MUSEUM OF COMPARATIVE ZOOLOGY. 205 
Thecidium Barretti Woopwagrp. 
Thecidium Barretti, Woodward, Dall, Bull. M. C. Z., IX. p. 104. Davidson, Geol. 
Mag,., I. pl. ii. figs. 1-3, 1864; P. Z. S., 1866, p. 104. 
Plate VI. Fig. 2. 
Habitat. Barbados, 100 fms. ; Station 232, St. Vincent, 88 fms. ; Station 
115, Montserrat, 88 fms. 
This rare species was identified by Mr. Davidson after comparison with his 
type. It is here satisfactorily figured, so far as the interior is concerned, for 
the first time, acccording to that eminent authority. 
Order LYOPOMATA Owen. 
Famity CRANIID Gray. 
Genus CRANIA Rerzivs. 
Crania Pourtalesii Dat. 
Crania Pourtalesii Dall, Bull. M. C. Z., IX. p. 104; Ibid., III. p. 35, pl. i. fig. 7, 1871. 
Habitat. St. Vincent, W. I., 88 fms., Station 232; Sand Key, Fla., 105 
fms.; off the Sambos, 116 fms. (single valves). 
This species is probably abundant in suitable places, but no satisfactory haul 
of them has yet been made. 
