THE BRACHIOPODA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 379 
The well-preserved examples fortunately possessed the dried-up remains of the 
brachize and other parts of the animal, by means of which a study of the spicule has 
been made possible. 
These latter bodies are entirely absent in the cirri as well as in the visceral 
membrane. In the arms the spiculz are very feebly developed and restricted to the 
hinder portion of the dorsal side. 
This species has some resemblance externally to some forms of the Magellanic 
Liothyrine referred to LZ. uva, but differs entirely from these in the extreme 
thinness of the adult shell, the smaller number of pores per square millimetre, and 
the difference in the form of the brachial support and the spicule of the arms. 
Owing to the many differences existing between this form and other known 
Liothyrinze, I venture to describe it as an entirely new species, to which I have very 
great pleasure in attaching the name of Professor F. Bhocumann, of Tiibingen, to whom 
all students of recent Brachiopoda are so much indebted. 
Macandrevia diamantina, Dall. (PI. I. figs. 15-19.) 
Dall, 1895, Proc. U.S. Nat. Mus., vol. xvii. p. 723, pl. xxx. fig. 5; pl. xxxii. figs. 3 and 6. 
» 1908, Bull. Mus. Comp. Zool. Harv. Coll., vol. xliii. p. 443. 
Hab.—Station 417; lat. 71° 22’ &, long. 16° 34’ W. (off Coats Land), 1410 
fathoms. March 18, 1904. Sea bottom, blue mud and stones. Temperature 29°°9 F. 
Obs.—A fair number of living adult examples of this interesting species were 
brought up in the trawl at the above station. Along with these were a few dead 
examples, badly broken, and a quantity of small fragments which would point to the 
fact that a large number of specimens had been broken up by the numerous pebbles 
in the trawl net. 
All the living examples were closely attached by their peduncles to pebbles of 
granitoid and other rocks, the pebbles varying in size from that of a hazel-nut to that 
of a walnut (see Pl. II. fig. 15). Some of the pebbles, especially the smaller ones, are 
worn almost round, while others are somewhat angular. However large the size of 
the pebbles, only one example of this species was observed on each. In several 
instances tubes of Serpulee are present on both valves. 
The specimens are very uniform in size and show no appreciable variation in shape. 
Sizes of some of the specimens :— 
Length. Breadth. Depth. 
18°5 16 9-5 mm. 
19 17 8°5 
19°5 16 9°5 
20 17:5 
20°5 15:5 10 
[ am quite unable to separate the Antarctic form from Datr’s species, as it agrees 
word for word with his description (op. cvt., p. 728). 
