438 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 48. 



Capiluna Gray, Guide Moll. Brit. Mus., p. 166, 1857. C. cuvieri, sole example. 

 Lucapina Gray, Guide Moll. Brit. Mus., p. 166, 1857. L. cancellata and L. crenulata 



cited. 

 Lucapina Tryon, Struct, and Syst. Conch., vol. 2, p. 326, 1883, L. crenulata cited as 



example. — Fischer, Man. de Conchyl., p. 858, 1885, same type; as subgenus of Fis- 



surellidea Orbigny, 1839. 

 Chlamydoglyphis Pilsbry, Man., pp. 198, 200, 1890. Type, Lucapina adspersa Philippi, 



1845 =cancellata Sowerby, 1835. 



The name Lucapina (Gray, MS.) was first put in print by Sowerby, 

 in his monograph of Fissurella in the Conchological Illustrations. In 

 this work he had the cooperation of Doctor Gray and so states, so 

 that the authenticity of the reference is certain. The citation of the 

 manuscript name of Gray is preceded in the same paragraph by 

 another, Foraminella of Guilding, founded on the same type. As the 

 first reviser, Philippi, accepted Lucapina and not Foraminella, the 

 former will take precedence. In the " Synopsis of the Contents of 

 the British Museum," 1840, Gray gives as a diagnosis of this genus 

 li in Lucapina the mantle covers the cancellated shell." It is evident 

 that when Gray proposed the genus he conceived of it as a Fissurella 

 in which the mantle covered all or a part of the outside of the shell 

 and the anal foramen was rounded or oval. When Carpenter sepa- 

 rated the genus GlypJiis he included in it those species previously 

 placed by Gray and the brothers Adams in Lucapina, which had the 

 rounded foramen, but in which the mantle did not exceed the margin 

 of the aperture as required by Gray's diagnosis. It is obvious that, 

 according to the rules, no species can be selected as type which was 

 not mentioned in the original publication. This restricts our search 

 for a type to Fissurella elegans Gray, or its equivalent, F. cancellata 

 Sowerby. The latter name being the only species mentioned, be- 

 comes the monotype. This view was accepted by Philippi, 1844, 

 Herrmannsen, 1846, and many others. It now remains to discover 

 what is the proper specific name to be retained for this species. 

 There was an earlier Fissurella cancellata Gray, of 1825, so the specific 

 name of Sowerby can not be retained. The specific name of sowerbii 

 Guilding precedes in the text that proposed by Gray and must be 

 adopted. It now remains to identify the species, which from Sow- 

 erby's excellent figure is not difficult. It is the West Indian shell 

 commonly known as adspersa Philippi, 1845, aegis Reeve, 1850, and 

 probably lentiginosa Reeve, 1850. Specimens in the Smithsonian col- 

 lection, received from the 1839 collections of Dr. L. Pfeiffer in Cuba, 

 through Thomas Bland, were labeled "fasciata Pfr." and the writer 

 used that name in several papers; but a search for the place of pub- 

 lication proving fruitless, it seems probable that the name was inedited. 

 Pilsbry noted the resemblance of Sowerby's figure to adspersa, but was 

 apparently misled by the fact that Reeve in the Iconica, 1849, figured 

 under the name of cancellata, another species which he afterward 



