10 BULLETIN 71, UNITED STATES NATIONAL MUSEUM. 



also occurred at several Nero stations and one Tuscarora station 

 between Guam and Yokohama in 660 to 2,104 fathoms. There was 

 little variation observed in the specimens from these six stations. 



The specimens figured by Brady * may very probably belong to this 

 species. They have the broad-lipped aperture at one side of the 

 axis while Reuss's examples of L. apiculata have a definite stellate 

 aperture. 



LAGENA COLLARIS, new species. 

 Plate 1, fig. 2. 



Description. — Test elongate, ovoid in front view, widest near the 

 aboral end, apertural end with a deep constriction somewhat in from 

 the actual end; cross section circular, wall thin, transparent, smooth; 

 aperture nearly circular, opening into a separate cavity which con- 

 nects with the larger part of the test by a short entosolenian tube. 



Length 0.35 mm.; breadth 0.2 mm. 



Distribution. — Type-specimen, Cat. No. 8525, U.S.N.M., from Nero 

 station 1 147 in 1,856 fathoms, midway between Yokohama and Guam. 



The external constriction in the test seems to really mark the apex 

 of the test and the small portion above is a supra-added chamber- 

 like portion of the test with its own aperture to the exterior. From 

 the level of the constriction or slightly above there is a short entoso- 

 lenian tube passing downward into the main cavity of the test. 



LAGENA FELSINEA Fornasini. 



Plate 4, fig. 1. 



Lagena vulgaris, var. (Entosolenia) globosa Rymer-Jones, Trans. Linn. London, 



vol. 30, 1872, pi. 19, fig. 2 (not L. globosa (Montagu)). 

 Lagena apiculata H. B. Brady (part), Rep. Voy. Challenger, Zoology, vol. 9, 



1884, pi. 56, fig. 4. 

 Lagena emaciata, v&i.felsinea Fornasini, Mem. Accad. 1st. Bologna, ser. 5, vol. 

 9, 1901, p. 47, fig. 1. 

 Description. — Test elongate; subcylindrical, arcuate in side view 

 especially toward the apertural end, aboral end broader, rounded 

 or slightly acute; wall thin, smooth, aperture eccentric, rounded, 

 with a long entosolenian neck somewhat inflated at its inner end. 

 Length about 0.7 mm.; diameter about 0.25 mm. 

 Distribution. — Specimen figured from Nero station 1012 in 1,932 

 fathoms between Guam and Japan. The specimen figured by 

 Rymer-Jones was from the region of Java. Fornasini 's original 

 specimen is from the Mediterranean region. 



i Rep. Voy. Challenger, Zoology, vol. 9, 1884, pi. 56, figs. 17, 18. 



