 australis. Unw Lamarck, Anivi. s. i'ert. (Erf. I) 6: SU. 



1850. vaproncusif (sic), Uwo Conrad, P*oc> Awd .W. Sc>- PhiUul. 5 (I) 4 



10 

 1932. id. Prapchyrntelh Cotton & Gabriel, &ro£. AV>v. Sew. Vict. 44 (d) 



1934. id. J'ropAivtuiAt* Tredale, I.e. 73 

 1OJ0. i t i. Propeh\>ruldnt- Gabriel, it. : 131, PI. 4, fifc, 40. 

 1V55. fmstfvltx, Wyr></W/a>kMichack A'WtfJ Of /7>; I* (July). 

 Mitchell River, etc., Gippsland, 



5. HYRIDBLLA (UKAPE't A) ORION (Wale) 

 J 934. (auslrohsj tiriou, Hyridwiiu Irwlale I.e. : n9 



Jrcdalu's ii. tfrapetti replaces his H. austmii.t, accordingly //. mim hecomw 

 U subspecies ol h\ dfapffo'l it is said to conic froni I.ilydalc. 1 do not propose 

 lo discus the statu;* ui tins form. Trcdak* flitlCj 'a ni\\y adult specimen !? 

 a httle smaller, less wmged, the ^endncardmak less erec( and more rugose, 

 the anterior muscJc scars smaller, (he anterior rctrartor-ped>> pit notably <o,'' 

 One may appeal to authors not to use comparisons in original definition*; 

 they may he supplementary. The practice was heanily condemned a few years 

 ago by an authority dealinjii VStfa crustaceans, when iaecd with a particularly 

 unfortunate cxanijdf. 



6 HYR1DELLA RIINUTUS (lred.de) 

 1934. rcnutus, Hyridur.w Iredale, I r. : 09, PI, 5, %. 3, &- PI. 6, fig. 4. 



Latrobe Kieer; Tarra Creek, TanaviJle. Gabriel included several specie* 

 under P. cultifilifotmis, however Jredale examined a shell from Tarra Creek 

 which ft probably the basis o\ Gabriel's record from that locality 



