THE NAUTILUS. 123 



probably represents a small local variety, the locality " Timor " may 

 well be questioned. The white form is var. nivea Pilsbry (NAUTILUS 

 XXIII, 132). 



OLIVA RETICULARIS Lamarck. 



This is almost as variable in color as its Pacific analogue O. spi- 

 cata, but the tendency to become more or less angulate as in that 

 species is not apparent. The typical reticularis is the smaller form 

 reticulated witli pink or purplish lines, common throughout the West 

 Indies. Large cylindrical forms from the Bahamas are figured by 

 Marrat as nivosa. These resemble very closely specimens of cir- 

 cinata from the Gulf coast of Florida. The 0. pallida Marr., prob- 

 ably represents an immaculate form of nivosa, and quersolina Duel, 

 as figured by Marrat, the albinistic form of the typical reticularis. 

 Specimens of nivosa banded and streaked with an outer layer of 

 brown are the/ormosa Marr., _j_ hepatica Marr. (non Lam.) -f bifas- 

 ciata Kuster. 



OLIVA CIKCINATA Marrat. 



Oliva litterata Lam., Ann. du Mus., XVI, p. 315, 1810. Non 

 Bolten, 1798. 



Oliva circinata Marr., Sowerby's Thes. Conch. IV, Oliva, p. 21, 

 pi. 17, fig. 277, 1880. 



The study of a very large series before me shows conclusively 

 that Marrat's circinata is really a form of Lamarck's litterata, 

 and will have to replace Lamarck's name, which is preoccupied. 

 After describing the species Marrat says: " The Brazilian represen- 

 tative of the West Indian 0. litterata. It is more rounded and sym- 

 metrical and less oblique and the lip is not so spread at the posterior 

 end." The reference to both Brazil and West Indies is very doubt- 

 ful. The locality is more likely the Gulf coast of Florida as speci- 

 mens from there agree with Marrat's figure. It is readily separated 

 from nivosa by its different color, darker bands and fasciculations 

 below the suture. Specimens from the east coast of Florida are 

 usually longer and more cylindrical. A bright yellowish form is 

 frequently found on the Gulf coast which might bear the name of ' 

 citrina. 



OLIVA FULGURATOR (Bolten). 



Porphyriafulgnrator Bolt., Mus. Boltenianum, p. 36, 1798. 



