THE BRACHIOPODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 387 
BLocHMANN (1912) has referred to one of these specimens in dealing with a 
probably new species of Wagellana obtained by the Swedish South-Polar Expedition 
at the same locality (Burdwood Bank), and remarks on its correspondence with his 
described example, with the exception that whereas the Scotva specimen possesses 
a distinctly pronounced angulation of the beak, his Maugellania specimen exhibits no 
such character, the sides of the beak being well-rounded, without. any indication of 
an angle, 
From the thickness of the test he is inclined to regard the form as a possibly new 
Terebratella. 
Magellania venosa (Solander). 
Anomia venosa, Solander, 1788, Dizon’s Voy., p. 355, pl. x1. 
Waldheimia venosa (Sol.), 1886, Davidson, Mon. Recent Brach., p. 49, pl. viii. figs. 1-5 ; 
pli ix, figs. 
Eudesia venosa (Sol.) 1889, Dall, Proc. U.S. Nat. Mus. vol. xii. p. 231. 
Magellania venosa (Sol.), 1892, Fischer and Oehlert, Bull. Soe. @hist. nat. Autun, vol. v. 
p. 312, pl. xi. figs. 7-16; pl. xii. figs. 1-17. 
5 , 1909, Dall, Proce. U.S. Nat. Mus., vol. xxxvii. p. 279. 
% 3 1912, Blochmann, Die Brach. der Schwed. S.-P. Exped., Bd. vi. 
(Zoologie ii.), No. 7, Stockholm, p. 9. 
Hab.—Station 346 ; lat. 54° 25’ 8., long. 57° 32’ W. (Burdwood Bank), 56 fathoms. 
December 1, 1903. Sea bottom, Bryozoa. Temperature 41°°8 F. 
Obs.—Amongst the young examples obtained from Cephalodiscus dredged at this 
station are several which appear to be referable to the above species. One or two of 
these examples are less than 3 mm. in length. 
One specimen, which measures 4 mm., shows 256 puncte per square millimetre ; 
another, 6 mm. long, shows a range from 240 to 256 puncte, both examinations being 
made about the middle of the ventral valve. 
In M. venosa, according to BLocHMANN (1912), the perforations per square millimetre 
range from 240 to 280. 
The various specimens are interesting as showing some of the very early stages in 
the development of the brachial support of this species, which were first made known 
through the admirable work of FiscHER and OEHLERT (1892). : 
The geographical range of M. venosa is very much the same as that of Terebratella 
dorsata, with which it is often accompanied. 
It has been met with abundantly by many expeditions in the neighbourhood 
of Tierra del Fuego (35 to 80 fathoms); Magellan Straits (7 to 20 fathoms), and 
Falkland Islands, where the largest specimens, so far known, were obtained by Rear- 
Admiral Sunivan in 18438, near Fort William, in 6 to 7 fathoms (see pl. viii. 
figs. 2 to 2c, Davipson, Rec. Brach.). 
The species is recorded also from the west coast of Patagonia (from 1 to 30 fathoms) 
and from Coquimbo, Chili. 
