88 Records of the Indian Museum. [VoEvvVIL: 
measuring approximately 39 cm. in length, was captured in a 
large surface tow-net by the R.IM.S.S. ‘‘ Investigator.’’ The 
net had been shot at 6-30 p.m., shortly after the ship had been 
anchored for the night at a spot about 4 miles west of the en- 
trance to Hinzé Basin on the south Burma coast (97° 453’ E., 
14° 432’ N.) in about ro fathoms, and had been allowed to drift 
with the tide, being ‘kept on the surface by means of a bamboo 
float. 
How an animal, so obviously a bottom-dweller, had been 
carried or made its own way to the surface, must, I fear, remain 
a mystery. 
R. B, SEYMOUR SEWELL. 
BRACHIOPODA. 
NOTE ON THE DEVELOPMENT OF THE LARVA OF Lingula.—Up 
to the present time, of the various contributions to our knowledge 
of the development of the Lingula larva that have been published, 
only two can be considered in any way to approach completeness, 
to wit, those of Brooks! and Yatsu.” The accounts given by these 
two observers in the main agree very closely though differing in 
slight details, of which one of the most important is the length of 
the peduncle that is formed before protrusion from the shell takes 
place: according to Brooks the peduncle attains considerable 
length before it is protruded from the shell, whereas according to 
Yatsu only a short peduncle is formed. This difference may have 
been due either to the fact that Vatsu’s specimens were kept in 
captivity during the latter part of their development or to a 
specific difference in the larvae obtained, those of Brooks’s being 
the larvae of Glotidia pyramidata, whereas Yatsu’s examples were 
those of Lingula anatina. 
During the months of December and February, 1911, several of 
these larvae were captured in the surface tow-net off the mouth of 
Hinzé Basin and the neighbouring waters of the south Burma coast 
about four miles from shore and as they differ in one or two parti- 
culars from the previous accounts it has been thought that a brief 
account of these discrepancies may be of some little value. 
The chief differences noted are two in number :-- 
1. Thestage of formation and protrusion of the peduncle.— 
Both Vatsu and Brooks agree in stating that the peduncle first 
makes its appearance at the end of the 6-, or commencement 
of the 7-pairs of cirri stage, and the former observer found that 
in his specimens, in captivity, protrusion took place at the com- 
mencement of the Io p.c. stage. The youngest specimens ob- 
tained by me in December had already reached the 9 p.c. stage 
1 W. K. Brooks, ‘‘ The development of Lingula and the systematic posi- 
tion of the Brachiopoda,’’ Chesapeake Zool. Lab. Scientific Results of the Session 
of 1878, p. 35. Baltimore, 1879. 
2 N. Vatsu, ‘‘On the development of Lingula anatina,’’ Journal of the 
College of Science, Tokyo, vol. xvii, art. 4. 
