126 BURMA, ITS PEOPLE AXD PRODUCTIONS. 



the appearance of a cake covered with a coat of white sup^ar. Tliis oyster is edible 

 and pleasant when it lias been gathered from spots freely covered by the waves, but 

 is veiT a])t to prove unwholesome, if not poisonous, when gathered from spots where 

 it is left exposed to the sun and air for several successive hours. In some spots on 

 the Arakan coast I have noticed this species growing where in my opinion it could 

 never have been submerged for more than two or three hours consecutively by spring- 

 tides, and must have remained for perhaps days without opening its valves, save to 

 receive casual spray. 



* ,, ciKctuisuTA, Gould. 



* ,, ^-IGEOirAEGINATA, SoW. 



The specimen figured under this name in the Conchologia Iconica, PI. xxxiii. 84, 

 was obtained by myself between tide-marks on the Arakan coast near Baumi. It 

 occurs sporadically on the rocks, and some specimens are bai'cly distinguisliable from 

 the European 0. eiliilis. It is in my opinion a dwarf vaiiety of the next species, 

 reduced in its proportions by the fact of its growing in spots unsuited to it, that is, 

 between tide-marks. 



The Burmese call these middle-sized oysters ' kameh.' 



* ,, Talienwahexsis, Crosse (?). 



The ' creek ' or ' rock-oyster ' or ' kama ' of the Burmese. 



This species, which much resembles the fossil 0. lin(jula. Sow., was doubtfully 

 referred to Crosse's species by my deceased friend Dr. F. Stoliczka. It attains to 

 Dearly a foot in length, and flourishes in compact masses just below the level of low 

 spring-tides, duiiug wliich period it is sought for by men aimed with iron bars to 

 detach it from its anchorage. As food, this species is wholesome and good, but rather 

 too large to bring uncooked to table ; but if not so sightly as the smaller species, it 

 may be always more thoroughly relied on (^ride Theobald, Raised Oyster Banks, 

 Records, Geological Survey of India, vol. v. p. 111). 



*Lopu:a htotis, L. 



Cockscomb oysters. Shell strongly ribbed. 



Family Spondylidae. 



Shell in-egular, attached by the right valve ; riljJjcd, spiny or foliaceous. Teeth 

 two in each valve. Ligament internal. 



Cardinal area divided by a groove and enlarging witli age. 



*SpoxDrLus cocciNEUS, Lam. 

 *• ,, LONGispiNA, Lam. 



* ,, ZONALIS. 



Cardinal area indistinct. 



■""Plicatdxa depiiessa, Lam. 



* ,, AUSTRALis, Lam. 



Family Pectinidse. 



Foot small, cylindrical, with a byssal groove. Ligament wholly or partly internal. 



Peciex. 



Shell equivalve, ribbed. The anterior auricle larger, the right one with a byssal 

 Binus. The foot is used chiefly as an exploring organ, and to anchor the animal 

 when required, by a temporary byssus. The young swim freely in a zigzag 

 manner by opening and snapping their valves. (A<lams.) 



* ,, suPERBUs, Eeeve. 



* ,, rALI,IU.M, L. 



CiLLAMTS AJLBOLiKEATUS, Sow. Andamans. 



