MUSEUM OF COMPAEATIVE ZOOLOGY. 205 



Thecidium Barretti Woodwakd. 



Thecidium Barretti, Woodward, Dall, Bull. M. C. Z., IX. p. 104. Dayidson, Geol. 

 Mag., I. pi. ii figs. 1-3, 1864; P. Z. S., 1866, p. 104. 



Plate TI. Fix. 2> 



Habitat- Barbados, 100 £ms. ; Station 232, St. Vincent, 88 Tms. ; Station 

 115, Montserrat, 88 fhis. 



This rare species was identified by Mr. Davidson after •comparison with his 

 type. It is here satisfactorily figured, so far as the interior is concemedj for 

 the first time, acccording to that eminent authority. 



Order LYOPOMATA Owen. 

 Family CRANIID^ Gray. 



Gbnus crania Ketzius. 



Crania Pourtalesii Dall. 



Crania Pourtalesii DaU, Bull. M. C. Z., IX. p. 104 ; Ibid., III. p. 35, pL i. fig. 7, 1871. 



Habitat. St. Vincent, W. I., 88 fnis., 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. 



