2fi4 DOLIUM. 



It is D. fasciatum, var., of Kiener (fig. 19); D. lactescens, 

 Martyn ; D.latesulcatum,'M.a.rt\n\} D.ampullaceum, Phil. (tig. 20). 



Var. MACULATUM, Lam. PI. 4, fig. 21. 



The costee, nine to eleven in number, maculated somewhat 

 regularly with chestnut. This has been regarded as a distinct 

 species, but a series before me connects the two ; intermediates 

 also connect this variety with 



Yar. FIMBRIATUM, Sowerby. PI. 4, fig. 22 ; PI. 3, fig. 18. 



The ribs usually vary in number from twelve to fourteen, 

 tessellated with chestnut. The name is derived from the fim- 

 briated margin of the outer lip, but this is common to all the 

 varieties w r hen fully grown. 



Senegal, Manilla, Japan. 



If these two varieties had not been recognized very generally 

 as distinct species, I would not have separated them as even 

 varietal forms, as their features want constancy. D. cassis 

 (Bolten), Morch; Buccinum dolium, Linn.; D. minjac, Adan- 

 son, and D. tessellatum, Encyc. Meth., are names given to the 

 two varieties, but not readily assignable to either separately. 

 The Senegal locality is given on the authority of Adanson. D. 

 Lischkeanum, Kiister (fig. 18 , is a full S3 7 nonyn of var. fimbri- 

 atum, as are probably the unfigured D. JReevei, Hanley, and 

 possibly D. Favannei (likewise unfigured) of the same author, 

 and D. marginatum, Philippi (unfigured). 



D. PERDIX, Linn. PI. 3, fig. 15 ; PI. 4, figs. 23-25. 



Shell thin, inflated, with about twenty low ribs, and rather 

 narrow shallow intervening grooves ; fulvous brown or light 

 reddish bay, more or less plentifully marked with whitish lunate 

 spots or maculations. Length, 5-9 inches. 



Indian Ocean, Mauritius, Polynesia, 



\] r e,sf Africa, West Indies, Brazil. 



There can be no doubt of the immense distribution of this 

 species. Dr. Jacob Green, many years ago described a shell as 

 D. plumatum which has been supposed to be the West Indian 

 D. perdix, and Prof. Morch has called it D. pennatum; it has no 

 distinctive features. Other synonyms are Perdix reticulatus, 

 Montfort; Dolium mfurn, Bl.iinv. Fischer has described find 



