2 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 
A closer comparison of the foraminiferal fauna on both sides of the 
Isthmus would have been important for completing our knowledge as to 
the relation of the faunas of the two seas. But besides that the Foram- 
inifera offer but scanty leading features in this matter, on account of 
their more cosmopolite distribution than other classes, our material is 
at present too limited to allow us to make any general inferences on 
this matter. Besides, there is a blank in our knowledge about the fauna 
in the Pacific quarter in question living above five hundred fathoms, 
while from the Caribbean Sea there exists plenty of material from nine 
hundred to twenty fathoms of water. This may also be the reason why 
the bottom samples from the Pacific are quite devoid of shallow-water 
Textulariea, Clavuline, Cristellarie, Nodosarie, Planorbuline, Polysto- 
melle, Discorbine, Amphistigine, Milioline, Vertebraline, Orbiculine, ete. 
Regarding the deep-water fauna of both seas (one thousand to fourteen 
hundred fathoms), one may with some degree of certainty infer that it is 
nearly common for the two. The few exceptions that may be apparent 
from our list of bathymetrical distribution may be accounted for by 
deficiency in the material searched. 
Bottom Samples from Stations occupied in the Gulf of 
Mexico and the Caribbean Sea. 
Hyd. 43. Lat. 18° N.; Long. 65° W. ; about 8 miles N. to W. off St. Thomas 
(Virgin Islands). 
1146 fathoms. Cor. sand, Globigerine (3 cub. centim.). 
Globigerine ++ 0. 
Hyd. 45. Lat. 17° 55’ N.; Long. 65° W.; 12 miles N. W. off Santa Cruz. 
2501 fathoms. Cor. sand, Globiger. (8 c.c.). 
Globigerine + few other pelagic species. 
Hyd. 46. Lat. 17° 51’ N.; Long. 65° W. 
2423 fathoms. Cor. sand, Globiger. (4 ¢.c.). 
Globigerine + 0. 
Hyd. 47. Lat. 17° 46’ N.; Long. 65° W.; 10 miles W. off Santa Cruz. 
1482 fathoms. Cor. shells, Globiger. (10 c.c.). 
Globigerine +- 0. 
Hyd. 48. Lat. 17° 37’ 30” N.; Long. 65° 12’ 40” W.; about 15 miles 8. W. 
off Santa Cruz. 
978 fathoms. Cor. ooze (6 c.c.). 
Mostly pelagic species: Globigerine, Spheroidina dehiscens Park. & JONES, 
Candeina nitida D’ORB., Pullenia obliqueloculata PARK. & Jonzs, Pulvinulina 
Menardii, P. Micheliniana D’ORB. 
