CIRRIPEDIA. 143 



Scalpellnm subflavumj ANN AND ALE (15). 



This species belongs to the section of its genus with perfectly calcified valves and a 

 simply bowed carina, as do all the species which have the first of these characters 

 that have been recorded from the immediate neighbourhood of India. 



It is almost as commonly found in the deeper parts of the Bay of Bengal (especially 

 in the Andaman Sea) as is S. squamuliferum, but is rarer because less gregarious. 

 More than two individuals are seldom found together. I have examined several 

 specimens from the Gulf of Manaar. 



BALANID.E. 

 Chelonobia testudinaria (L.). 



THURSTON (7) records this species from Rameswaram Island, and there are specimens 

 (on the carapace of Chelone imbricata), which are probably from the Gulf of Manaar, 

 in the Indian Museum. 



Ch. testudinaria appears to be found most frequently on turtles, in all warm and 

 temperate seas, but not to be confined to any one species ; indeed, it has been 

 observed on the shells of molluscs. GRUVEL (11) has recently described a species 

 of the same genus from the skin of Manatus scnegalemis under the name Ch. manati. 

 I could obtain no evidence during a recent visit to the Gulf of Manaar that 

 Barnacles are ever found on Halicore there.* 



Creusia spinulosa, LEACH. 



This species is recorded from Ceylon by WELTNER (5). I have examined specimens 

 from Mergui on the lower surface of Turbinaria crater. They are of considerable 

 size and have their shell covered by a thin layer of coral. In some specimens not only 

 does the opening remain patent, but the junction between the basis and the shell, and 

 even the divisions between the compartments, are visible on the surface, the former 

 as a clear-cut line, not merely as a rounded furrow. The coral appears to have grown 

 over the base and then to have commenced to climb the shell at one point, as much 

 as possible avoiding narrowly all the depressions upon it, thus protecting the Barnacle 

 without injuring it. Nevertheless, some examples of the Barnacle have been completely 

 engulfed by the coral and so have perished, or else, having perished, have been 

 engulfed. 



*Pyrgoma conjugatum, DARWIN. 



Localities : Coral reefs off Ceylon. 



There are numerous specimens on fragments of Turbinaria evidently collected in a 

 living state. Even when completely imbedded they can be recognised by the form 



* They occur, however, on the Dugong in Australian waters (see DEXLER and FREUNDE, ' Amer. Nat.,' 

 xl., 469, p. 69, 1906). 



