810 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



This is Lucina radians Conrad, 1841, and Lucina radiata of Conrad 

 in his Medial Tertiary, 1845, but not Lucina ra(1iaiii< Deshayes (in 

 MeHeville) 1843. which is a FelanieUa. 



PHACOIDES (CALLUCINA) BERMUDENSIS Dall, 1901. 



Bermuda, Hartt. 



This appears to be Lucina lenticiila Reeve, August, 1850, not of 

 Gould, June, 1850. I have therefore substituted a new name for the 

 preoccupied term. The specimens which agree very well with Reeve's 

 figure^ were found incrusted in the limy sand of the beach and no liv- 

 ing ones have come to my notice. It is not the species catalogued by 

 me in 1889 as Z. Irut!cjiia.~ 



PHACOIDES (PARVILUCINA) CRENELLA Dall, 1901. 



Cape Henry, Virginia, south to Cu))a, in 'J, to 124 fathoms. 

 This is Lucina crciiulata Dall,~ but not of Searles Wood, 1840-1853, 

 or Conrad (1834), 1840. 



PHACOIDES (?) LENTICULUS Gould, 1850. 



Rio Janeiro (^) United States exploring expedition, under Wilkes. 



This is Lucina lenticula Gould, 1850 (not of Reeve). A dubious 

 species of which the t3^pe is lost, the locality uncertain, and which is 

 erroneously called Oi/clas on Goidd's plate. 



PHACOIDES (BELLUCINA) AMIANTUS Dall, 1901. 



Cape Lookout, North Carolina, south to the West Indies and to San 

 Sebastian, Brazil, in 2 to 640 fathoms, living. 



This is the Lucina costata^^ of Dall, 1889, but not of d'Orbigny, 1846, 

 or of Tuomej^ and Holmes, 1856. A very elegant little species, the 

 analogue of Lucinii cancellaris Philippi, of the Pacitic coast. Living 

 specimens have ])een found on the reefs among the Florida Keys by 

 Hemphill and also dredged in 640 fathoms, Yucatan Strait, l)y the U. S. 

 Coast Survey Steamer Blahe, a very remarkable liathymetilcal range. 



WEST AMERICAN SPECIES. 

 PHACOIDES (HERE) RICHTHOFENI Gabb, 1866. 



Catalina Island to Gulf of California, in 16 to 6(') fathoms. 



The analogue of the Atlantic P. adansonii d'Orbigny, but with a 

 more capacious lunule. This feature, however, differs considerably 

 at difierent ages of the same individual, and the young show but little 



1 Conch, Icon., XI, fig. 67. 



^See Bull. U. S. Nat. Mus., No. 37, 1889, p. 50. 



f 



