NO. 1205. SYNOPSIS OF THE NAIADES SIMPSON. 935 



203, pi. i.xvi, fig. 6.* FISCHER, Jl. de Conch., XXXVIII, 1890, p. 8." P.E- 

 TEL, Conch. Sam., Ill, 1890, p. 187. 



Brazil; northward to Nicaragua. 



MYCETOPODA HUPEANA Clessin. 



* Mycetopus pyymmis HOPE, Moll. Nouv., Ill, 1857, p. 93, pi. xix, fig. 2. 



* Mycetopus hupeanus CLESSIN, Conch. Cab. Ano., 1875, p. 206, pi. LXVI, fig. 15. 



* FISCHER. Jl. de Conch., XXXVIII, 1890, p. 8. 



Brazil. 



(Group of Mycetopoda ventricosa.) 



Shell rather short and high, inequilateral subrhomboid with a strong 

 angle at the anterior upper point, cut away below in front, slightly 

 sinuous on the base, narrower behind, strongly truncate on posterior 

 slope; posterior ridge wide and lightly curved, hinge line curved. 



Animal unknown. 



t MYCETOPODA VENTRICOSA d'Orbigny. 



* Mycetopoda rentricosa i>'ORBiGNY,Voy. Am. Mer., 1843, p. 602, pi. LXXII, figs. 1-3. 



*H. and A. ADAMS, Gen. Eec. Moll., II, 1857, p. 505. *SOWERBY, Conch. 

 Icon., XVI, 1868, pi. HI, fig. 8. *CLESSIX, Conch. Cab. Ano., 1875, p. 202, pi. 

 LXIX, figs. 2, 3.* FISCHER, Jl. de Conch., XXXVIII, 1890, p. 8. *PJETEL, 

 Conch. Sam., Ill, 1890, p. 187. 



* Platiris (Mycetopus) ventricosus LEA, Syu., 1852, p. 56; 1870, p. 90. 



Bolivia. 



(Group of Mycetopoda soleniformis.) 



Shell large, rounded in front, but somewhat truncated on the lower 

 anterior part; base line evenly incurved; posterior ridge well devel- 

 oped, curved, truncate on posterior slope; beaks central. 



Animal that of the genus. 



t MYCETOPODA SOLENIFORMIS d'Orbigny. 



* Mycetopoda soleniformis D'ORBIGXY, Gner. Mag., 1835, p. 41. *CHEXU, 111. 



Conch., 1858, pi. i, figs. 1, la, 16. 



* Platiris (Mycetopus) soleniformis LEA, Syn., 1838, p. 34; 1852, p. 56; 1870, p. 90. 



* Mycetopus soleniformis REEVE, Conch. Syst.. I, 1841, p. 125, pi. xciv. * HAXLEY, 



Test. Moll., 1842, p. 224; * Biv. Shells, 1843, p. 224. * D'ORBIGNY, Voy. Am. 

 Mer., 1843, p. 601, pi. LXVI.' * CAT LOW and REEVE, Conch. Norn., 1845, p. 

 69. *H. and A.ADAMS, Gen. Rec. Moll., II, 1857, p. 505; III pi. cxvm, 

 figs. 2a, 26. * CHEXU, Man., 1859, II, p. 147, fig. 725. * REEVE, Elements of 

 Conch., 11,1860, pi. xxxii, fig. 181a, 6. *SOWERBY, Conch. Icon., XVI^ 

 1868, pi. i, fig. 1.* CLESSIX, Conch. Cab. Ano., 1875, p. 201, pi. LXVIII, fig. 1. 



* FISCHER, Jl. de Conch., XXXVIII, 1890, p. 7. *P.ETEL, Conch. Sam., Ill, 

 1890, p. 187. 



* Mycetopus solenoides SOWERBY, Conch. Man., 1839, fig. 151. 



* Margaron (Anodonta) soleniformis LEA, Syn., 1852, p. 53. 



* Platiris (Mycetopus) soleniformis LEA, Syn., 1870, p. 90. 



Bolivia; Peru. 



'1843 was the date of issue of the last part of the voyage. The description of 

 Mycetopus in this work appeared earlier. 



