240 Christmas Island. 



JP. miniaceum found at Funafuti and elsewhere in coral rocks, in 

 which the foraminifer alternates with other encrusting organisms. 

 In this variety the chamberlets are elongated in the direction of 

 growth or adherence, and the form shows little or no tendency 

 to make the prolongations so characteristic of the type species. 

 Some of the specimens of Polytrema here observed are more normal 

 in appearance, having the conical branching habit of growth. 



Amphistegina lessomi, d'Orbigny. 

 This species is common in Ko. 220. 



Seterostegina depressa, d'Orbigny. 



This form is rare, and not strongly developed in limestone 

 ]^o. 220. 



Orhitoides neodispansa, sp. nov. (PI. XX, Fig. 4.) 



This species is very common in the specimen No. 220, constituting 

 about one-third of the entire bulk of the rock. The specimens 

 bear exactly the same characters as those of No. 924, and are in 

 a similar condition of preservation. 



No. 219. "Eastern edge of basalt mass, first inland cliff. Smith 

 Point." Close to 220. 



A limestone with veins of basalt and palagonite. This rock 

 contains Lithothamnion, foraminifera, corals, and polyzoa. 



Foraminifera : 



Miliolina alveoUmformis, Brady. Eare. 



Carpenteria, sp. Fragments. 

 Amphistegina lessonii, d'Orb. Eare. 

 Heterostegina depressa, d'Orb. Common. 



Orhitoides {LepidocycUna) ephippioides^ sp. nov. Eare. 



No. 595. A fine-grained limestone with included fragments of 

 palagonitic material and many foraminifera. This rests upon the 

 bed of palagonite tuff seen in the face of the Southern Cliff (Batoe 

 merah^). 



Foraminifera : 



OrhuUna universa, d'Orb. Frequent. 

 Glohigerina hulloides, d'Orb. Common. 

 Globigerina duhia, Egger. One specimen. 

 JDiscorlina, sp. Eare. 



1 See p. 277. 



