1909.] 
N. Annandale : The Indian Cirripedia Pedimculata. 
71 
of the maxilla) one rather smaller bristle; the bristles internal to the excavation not 
very long, of different sizes. Mandible with five teeth (including the inner angle) ; the 
first tooth separated from the second by a space at least as great as that which separ- 
ates the second from the internal margin of the maxilla ; second, third, fourth and fifth 
teeth subequal ; the fifth directed outwards from the inner margin ; the base of the 
second distinctly but minutely pectinated on the outer margin ; the third similarly but 
less distinctly ornamented. 
Large specimens measure 9-10 mm. in length of capitulum. 
Habitat. — Off Akyab, Northern Burma: on Antipatharians growing in about 17 
fathoms (S.S. “Golden Crown,” January 1909); off Orissa, Bengal: on Antipatha- 
rians growing in 20 fathoms (S.vS. “Golden Crown,” February 1909). 
This form agrees in so many respects with Darwin’s Oxynaspis celata ‘ from 
Madeira that I cannot regard it as a distinct species. There are certain differences, 
however, which seem to justify its being considered a local race. I have therefore 
called it “ subspecies indica.” The chief points of difference between it and the typical 
form are, judging from Darwin’s description and figures : — (i) the basal arm of the 
Carina is much shorter than the vertical arm; (2) the concavity of the inner surface 
of the Carina is greater ; (3) the margins of the scutum and tergum are more strongly 
serrated; (4) the two rami of the second pair of cirri are subequal ; (5) all the cirri are 
curved. It must be remembered, however, that Darwin says that all the specimens 
he examined were in a bad state of preservation, and that, therefore, it is possible that 
his descriptions of the soft parts would have differed in detail had he examined 
fresh specimens. 
Subfamily LEPADINÆ. 
Key to the Genera. 
1. Valves covering practically the whole of the capitulum. 
{a) Lateral appendages not more than 6 . . . . Lepas. 
2. Valves reduced in size or absent, capitular membrane swollen. 
(rt) Lateral appendages numbering 12 or 14; no anal append- 
ages; at least three valves distinguishable . . Conchoderma. 
' Dr. W. T. Caiman of the British Museum has been kind enough to examine some specimens of the 
Indian form and to send me the following note : — “ The types qf Oxynaspis celata, or what I take to 
be the types — they are from Madeira and labelled in Darwin’s writing — are dried and include several 
separated valves stuck on a card. I have cleaned the valves of one of your specimens to compare with 
them. There are certain differences which may indicate that the species are distinct, although, without 
a larger series and more careful study, I should hesitate to state that this is so. The most obvious 
differences are that the scutum is more acutely produced above and the carina much wider and more 
deeply cupped than in the Indian specimen. Also the margins of the valves are less strongly toothed 
than in your specimen. Darwin’s figures of the separated valves give a very accurate impression of the 
type specimens and show the differences I have mentioned from yours .” — March ^rd, 1909. 
