12 THE NAUTILUS. 



and much resembling, the beak of a parrot. This mandible was 

 partially enveloped in a tough white muscle and was connected with 

 the digestive organs by a muscular gullet. On each side of the head 

 was a large eye about two inches in a diameter. The crystalline 

 lens, when dried, were clear and bright and closely resembled large 

 solitaries (I have seen the lenses used for settings). The gladius, or 

 internal shell was about eighteen inches long, composed of shining 

 white cartilage, and shaped like a large quill-pen, with the pen point 

 towards the tail. I found about fifteen of these mollusks, but have 

 been unable to identify them and would be pleased if some one 

 could give me the probable name. 



GENERAL NOTES. 



NOTE ON CAEYCHIUM EXILE (C. B. ADAMS). This Jamaican 

 species was originally described in Adams' Contributions to Cou- 

 chology, III, p. 38 (Oct., 1849) as Pupa e.rilis ; and Pfeiffer retains 

 the species in Pupa in the Monographia Heliceorum III, p. 556. It 

 is omitted from the Monographia Auriculaceorum. Bland in Journal 

 de Conchyliologie, 1872, p. 46, first refers the species to Carychium. 

 In this genus the name is preoccupied by H. C. Lea for a species of 

 the United States described in 1841. The Jamaica form will, there- 

 fore, stand C, exile Lea, var. jamtii<'e>isisPi\$l)ry (see Nautilus VIII, 

 p. 63, figs. 15, 16), although some would probably consider it dis- 

 tinct from the United States species. P. exilis Ad., C. exile Bland, 

 becoming a synonym of the variety described by myself. H. A. P. 



NEW PUBLICATIONS RECEIVED. 



I. THE UNIONIDJE OF THE OHIO RIVER. II. THE STREPOMA- 

 TIDJE OF THE FALLS OF THE OHIO. By R. Ellsworth Call, from 

 Proceedings Indiana Academy of Science, No. IV, 1894. Published 

 Nov., 1895. Brief comparative reviews. The writer states that 

 " the literature of the subjects reveals some sixty species " of Union- 

 idre found in the Ohio River. " The Strepomatid molluscan fauna of 

 the Falls of the Ohio is one that is very rich in numbers, but rather 

 poor in species," the total number being but ten species. 



ON THE OCCURRENCE OF ALECTRYONIA UNGULATA IN S. E. 

 AFRICA WITH A NOTICE OF PREVIOUS RESEARCHES ON THE CRETA- 

 CEOUS CONCHOLOGY OF SOUTH AFRICA.- By R. Bullen Newton 

 (from the Journal of Conchology, VIII, 136-151, Jan., 1896). 



BULLETIN OF THE U. S. GEOLOGICAL SURVEY, No. 133; CON- 

 TRIBUTIONS TO THE CRETACEOUS PALEONTOLOGY OF THE PACIFIC 

 COAST ; FAUNA OF THE KNOXVILLE BEDS. By T. W. Stanton. 

 This Bulletin, which contains 132 pages and 22 plates, is a very valu- 

 able addition to our knowledge of the Cretaceous Mollusca. Pre- 

 ceding the descriptions of species, is a thorough discussion of the 

 geological features of the region. There are enumerated 77 species 

 of invertebrates, 50 of which are described as new ; all but 7 ot the 

 species are mollusks. 



