434 MR. E. A. SMITH ON SHELLS FROM ADEN. [JunC 16, 



261. Malleus (Malvxj fundus) regula, ForskSl. 



Hah. Red Sea ; Aden (Caramagna) ; Philippine Islands and 

 South Australia. 



262. Crenatula picta (Gmelin). 



JIab. Red Sea. 



Two small specimens from Aden, as regards colour, seem to 

 connect this species and C. mytiloides, Lamk. It is not at all 

 improbable that C. viridis, Lamk., is merely another colour-variety. 



263. Meleagrina margaritifera (Linn.). 



Hab. Red Sea, Persian Gulf, Indian Ocean, Philippines, N.W. 

 A-Ustialia. Aden {Oaramagna). 



204. Meleagrina fucata, Gould. 



Hab. Ceylon, Japan ; Gulf of Suez {Cooke). 



265. Vulsella vulsella (Linn.). 



Hab. Red Sea ; Aden (Garamagnd). 



For remarks and synonymy, see A. H. Cooke (Ann. Mag. Nat. 

 Hist. 1886, vol. xvii. p. 62). 



266. Pecten senatorius, Gmelin. 

 Hab. Moluccas, Philippines, Red Sea, &c. 



267. Pecten lividus, Lamarck, 



S.ab. Red Sea, Mauritius; Aden {Garamagnd). 



268. Pecten luculentus, Reeve, var. 



Hab. North Australia. 



Tvro specimens from Aden agree exactly vpith the type as regards 

 form, but differ in colour. Besides the golden yellow tint and the 

 dark spotting between the ribs mentioned by Reeve, the valves in 

 the shell figured are ornamented with a sort of irregular subreticu- 

 lation of white lines. The specimens from Aden are white or washed 

 with pale rose and conspicuously spotted with black in the furrows 

 between the principal nine or ten ribs, the dots forming an equal 

 number of uninterrupted colour-rays. These examples also exhibit 

 the irregular opaque white lines. The ribs are finely prickled and 

 the surface is ornamented throughout with a microscopic sculpture. 



269. Pecten plica, Linn. 



Hab. China, Ceylon, Red Sea ; Aden ( Caramagna). 



Two valves of a species o^ Spondylus {270), an Anomia (271), 

 a Plicatula (272), and an Oyster (273) were also collected by Major 

 Yerbury, but these I refrain from attempting to name, as they belong 

 to genera requiring special study. 



