FROM THE LAGOON AT FUNAFPUTT. 181 
of the Pacific Islands. Out of thirteen ‘Challenger’ Stations, 
eleven were from the Pacific. It has been found also in the 
West Indies, off Madagascar, in the Malay Archipelago, the 
Mediterranean, and the Red Sea. 
More than half the specimens from the lagoon at Funafuti 
appear to have been at one time attached by a face of the 
shell to various living organisms, but chiefly to joints of 
Halimeda. Some examples were actually found in position on 
these calcareous plants. This habit of Orbitolites attaching 
itself to foreign objects is not unknown, but it appears to have 
only been noticed hitherto in the species Orbitolites complanata. 
The specimens thus found upon other organisms are invariably 
irregularly discoidal, and are generally concavo-convex in shape. 
They also have patches of redundant shell-growth scattered over 
the surfaces, sometimes arranged in radial strigille around the 
peripheral area. 
Lagoon, Funafuti. Sample 1 (10 fathoms), some of the 
specimens beautifully smooth and regular, others concave or 
inflexed and with redundant patches of shell-growth on the 
surfaces (attached varieties); sample 2 (154 fathoms), very 
irregular and inflexed, specimens large ; sample 3 (20 fathoms), 
irregular specimens; sample 4 (23 fathoms), irregular speci- 
mens; sample 5 (24 fathoms), irregular specimens; sample 7 
(24 fathoms), very irregular specimens ; sample 8 (26 fathoms), 
a regular specimen; sample 14 (16 fathoms), irregular speci- 
mens; sample 15 (19 fathoms), an irregular specimen ; sample 17 
(12 fathoms), both regular and irregular specimens; sample 18 
(74 fathoms), regular and irregular specimens. 
ORBITOLITHS CoMPLANATA, Lamarck. 
Orbitolites complanata, Lamarck, 1801, Syst. Anim. sans Vert. p. 576. 
O. complanata, Lam., Egger, 1893, Abhandl. bayer. Akad. Wiss., 
math.-phys. Cl. ii. vol. xviii. p. 249, pl. iii. fig. 40. 
Although rarer than the foregoing species, O. complanata is 
common and fairly typical in two of the lagoon samples. The 
variety plicata of Dana* is found in some abundance in the 
sand from the lagoon beach at Funafuti, but it does not occur 
* Marginopora vertebralis, Blainville, var. plicata, J. D. Dana, 1848, Wilkes’ 
U.S. Expl. Exped., Rep. Zooph. p. 706, pl. 60. figs. 9, 9.@, 4. 
