64 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 59. 



chamber is added without completely filling in the space between it 

 and the previously formed coil. 



SPIROLOCULINA cf. ORNATA d'Orbigny. 



Spiroloculina ornata d'Orbigny, Foram. Cuba, 1839, p. 167, pi. 12, figs. 7, 7 1 . 



A single specimen from station 2 at Montego Bay is very much like 

 the figure given by d'Orbigny under this name. The originals are 

 from sands of Cuba; rare. 



Genus VERTEBRALINA d'Orbigny, 1826. 



VERTEBRALINA CASSIS d'Orbigny. 



Plate 15, figs. 1-8. 



Vertebralina cassis d'Orbigny, Foram. Cuba, 1839, p. 51, pi. 7, figs. 14-15. 

 Vertebralina mucronata d'Orbigny, Foram. Cuba, 1839, p. 52, pi. 7, figs. 16-19. 



Brady placed this species as a s} r nonym of Arliculina sagra d'Or- 

 bigny. However, by the law of priority, the name cassis should 

 take precedence, even though the two were considered the same. 

 The development of the two genera has already been studied, and 

 Vertebralina seems related to Spiroloculina as a derivative, while 

 Articulina seems to have been derived from the Milioline series, either 

 Quinquclociilina or Triloculina. As different genera the two need 

 not be confused and in fact it does not seem that the two should 

 ever have been placed together. 



Vertebralina cassis is common in the Jamaican material at Montego 

 Bay at stations 2, 4, and 6, and at Runaway Bay. The material 

 is very typical at all the stations. 



It seems evident that V. mucronata is a synonym of V. cassis as 

 indicated by Brady. 



D'Orbigny had material from several West Indian islands, and 

 I have found it in the Gulf of Mexico and on the coast of Florida. 



VERTEBRALINA. species? 



In the Montego Bay material, from stations 4, 5, and 6, there are 

 rare specimens, evidently young, of a smooth species of this genus, 

 but not in sufficient quantity to warrant description. 



Genus QUINQUELOCULINA d'Orbigny, 1826. 



QUINQLELOCULINA ALVEOLINIFORMIS (H. B. Brady). 



Miliolina alveoliniformis H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879; 



Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 181, pi. 8, figs. 15-20. 

 Quinqueloculina alveoliniformis Cushman, Bull. 71, U. S. Nat. Mus., pt. 6, 1917, 



p. 43. 



This is a large species peculiar to tropical regions in fairly shallow 

 water. Specimens occurred in the Runaway Bay material and in the 

 dredgings from 9 fathoms (16 meters) in Montego Bay. It is singular 

 that this species is not recorded in some form in the Cuban Monograph. 



