﻿4bO SOLENAIA 



ing behind in a point at the base of the shell ; there is a faint 

 anterior ridge, \\hich runs in the direction of the anterior base; 

 posterior end c)l)li(|uel\ Iruncated; surface unevenly sulcate, 

 the anterior end very stronj^ly, concentrically ridged back to 

 the anterior ridge and forming a sort of area ; epidermis green- 

 ish-yellow, shining; hinge with only the faintest vestiges of 

 teeth ; nacre bluish-white with a slight pallial sinus marked on 

 it posteriorly ; anterior scars irregular ; posterior scars large. 



Length 177, height 45, diarfi. 25 mm. 



China. 

 Mycetopus oleivonis Heude, Conch. Fluv, Xank., Ill, 1877, 



pi. XXII, fig. 46; xxiii, fig. 48. 

 Solenaia oleivora Simpson, Syn., 1900, p. 656. 

 Mycetopus recognitus Heude, Conch. B'luv. Xank., Ill, 1877, 



pi. XXII, fig. 47. 

 Mycetopus cccruleus Heude, Conch, b'luv. Xank., IX, 1885, pi. 



i,xxi, fig. 135. 

 Mycetopus armatus Heude, Conch. Fluv. Xank., IX, 1885, pi. 



Lxx, fig. 133. 

 Mycetopus arcuatus Fischer, Jl. de Conch., XXXVIII, 1890, 



p. II. 

 Mycetopus inridis Heude, Conch. Fluv. Xank., IX, 1885, pi. 



Lxxi, fig. 136. 

 Mycetopus succineus Heude, Conch. Fluv. Xank., IX. 1885, 



pi. Exx, fig. 134. 



The posterior ridge is a little sliari)cr than in joloiifonuis, 

 the nacre is lighter colored, and the beaks are placed a little 

 farther away from the anterior end. 



SoLEN.M.v iKiiJiNEA (lleude). 



Shell much elongated, arcuate, narrower in front, scarcely 

 subsolid, subcompressed, gaping below and behind ; anterior 

 end rounded ; scarcely marked ofif from the rest of the shell ; 

 beaks low. placed well forward ; posterior ridge high and 

 angled, curved upward in the middle, ending Ijchind in a point 

 at the base of the shell ; ])osterior end truncated ; surface some- 

 what irregularly concentrically sculptured , epidermis thick, 



