Boone, Mollusca, Cruises of "Ara'' and "Alva"' 307 



Megalatracttts aruanus, Hedley, C, Proc. Linn. Soc. N. S. W., 

 1900, vol. XXV, p. 99; also p. 509, pi. 25, fig. 18 (nomen- 

 clature, eggs). — Kesteven, H. L., Mem. Sydney, Austral., 

 Mus., 1899-1907 ("Thetis" Exped.), vol. IV, pt. 8, May 2, 

 1904, p. 417, pi. 39, figs. 1, 3 and 5, pi. 40, fig. 2, pi. 41, fig. 2, 

 pi. 42, figs. 1, 2, text fig. 119, 120 (protoconch) ; Proc. Linn. 

 Soc. N. S. W., 1905, vol. XXX, p. 326 (additional study on 

 the young stages) . — Hedley, C, Proc. Sec. D, Rept. Austral. 

 Assoc. Adv. Sci., Brisbane, 1909, vol. XII, p. 365. — Thorpe, 

 W. W., Austral. Mus. Mag. Sydney, July-Sept., 1928, vol. Ill, 

 No. 7, p. 236, fig., "photo by Whitelegge," same page. 



Family: VOLUTIDAE 



Genus: CYMBIUM de Montfort 

 Cymbium flammeum Bolten 



Plate 119 



Type: Bolten's entry (1798, p. 151) cites: "1899—3 C. fiayn- 

 meum. Die bunte Tepel -Bake. Martini 3 t. 74, f . 780, 4 st." The 

 Bolten collection, originally in Hamburg, was sold in parts, after 

 Dr. Bolten's death. 



Distribution : This species leads a lazy life in the little pools 

 floored with sand among the coral reefs. In such a pool the pres- 

 ent series of nepionic shells were found. It is common on the en- 

 tire coast of Queensland, having been recorded from Moreton 

 Bay, Masthead Island, Dunk Island, Cape Grafton, Cape Bed- 

 ford, Torres Strait and the Gulf of Carpenteria (Hedley). It is 

 also found in the Philippines (Cuming, Reeve) and New Guinea. 

 It was not taken by the "Siboga" during her extensive explora- 

 tions in the Dutch East Indies. 



Material examined : A large mass of nidamental capsules, 

 containing the nepionic shells, apparently of Cymbium flainmeum 

 Bolten were taken at Southport, Australia, September 23, 1931, 

 by the "Alva." 



Remarks : The young shells are unequally developed through- 

 out the mass and are nearly ready to escape from the capsules. 



