1914-] N. Annandale : Pedunculate Cirripedes. 275 



The Indian species are still imperfectly known, having been 

 recorded only from outlying groups of islands such as the Maldives 

 and the Nicobars. 



Lithotrya (Conchotrya) valentiana (Gray). 



Darwin, Mon. Cirr. Lepadidae, p. 371, pi. viii, fig. 5 (1851J. 

 Gruvel, Mon. Cirh., p. 104, fig. 113 (1905). 



Mr. Hornell took two specimens of this species in cavities 

 in limestone rocks on the shore of Churnah I. off the coast of 

 Baluchistan and has kindly presented them to the Indian Museum. 

 The original specimens were embedded in an oyster-shell from 

 the Red Sea^ and others have since been found in a similar position 

 at Zanzibar. 



L valentiana is distinguished from all others of the genus 

 by the absence of lateral valves. The rostrum is rudimentary 

 and the scuta, terga and carina lock together in an unusually in- 

 tricate manner. These characters are perhaps sufficient to justify 

 the retention of Gray's name Conchotrya as that of a subgenus of 

 which this species would be the type and, so far as is known, 

 the sole representative. The peduncle is normal in shape. It is 

 covered with minute chitinous tubercles and bears a transverse 

 suboval calcareous plate on its posterior surface at or near the base. 



Family Lepadidae. 



Subfamily Oxynaspidinae. 



Oxynaspis indica, Annandale. 



Oxynaspis celata subsp. iiidica, Annandale, Mem. Ind. Mas. II, p. 6g, pi. 

 vii, fig. 10 ( 1909). 



I think it best on the whole to recognize the Indian Oxy- 

 naspis as a distinct species, although it is closely allied to the one 

 from the Atlantic described by Darwin as 0. celata. It has a 

 narrower capitulum than that form and neither the shape of the 

 valves nor the structure of the appendages is quite the same. 



I was wrong [loC: cit., 1909) in differing from Darwin as to 

 the nature of the spiny covering of the shell in this genus. In 

 a young specimen recently examined the antipatharian has pro- 

 duced a flat, spiny growth over the valves, and from this growth 

 normal branches are actually given off at the tip of each tergum 

 of the cirripede, reaching a length of several millimetres. There 

 can, therefore, be no doubt that the external covering of the 

 barnacle is produced, not by the animal itself, but by the organ- 

 ism to which it is attached — as Darwin originally stated. 



0, indica occurs on both sides of the Bay of Bengal at 

 depths of from 15 to 20 fathoms. I have recently found two small 

 specimens on an antipatharian from ' Investigator ' station 464 

 (S. of Ceylon: lat. 5° 56' N., long. 75° 45' E. : 52-68 faths.). 



