NO. 1425. THOMAS MARTYN—DALL. 427 



enabled to preserve Cerithium Bruguiere 1789, not Lamarck 1799. 

 The type is C. asper Linnaeus {-\-rugata Martyn). 



Cyprsea Martyn is identical with Cyprsea Linn^us phis Ovula Bru- 

 guiere. Patella Martyn is identical with the Linnean genus as far as 

 his species indicate. 



Mitra Martyn is identical with Mitra Rumphius, usually cited as of 

 Humphrey or Lamarck. As Martini was the first to use the name 

 binomially, he should be credited with the genus. His first species is 

 3L temellata Martyn, a name which has been generally accepted. 



Martyn's next name is Llmax^ but it is not Llmajr of Linna?us (1758). 

 The former is veiy heterogeneous and seems to have been intended to 

 contain all land snails not operculate and a variety of holostomate 

 marine forms, as well as species of Terehra and CantJair/dus. 



In the Museum Calonnianum the name Lituus was adopted from 

 Martyn in a generic sense and Lituus Irevis Martyn cited as a species. 

 But I believe that the whole name was Lhnax lituus var. hrevis and 

 that, owing to peculiarities of engraving explained elsewhere in this 

 paper, the author referred to was misled. The name Lituus as a genus 

 is expunged from a copy of the Museum Calonnianum in my posses- 

 sion, in a hand supposed to be that of Hiimphre}^ or one of his clerks, 

 and another name substituted. Mr. Davies Sherborn came to the 

 same conclusion, in the Index Animalium, and placed Ljltuus Martyn 

 among the specific names. 



Helix Martyn begins with {Amphibola) crenata Martyn, whose 

 specific name should be retained. The group otherwise comprises 

 species of Turho of the subgenus Marmorostoma^ and does not contain 

 a single species of the forms ordinarily known as Helix. 



Trochus Mart^'n is equivalent to Trochus Linnteus, but Valuta Mar- 

 tyn, which follows, contains only species of Conus and one coniform 

 Voluta in the Linnean sense, while several typical Linnean volutes 

 are referred to L^uccinuvt hy Martj^n. 



Cachlea Martyn, contrary to the usage of his nonbinomial fore- 

 runners, is a receptacle for bivalves, like Venus and Cardimn. The 

 only species in volume I is C. radiata Martyn, a species of Mereirix, 

 which I do not find in the monographs. This being the first binomial 

 use of the name, Geofl'roy not coming under that category, it may 

 have to supplant Meretrix. In volume II it is used for two species of 

 Cardium but in the later volumes Cardlum is substituted for it, 

 including various Veneridse^ Cardimn (Linnseus), and Echinochama. 



IlaUotis Martyn agrees with the genus as restricted by Lamarck 

 from the Linnean mob. 



Purpura Martyn is the first binomial use of the name, used b}^ the 

 ancients colloquially to indicate the muricoid shells from which the 

 Tyrian purple was derived. In harmony with this tradition it is 

 applied by Martyn to a shell which Linnaeus would have called Murex, 



