NO. 2207. WEST AMERICAN MELANELLID MOLLVSKS—BARTSCn. 297 



Catalogue of Mazatlan Shells, published in 1857, to it. Here wo find 

 the following listed : 



Eulima ? hastata Sowerby, page 438. 



Eulima sp. ind. (a), page 438. 



Eulima sp. ind. (6), page 438. 



Leiostraca'i recta C. B. Adams, page 439. 



Leiostraca'i solitana C. B. Adams, page 439. 



Leiostraca sp. ind. (a), page 439. 



Leiosiraca sp. ind. (6), page 440. 



Leiostraca linearis Carpenter, page 440. 



Leiostraca ? iota, var. retexta Carpenter. 



Leiostraca ? distorta, var. yod Carpenter. 



All of the forms attributed to C. B. Adams were later found to be 

 distinct by Carpenter and given names by him. 



In 1860 O. A. L. Morch, in his Beitrage zur Molluskenfauna 

 Central-Amerika's, reached the genus Eulima on page 120 * and de- 

 scribed Eulima hipartita Morch, from Sonsonate, Mexico, and dis- 

 cussed Eulima distorta Sowerby and Eulima recta C. B. Adams. 



The next pubUcation dealing with West American Melanellidae is 

 P. P. Carpenter's Review of Prof. C. B. Adams's Catalogue of the 

 Shells of Panama, from the Type Specimens.* Here he discusses on 

 pages 356 and 357 the shells described by C. B. Adams and his own 

 efforts in the Mazatlan Catalogue. 



He here raises the name Leiostraca? iota retexta Carpenter, pre- 

 viously given to his Mazatlan shell ^ to specific rank. He also 

 separates the Mazatlan shells which he listed under the name 

 Leiostraca recta C. B. Adams * from the true M. recta C. B. Adams, a 

 Panamic species, and gives to the Mazatlanic species the name 

 Leiostraca myoZwto Carpenter, but it will be found that this has a tilted 

 nucleus which places it in the genus Odostomia. The shell which he 

 described as Leiostraca solitaria he now considers distinct from C. B. 

 Adams Eulima solitaria, and he gives it the name Leiostraca producta. 



The next paper to deal with these shells was also published by 

 P. P. Carpenter. It was his Supplementary Report on the Present 

 State of our Kjiowledge with Regard to the Mollusca of the West 

 Coast of America.^ Here, on page 659, we find the following species 

 listed as — 



Eulima micans ? new species. 



Eulima compacta ? new species. 



Eulima rutila ? new species. 



Eulima thersites new species. 



There are only a few words of description, which would not enable 

 even a specialist to determine the species these names were intended 

 for. They are, however, more fully described later. 



> Malak. Blat., vol. G, pp. 120-121. * Mazatlan Catalogue, 1857, p. 439. 



* Proc. Zool. Soc. London, 18C3. » Kept. Brit. Ass. Adv. Sci. 1803(1804). 



» Mazatlan Catalogue, 1857, pp. 440-441. 



