32 BULLETIN 161, UNITED STATES NATIONAL MUSEUM 



Test in front view elongate, oval, much compressed, in end view 

 narrowly elliptical, with a very slight keel about the border, central 

 portion transparent and clear, the border with generally longitudinal 

 costae, very fine and numerous, and slightly curved toward the sides; 

 apertural end slightly extended into a somewhat thickened neck. 

 Length, 0.3 mm; breadth, 0.15 mm. 



This species is evidently closely related to Lagena radiato-marginata 

 Parker and Jones, but seems to be specifically distinct. The types 

 were from the Challenger station at Nares Harbor, Admiralty Islands, 

 in 37 fathoms, and Brady did not have it from any other station. 

 It has been recorded from Mauritius and from off West Australia 

 by Egger, but his figures are not very definite. Millett found it to 

 be widely diffused in the Malay Archipelago. Chapman has recorded 

 it from off Funafuti in 2,400 fathoms, but his specimen may have 

 been carried out into deeper water. Sidebottom's records are from 

 the Southwest Pacific and off the east coast of Australia in 465 

 fathoms. Heron-Allen and Earland have recorded it from the 

 Kerimba Archipelago off southeast Africa. This makes a rather 

 definite Indo-Pacific range for the species. Our specimens are all 

 from Port Lotten, Kersail, Caroline Islands. 



LAGENA SEMISTRIATA Williamson 



Plate 8, Figurks la, b 



The only specimens we have in the present collections referable 

 to this species are from Port Lotten, Kersail, Caroline Islands. They 

 represent a small form which has peculiarly raised costae at the base 

 of the chamber, somewhat projecting into spines. Such forms are 

 close to those which we have previously referred to as Lagena perlucida. 



LAGENA STRIATA (d'Orbigny) 



Plate 8, Figures 11, 13 



The two specimens figured on Plate 8 are referred to d'Orbigny's 

 species. One of these is somewhat typical, but the other has a 

 peculiar development about the apertural end brought about by the 

 excessive development of certain of the costae. They are from 

 Albatross Stations H3855, northwest point of Apataki, 1 mile SE., 

 in 654 fathoms, and H3996, north point of Arhno Atoll, 50° S., 7 

 miles E., in 1,325 fathoms. 



LAGENA STRIATA (d'Orbigny) var. STRUMOSA Reuss 



Plate 8, Figures 2, 3 



Lagena strumosa Reuss, Zeitschr. geol. Ges., 1858, p. 434; Sitz. Akad. Wiss. 

 Wien, vol. 46, pt. 1, p. 328, pi. 4, fig. 49, 1862 (1863). 



Lagena striata (d'Orbigny) var. strumosa Cushman, U. S. Nat. Mus. Bull. 71, 

 pt. 3, p. 20, pi. 7, figs. 7-10, 1913; U. S. Nat. Mus. Bull. 103, p. 58, pi. 21, 

 fig. 7, 1918; U. S. Nat. Mus. Bull. 100, vol. 4, p. 178, 1921. 



