236 Dr. J. E. Gray on the Varieties of Dogs. 



2. Rupellaria carditoides (Venerupis), Deless. Rec. de Coq. 



pi. 5. f. 3. 



Pidlastra carditoides, Catlow. 

 Hob. Tsus-Sima (in oyster-shells), Oki Islands. 



3. Rupellaria macro])hylla, Desh. (Venerupis), Cat. Conchif. 



Brit. Mus. p. 193. 

 Hah. Kuro-Sima. 



4. RupeUaria monstrosa, Chemn. (Ventis) } Conch, pi. 42. f.445, 



446. 

 Hah. Tsus-Sima (in slate-stone), Kino-O-Sima (in Madre- 

 pores). 



Genus Clementia, Gray. 



1. dementia? similis. Sow. Thes. Conch, pi. 151. f. 154. 

 Hob. Tatiyama. 



2. Clementia moretonensis, Desh. Proc. Zool. Soc. 1853, p. 18. 

 Hah. Kino-O-Sima. 



Genus Trapezium, Megerle. 



1. Trapezium angulatum. Lam. ( Gypr icardia), Lam. 2; Wood, 



Ind. Test. Suppl. pi. 2. f. 2. 



Hah. Kino-O-Sima, in Madrepores. 



2. Trapezium rostratum, Lam. (Cypricardia) y Lam. 3. 



Chama rostrata, Wood. 

 Hah. Tsus-Sima, in oyster-shells. 



Genus Coralliophaga, Blainv. 



GoraUiophaga lithophagella,ljam. (CW/«7«), Lam. 24; Deless. 

 pi. 11. f. 11. 



Hah. Kino-O-Sima, in Madrepores. 



XXXII. — Note on the Varieties of Dogs. 

 By Dr. J. E. Gray. 



The variations of domestic dogs is a subject that has not 

 been sufficiently studied, and one that is well worthy of atten- 

 tion. 



Colonel Charles Hamilton Smith devoted the fifth volume 

 of Jardine's ' Naturalist's Library,' to the natural history 

 of dogs. He divides domestic dogs thus : — 1, feral dogs ; 



