CIILOROSTOMA. 167 



1,2. — Chlorostoma xanthostigma A. Adams, P. Z. S., 1851, p. 183 

 (Teste E. A. Smith, Ajdi. and Mag. N. H., xvi, 1875, p. 112, and 

 Watson, Challenger Moll., p. 70). 



My scientific conscience will not alloAV me to substitute for Dr. 

 Dunker's name for this species, that proposed by Adams. The 

 latter would never have been identified had it not been for the speci- 

 mens in the British Museum ; for Adams' description gives neither 

 measurement nor locality, and is not sufticient for identification. I 

 do not consider specimens placed in the British or any other 

 Museum as " published " in any sense, unless they are so described 

 or figured that they may be identified without referring to the types. 

 And further, I do not see how anything but evil can result from 

 the practice of quoting names from specimens in the British 

 Museum in synonymy. 



Of this species Lischke says: It stands extremely close to T. 

 brunneus. The sculpture is identical, save that my examples lack 

 the upper of the two spiral lira; mentioned. The umbilical pit is in 

 my adult examples of T. brunneus, much narrower than in the 

 present species, in one example entirely concealed. T. nigricolor 

 seems also to I)e larger and proportionately broader than T. brun- 

 neus. My largest example of brunneus is 34 mill, alt., 29 in diam.; 

 of nigricolor 41 mill, alt., 36 diam. But the main difference is 

 in the color; the upper surface and the larger part of the base is 

 pitchy-black in T. nigricolor, the eroded apex orange, the umbilical 

 callus white or a beautiful green, (Lischke.) 



The " T. brunneus " which is referred to above is not the true 

 Chlorostoma brunneum Phil., a species of the Californian coast, but 

 a distinct form as yet undescribed, of which a single small sj^ecimen 

 is before me. This shell is figured on pi. 26, fig. 16. It ma} be 

 called Chlorostoma Lisclikei. On account of the insufficiency of my 

 material at present, I defer a formal description. Vide Lischke, 

 Jap. Meeres-Conchylien, i, p. 99, " T. brunneus." 



C. PFEiFFERi Philippi. PI. 26, figs. 13, 14, 15. 



Shell urabilicate, conical, solid, dark purplish or brownish-purple, 

 obliquely striate, the base radiately striate with white ; spire strictly 

 conical, elevated, apex eroded, whorls about 7, planulate above, the 

 last acutely angular at the periphery, the l)ase plano-concave ; 

 whorls smooth or with fine spiral striie, and ill-defined longitudinal 

 folds; aperture subhorizontal. occu^jying al)out half the area of the 



