﻿634: ME. L. V. DALTOX ON THE [I^OV. I908, 



Is'lJMMrLITES Sp. 



A small lenticular single individual, in conglomeratic sandstone 

 with quartz-pebbles. E,esembles the young of jS\ Beaumonti. 

 Locality. — 2 miles south by east of Magyisan (Minbu district). 



CCELEXTEHATA— Anthozoa. 



PAEACYATHrS Sp. 



A small simple coral, with expanding base and numerous septa, 

 appears to belong to this genus. 



Locality. — A mile south-east of Magyisan (Minbu district). 



Hydrozoa. 



Small globular bodies (2 to 5 millimetres in diameter), making 

 up the greater part of a thin bed of limestone, at first sight 

 resembling foraminifera. On microscopical examination, they 

 reveal a structure which seems to unite them with the Hydrozoa, 

 and indicates a possible relationship to the genus ParTceria^ 

 Carpenter, from the Cambridge Greensand. Further research is 

 required iDefore a completer identification can be attempted, and 

 for the above opinion the author is indebted to Mr. E. Bullen 

 K"ewton, P.G.S. 



Eemark. — The rock yielding these organisms contains also 

 various small foraminifera, including Ojjerculina canalifera (?). 



Locality. — Half a mile north-west of Kyetubok (Minbu 

 district). 



MOLLUSCA — Lamellibrancliiata. 



Family AECiniE. 



Aeca MA^'ENSIS, sp. nov. (PI. LIV, figs. 5 & 6.) 



Description. — Shell small, arciform, inflated; umbo proso- 

 gyrous, situated in the anterior third of the length ; cardinal margin 

 straight, making an obtuse angle with the posterior margin, which 

 passes under a rounded right angle into the slightly-curved ventral 

 margin, and this passes gradually into the anterior margin. 



The ornamentation consists of numerous fine radial ribs, coarser 

 in the posterior region (which is separated by a rounded indistinct 

 k:eelfrom the anterior portion) ; these are crossed by numerous fine 

 concentric ribs, producing granules on the ventral portion, but 

 imperceptible in the dorsal region. 



Dimensions in millimetres. — Left valve, length =16'5; 

 height =9*5; thickness =4-5. 



Eemarks. — Area textiliosa, Deshayes, from the "Bartonian of 

 Pari.s,^ has somewhat similar ornamentation, and the shell appears 

 to be shorter in. proportion to the height, and less inflated, than 



1 ' Description des Animaux sans Vertebres decouverts dans le Bassin de 

 Paris ' vol. i (1860) p. 881 & pi. Ixvi, figs. 12-14. 



