192 
NOTES ON THE MARINE SHELLS OF WESTERN AUSTRALIA, 
WITH DESCRIPTIONS OF NEW SPECIES. 
PART Il. 
By Jos. C. Verco, M.D. (Lond.), F.R.C.S. (Eng.). 
[From “Transactions of the Royal Society of South Australia,” 
vol. xxxvi., 1912.] 
[Read October 10, 1912.] 
Puates XV. anp XVI. 
This paper is the second in the series, continued from 
p- 219 of vol. xxxv., 1911, and deals with the genera Hel- 
cioniscus, Patella, Nacella, Acmea, Phenacolepas, Haliotis, 
and Schismope. 
It embraces also a list of shells received from Geraldton. 
NG se Helcieniscus illibratus, Verco. 4b 
Helcioniscus illibratus, Verco, Trans. Roy. Soc., 8.A., 1906, 
vol. xxx., p. 205, pl. x., figs. 6-14; Hedley, Commonwealth of Aus- 
tralia, Fis eries, 1911, part 1, p. 93. 
King George Sound beach, 3; Ellensbrook, 9; Yallingup, 
4 (from these two localities the specimens have a more decided 
bluish-purple tint); Bunbury beach, 2; in 15 fathoms, 2; 
in 22 fathoms, 1 (about half as large again as the type); 
Rottnest Island, 1. of 
Patella neglecta, Gray. 71104 tee 
Patella_neglecta, Gray, Capt. King’s Survey of the Inter- 
prone and Western Coasts of Australia, ii., Appendix, p. 492, 
P. (Scutellastra} neglecta, Gray, Pilsbry, Man. Conch., 1891, 
vol. xiii., pp. 95, 96, pl. xx., figs. 41, 42, at lviii., figs. 40, 41. 
P. rustica, Linn, Menke, Moll. Nov. Holl., p. 33, 1848, and 
Zeitschr. F. Malac.,- 1844, p. 62. 
Patella melanogramma, (?) Gmelin, Sowerby, Genera of Shells, 
vol. i., p. 140. 
Patella zebra, Reeve, Conch. Icon., 1854, pl. iv., figs. 7a, 7b, 
“Swan River.” 
Locality. — Esperance beach, few; Hopetoun, few; 
King George Sound, Rabbit Island, many, and up to full 
size between water-marks; Hllensbrook and Yallingup, many ; 
Rottnest Island, 1. 
This species does not appear to come much further east 
than Esperance. It was not found on St. Francis Island, 
nor has it been taken along the coast of South Australia. 
On Rabbit Island it attains the length of 100 mm. . 
Nearly every individual exceeding 25 mm. in length carries 
