122 



BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



CRISTELLARIA MARGINULINOIDES Goes. 



Plate 19, fig. 3. 



Cristellaria aculeata D'Orbigny, var. maryinulinoidcs Goes, Bull. Mus. 

 Comp. Zool., vol. 29, 1896, p. 56, pi. 5, figs. 15, 16. 



Description. — Test elongate, much compressed, the early portion 

 close coiled, the later chambers uncoiled and becoming more inflated, 

 periphery slightly keeled in the early portion, with or without 

 spines ; sutures marked b}'^ a series of fine beadlike processes, slightly 

 elongate across the sutures; sutures in the later portion depressed, 

 somewhat limbate, not beaded, general surface between the sutures 

 of the early portion somewhat spinose, later smooth, opertural face 

 rounded, not truncate; aj)erture becoming terminal, slightly pro- 

 jecting, small, radiate. 



Length of Albatross specimens slightly exceeding 1 mm.; as given 

 by Goes, up to 2.50 mm. 



Distribution. — I have had specimens from two Albatross stations, 

 one in the northern part of the Gulf of Mexico, the other oft' the 

 coast of Georgia. These differ somewhat from Goes's originals in 

 having very little trace of the spines on the margin, but they have 

 the characteristic sutural ornamentation and the rounded later por- 

 tion of the test, in these characters differing from Cristellaria 

 subaculeata, var. glabrata. Goes's specimens were from the Carib- 

 bean in 200 fathoms (366 meters). 



Cristellaria marginulinoides — material examined. 



CRISTELLARIA LIMBATA Flint. 



Plate 32, figs. 2, 3. 



Cristellaria limhata Flint, Rep. U. S. Nat. Mus., 1897 (1899), p. 318, pi. 

 67, fig. 1. 



Description. — Test elongate, early chambers close-coiled, later ones 

 forming a linear series, dorsal side subacute, ventral side broadly 

 rounded; chambers comparatively few, distinct; sutures limbate, 

 with a thick band of raised clear shell material, periphery of the early 

 portion with a few short rounded acicular spines, upper portion 

 smooth; aperture projecting, at the dorsal side of the last-formed 

 chamber. 



Length up to 2 mm. 



