428 DISCOVERY REPORTS 



occasionally in in-shore deposits, all over the world. It is unfortunate that Brady, having 

 first described this form as a distinct species, should subsequently have confused it with 

 a quite distinct d'Orbignyan type. Yet a third form has been brought into the question, 

 which we have figured and described in our South Cornwall paper. This third form, as 

 suggested by us, is probably the same as Terquem's Rotalina excavata. We are now 

 convinced that it diff'ers from d'Orbigny's species, and from Brady's (see H.-A. & E. 

 1916, FSC, p. 51, pi. ix, figs. 2-5). 



376. Globorotalia (Pulvinulina) crassa (d'Orbigny). 



Rotalina crassa, d'Orbigny, 1840, CBP, p. 32, pi. iii, figs. 7, 8. 

 Pulvinulina crassa, Cushman, 1910, etc., FNP, 1915, p. 58, pi. xxvii, fig. i. 

 Globorotalia crassa, Cushman, LFR, IV, 1927, p. 75. 



Nine stations: 48, 388; WS 90, 92, 245, 409, 431, 432, 433. 



Rare; occasional specimens only, the best at 48. These stations are within, but very 

 close to, the southern limit of the species, which Brady gives as 53° 50' 00" S. The Type 



377. Globorotalia (Pulvinulina) truncatulinoides (d'Orbigny). 



Rotalina truncatulinoides, d'Orbigny, 1839, FIC, p. 132, pi. ii, figs. 25-7. 

 Rotalina micheliniana, d'Orbigny, 1840, CBP, p. 31, pi. iii, figs. 1-3. 

 Pulvinulina micheliniana, Brady, 1884, FC, p. 694, pi. civ, figs. i-2. 

 Pulvinulina truncatulinoides, Rhumbler, 1900, NPF, p. 17, figs. 16-18. 

 Globorotalia truncatulinoides, Cushman, 1927, FWCA, p. 176. 



Twenty-two stations: 48, 228, 230, 235, 236, 388; WS 83, 86, 87, 88, 89, 90, 91, 92, 93, 99, 225, 

 245, 248, 408, 432, 433. 



Very unevenly distributed so far as frequency is concerned. At many of the stations 

 it is represented by one or two specimens only, at others, notably 236 and WS 91, 245, 

 248, it is more or less plentiful, very frequent at WS 433. As a rule the specimens are 

 small, and often very thin-walled, but at 228, 235, 236, WS 88, 432, the normal thick- 

 walled type occurs. The Type could not be found in Paris. 



378. Globorotalia (Pulvinulina) menardii (d'Orbigny). 



Rotalia menardii, d'Orbigny, 1826, TMC, p. 273, No. 26, Modele no. 10. 

 Pulvinulina menardii, Brady, 1884, FC, p. 690, pi. ciii, figs. 1,2. 

 Globorotalia menardii, Cushman, 1927, FWCA, p. 175. 



One station: WS 89. 



Three specimens only were found at this station, which is in shallow water close to the 

 entrance to the Magellan Straits — 53° 01' 00" S, 68° 07' 00" W is its exact position. This 

 is just south of the extreme southern boundary recorded by Brady for this species, 

 51° 36' 00" S in the South Atlantic. The specimens are much smaller than the average 

 of bottom specimens, and one of them is apparently pelagic. The Type could not be 

 found in Paris. 



