220 R. E. Lloyd : Marketable Fish from Akyab. [Vol. I, 



ELASMOBRANCHIA (SELACHII). 



CARCHARIIDi^e. 



1. Carcharias gangeticus. 



2. ,, laticaudatus. 



" Name Nga man ; common ; the fins are purchased by China- 

 men for export ; white fins fetch as much as one rupee per lib." 



ELASMOBRANCHIA (BATOIDEA). 



PRISTIDyE. 



3. Pristis cuspidatus. 



" Name Nga man sway they. Common from September to 

 March ; fins exported." 



Trygonid^E. 



4. Trygon uarnak. 



" Name Lcik chout ; common in the sea." 



5. Trygon walga. 



" Name Phat shay ; common in the sea ; a favourite food 

 fish." 



6. Pteroplatea micrura. 



" Name Htamanee ; common in the sea from October to March ; 

 highly esteemed as a food fish by the Arakanese." 



Myliobatid.^. 

 7. Aetobaiis narinari. 



" Name Swan shay ; common in the sea from October to Feb- 

 ruary ; esteemed as food by the Arakanese." 



It is interesting to notice that three of these rays are said to 

 be common onl}'- during the winter months. It is well known that 

 many of the tropical sharks and rays are viviparous and are fre- 

 quently caught pregnant during winter and spring (Alcock, Journ. 

 Asiat. Soc Bengal (2) 1890, and other papers). Their frequent ap- 

 pearance in the market at that season is most probably due to the 

 fact that they then come close to shore to produce their young, 

 winter being the season of calms in the Bay of Bengal. This view 

 accords with the well-established facts that the young of most 

 shore fishes are to be found close to the shore, and that they migrate 

 out to deeper waters as they grow larger (Mcintosh, " Scientific 

 Work on Sea Fisheries," Lecture i, The Zoologist, 1907). 



