FORAMINIFERA OF THE ATLANTIC OCEAN. 



8i) 



clsc'whoiv from oil' Now Zoaland. olT the Fiji Islands (Brady), oil' 

 western Australia (Egger), in the North Pacific ofi' the Hawaiian 

 Islands (Bagg, Cushnian), and off Japan (C'ushnian). 



Both microspherie and megalos)dieric forms occur, the micro- 

 spheric being much larger in size and having the labyrinthic chambers 

 more complex and the arerture dendritic, while m the megalosphoric 

 form it is smaller and simpler throughout. 



HAPLOSTICHE DUBIA (d'Orbigny), var. INTERMEDIA Vawff-n Breeck, 



Plate 7, fig. 4. 



LitHola soldanii d'Orbigny, var. intermedia Vanden Bkoeck, Ann. Soc. BeJg. 

 Micr., vol. 2, 1876, p. 74, pi. 2, figs. 1, 3, 4, 6.— Cushman, Publ. 291, Carnegio 

 Inst. Washington, 1919, p. 30. pi. 6, figs. 1-4. 



Description. — Test larger than in the typical, more tapering, the 

 chambers more distinctly m.arked by depressed sutures. 



Vanden Broeck's specimens were from 100 fathoms (183 meters) 

 off the Barbados. I have the variety from 100 fathoms (188 

 metei-s) also off the Barbados and two apparently similar sj ecimens 

 from Albatross D2378 in the Gulf of Mexico with the typical form. 

 This is the fossil form of the species recorded from tlie Bowden beds 

 of Jamaica. 



Ilaplostiche dubia — material examined. 



Bot- 

 tom 

 tem- 

 pera- 

 ture. 



Character of 

 bottom. 



CO 



gym. 



gym. 



AI)iiii(iaiiC( 



Rare. 

 _Few. 

 " Common. 

 •ComraoiK 



Common 



Subfamily 3. Trochammininae. 



Description. — Test composed of several chambers, either in ji 

 ])lanospiral coil, trochoid, or otherwise arranged, wall composed of 

 sand grains of varying degrees of coarseness cemented with a cal- 

 careous or ferruginous cement, free or attached. 



This subfamily as here used contains the many-chjiinbered arena- 

 ceous forms not arranged in a linear series throughout. Excei)t tin; 

 large, somewhat anomalous forms, Neusina agassizii and Botelliwi 

 lnb)/rinthica for which a separate subfamily has been made. Some 

 of the species, such as Ammohaculites tenuinunyo, appear to be 

 largely made up of a linear series, but have* u close-coiled ea,rly 

 portion not seen in the Reophacinae. 



