68 NEW SPECIES OF TASMANlAN MOLLUSCA, ETC. 



western side of Frederick Henry Bay, in a rather exposed 

 situation, a short, thick-set banded form is plentiful. On 

 December loth of last year, I noticed they v/ere spawning 

 under fairly large stones. The egg capsules formed dense 

 masses, closely clustered together. The method adopted is 

 for single capsules to be firmly attached at some di.stance 

 apart ; then three or four others are fastened to the upper 

 edges of these, giving the combination somewhat the ap- 

 pearance of the growth of the prickly pear. The colo'ur is: 

 ivory-white, the stalks whiter. I present drawings, which 

 will give a better idea of the form than much descrip- 

 tion. The height of the single specimen is about 9 mm., 

 that of the cluster about 15 mm. 



PI. XVII., figs. 28, 28a. 



I can also' add to our list tlie following seven snecies 

 and one variety already described by various authors. 



1. Area metella, Hedley, P.L. Soc. N.S. Wales, 1917, p. 



681, PI. li., f. 36-37. About a dozen single valves 

 taken in 100 fathoms off Cape Pillar, and a few 

 from other places on our East and South Coasts, 

 from 10 fathoms downwards. 



2. Pseudarcopar/ia bofaniea, Hedley, Roy. S. N.S. Wales, 



1918, Supp. p. 27. This species seems confined to 

 our Eastern and Southern Coasts, where it takes 

 the place O'f P. virtorice, Gatliff and Gabriel, which 

 is found in Basg Straits, and perhaps does not occur 

 South East of the Furneaux Group, where I found 

 it in profusion. 



3. ZalajJais lissa, Suter, Crjdostrema, P. Mall. Soc, viii., 



p. 25, pi. ii., f. 10-11. A number of examples 

 taken in Frederick Henry Bay from kelp roots. 



4. Triphora mamiUata, Verco ; T. alhovittota , Hedley, var. 



mamillata, Verco, T.R.. Soc. S.A., 1909, p. 285. I 

 recorded this in these proceedings for 1910, p. 309, 

 as alhovittata, but our shells are Verco's variety, 

 which I consider is quite sufficiently distinct to be 

 given specific rank. It has also been taken in 40 

 fathoms off Thouin Bay. 



5. TxirriteUa atkinsoni, Tate and May, var. w edioangulata , 



Verco, op. cit., 1910, p. 125, pi. xxx., fs. 8-9. 

 Several from 50 fathoms Nox'th of Maria Island. 



