53 



nitida, Jivida vel sanguinea albido tessellata vel zonata prasertim 

 prope suturam et ad peripheriam, spiraliter crebre et tenuiter 

 puncto-striata : spira acuto-conica, anfr. 5, ultimo angulato : aper- 

 tura ovata ; labro acuto, pallido ; fauce rubra, albo-zonata ; col- 

 umella planulala, sanguinea. Long, f , lat. f poll. Hab. Puget 

 Sound. 



A small, biconical species like L. lineata, characterized by its 

 finely puncto-striate sculpture, its range of articulate spots, and 

 by the blood-red color of the columella. 



Littorina scutulata. Testa parva, ovato-conica, plerumque 

 erosa, castanea vel livida albido inordinatim maculata, striis obso- 

 letis cincta : spira anfr. 5, ultimo ventricoso : apertura late ovata ; 

 labro acuto, pallido ; columella planata, antrorsum expansa ; 

 fauce livido. Long, f, lat. §- poll. Hab. Puget Sound. 



Allied to L. tenebrosa, but has a more elongate and acute spire ; 

 also to L. lepida, but is more inelegant, and without the coloring 

 of the base and aperture of that shell. 



Littorina caliginosa. Testa parva, ovata, tenuis, lasvis vel 

 lineis incrementalibus striata, epidermide fusco-virente luteo mac- 

 ulato induta : spira, apice erosa, anfr. 4-5, ventricosis ; sutura 

 profunda : apertura vix \ longitud. tests adequans, rotundato- 

 ovata ; labro continuo, acuto, pallido, vix everso ; fauce livido. 

 Long. \, lat. \ poll. Hab. Terra del Fuego. 



Has the general characters of small specimens of L. tenebrosa, 

 and its structure and color give it somewhat the aspect of a fresh 

 water shell. 



Littorina acuminata. Testa parva, solida, nitida, elongata, 

 conico-turrita, livida obscure flammulata interdum maculis albidis 

 articulatis cincta : spira acuta, anfr. 6, planulatis, ultimo suban- 

 gulato ; sutura profunda : apertura ovata ; columella nitida, mori- 

 tincta. Long. T 3 ^, lat. £ poll. Hab. Mangsi Island. 



A small, much elongated species in the style of L. lineata, 

 known by its regular grooving, and its mulberry-tinted columella. 



Littorina plena. Testa parva, solida, ovata, cinereo-oliva- 

 cea, interdum albido reticulata, striis spiralibus insculpta : spira 

 parva, acuta, anfr. 5, ultimo globoso, subangulato ; sutura pro- 

 funda : apertura parva, dilatata et angulata ; columella planulata, 

 rufa, albido marginala ; fauce castanea, albo-zonato. Long.-], 

 lat. \ poll. Hab. San Francisco. 



