SUB-FOSSIL CRTSTACKA^JS KTHERIUGK ANI> McCULLOCH. 13 



Mackophthalmus dkhressur, Rilppell. 



(Plate v., fio-R. 1-2: Plate vi., fi^. 2). 



Miirr<i/i/itliiil lints ilcjircxxnn, Kiippell, 24 Krab. Rotli. Meer., 

 1830, p. 17, pi. iv., tio-. H. /,/., Oitmaiiii, Zool. Jalirb., x., 1897, 

 p. 342. LJ., Aleock. .loni'ii. Asiat. Soc. Beno-al, Ixi.x. (n. ser.), 

 1900, p. 380. /'/., (irant & McCulIocli, Prnc. Linn. Soc. 

 N.S. Wales, xxxi., 1906, {>. 21. 



Mm-riiiilitliiil III ns nifiuis, (Tiierin, Mag. Zool., viii., 1838, p. 7, 

 pi. xxiv., tig-. 2. /-/.', Haswell, Oat. Austr. Crust., 1882, p. 88. 



Poni' fossil specimens do not diffei' fi'oni the I'ecent ones 

 recorded t'l-oni Queensland by Haswell as }f. nffiiiis, and Grant 

 and McCullocli as .1/. (/py;/v^^■.^v^s■. They all differ from the 

 orio-inal Hg-ure of ]f. nifinis however, in having the carapace 

 na.i'rowei' nt the outer orbital angles tha.n at the thii'd latei'al 

 tooth. For their identification as M. Jt^iin'sxyn we have relied 

 upon the desrrriptions of Ortniann aiul Alcock, Ruppell's orig-inal 

 description and figure not being available to us. 



The accompany iiiL;' figure of a recent example I'epresents a 

 typical Australian specimen from near Fremantle, Western 

 Australia. 



Loc. — Beach deposit at Tovvnsville, Noi'th-east Queensland 

 (Geol. Survey Q'land.— it*. L. /<«•/.•). 



Genus He.mipf-ax, Heller. 



HeMIPLAX LATIKRON.S, Hafurell. 



(Plate iv., figs. 4-5; Plate vi., figs. 3-4). 



Mucrcji/ithaliii as latifrons^ Haswell, Proe. Linn. See. N.S.Wales, 

 yi., 1881. p. 549, and' Cat. Austr. Crust., 1882, p. 90. 



