141 8 ANODONTITES 



Anodonto lutcola Lea, Pr. Ac. N. Sci. Phila., II, 1858, p. 118; 



Jl. Ac. N. Sci. Phila., IV, i860, p. 267, pi. xuii, fig. 147; 



Obs., VII, i860, p. 85, pi. XLiii, fig. 147. — Clessin, Conch. 



Cah. Ano., 1874, p. 122, pi. xxxvii, figs, i, 2. 

 Margaron (Anodonta) luteola hV-A, Syn., 1870, p. 83. 

 Anodon luteolus Sowerby, Conch. Icon., XVII, 1870, pi. 



xxxiii, fig. 132. 

 Glabaris luteolus Simpson, Syn., 1900, p. 920. 

 Anodon schomhurgianiis Sowerp.y, Conch. Icon., XVII, 1870, 



pi. xxxiv, fig. 137. 

 Glabaris schomburgianiis Simpson, Syn., 1900, p. 920. 

 Anodonta schomburgkiana Clesstn, Conch. Cab. x\no., 1876, 



p. 235, pi. LXXVII, fig. 4. 



The type of Anodonta tbrtilis is a young shell somewhat 

 eroded and greenish-tinted at the umbonal region. That of 

 A. luteola is a nearly adult shell without any of the green color 

 at the umboes and unworn. The examination of additional 

 material since w^riting the Synopsis has convinced me that the 

 two are identical. The species is shorter in proportion to its 

 height than crispatus or philippianus. I believe now that A. 

 schomburgianiis is only a yellowish variety of the above. The 

 ridge which Sowerby figures and mentions on the posterior 

 slope is sometimes present in A. tort His. 



Anodontites strebeiji (Lea.) 



Shell irregularly obovate, subcompressed, thin, inequilateral ; 

 beaks moderately developed ; posterior ridge rounded ; dorsal 

 line lightly arched ; anterior end narrowed, rounded ; base 

 curved, fuller behind the middle ; dorsal slope obliquely trun- 

 cate ; surface with delicate growth lines ; epidermis with fine, 

 loop-like wrinkles arranged in radial rows, shining, yellowish- 

 green with very numerous, faint, green rays ; nacre deep blue, 

 slightly lurid, with feeble, radial sculpture : muscle scars shal- 

 low. 



Length 40, height 23, diam. 13 mm. 



Mexico. 



