MEI.VILL AND STANDEX : MOI.LUSCA KROM FALKI-ANM> ISLANDS. 47 



water saturated with peat which flows over the beds when exposed at 

 low-tides" (R.V.). 



Mytilus magellanicus Chem. — On Kelp, near Hooker's Pond; 

 also from a beached hulk which had been moored for some time 

 previously in the harbour" (R.V.). 



Mytilus ungulatus L. — Perhaps too nearly allied to M. ediiHsl^., 

 which occurs with it, but far less frequently. "The 'whelk' {T. gever- 

 siaims) invariably attacks this species and M. edulis, leaving M. 

 tnageUaiiiciis untouched" (R.V.). On a hulk. 



Modiolarca trapezina Lam. — " Juvenile examples, in size from 

 3-5 mm. longitudinally ; are abundant on the fronds and stems of 

 Macrocystis at a depth of two fathoms. Large examples are found on 

 the various beaches, not uncommonly after southerly gales. A larger 

 variety, again, of a particularly dark olive-green, is found under similar 

 conditions, but full-grown specimens are always very difficult to pro- 

 cure, the steamer-duck {Brachyptenis micropterus), which abounds in 

 the harbour, diving for and eating them" (R.V.). 



Saxicava antarctica Phil. — On beach, at low water. 



Teredo palmulata Lam. — "This abounds in certain waterlogged 

 vessels, and old timber. It has been found necessary to sheath in 

 copper all submerged timber in this harbour, to protect it against the 

 depredations of this destructive mollusk" (R.V.). 



Chione (Omphaloclathrum) exalbida Chem. — " Occurs in 

 abundance in the various sandy bays in the harbour, especially at 

 Sparrow Cove, Port William. It is known to the Settlers as the 

 'Clam,' and is frequently collected for table purposes. It is usually 

 to be found buried a little distance in the sand." The largest example 

 in the collection measures 3*375 by 275 inches. 



Cryptodon falklandica E. Smith. — Low water, spring tides. 



Dates of Publication of Forbes & Hanley's " History of British 

 Mollusca." — This was issued in monthly parts each usually with four plates (dated). 



Vol. I., pp. I — 477 ( = Pt. I — 12), 1848; pp. i. — Ixxx., 478 — 486, and all 

 titles, 1853. 



Vol. II., pp. I— 480 ( = Pt. 13—24), 1849 ; pp. 481—557 (=Pt- 25, 26), 1850. 



Vol. III., pp. 1—320 ( = Pt. 27—34), 1850; pp. 321—616 ( = Pt. 35—42), 1851. 



Vol. IV., pp. 1—302 ( = Pt. 43— end), 1852. 



These dates are based on Wiegmann's Archiv f. Naturg. , 1849,1!., pp. 77 and 106; 

 1850, ii., p. 103; 1851, ii., p. 104; 1852, ii., p. 263; 1853, ii., p. 94, and an 

 incomplete copy with original covers in the possession of Mr. W. E. Hoyle, — 

 B, B, Woodward [Read before the Society, February 13, 1901). 



