BARBADOS-ANTIGUA EXPEDITION 213 
At Barbados it has not been an uncommon thing for Mrs. 
Stoner and myself to be followed about on our collecting trips 
by from one to as many as eight or ten little black, more or 
less clothed, urchins. However, we found that the native An- 
tiguans were neither so inquisitive nor so insistent on offering 
their services in collecting specimens. This was a great relief 
to us and much less trying on one’s temper and vocabulary. 
With such a variety of habitats and faunas represented, col- 
lecting was indeed a pleasure and much still remained to be 
done at the expiration of our alloted time of four weeks upon 
this interesting tropical island. 
NOTES ON THE GEOLOGY OF ANTIGUA 
By A. O. Thomas 
Antigua is located about 200 miles to the north of Barbados. 
It forms an intimate link in the Lesser Antillean chain. Phy- 
sically it is a part of the same bank as is Barbuda, an island 
about two-thirds its size and separated from it by approximate- 
ly twenty-five miles of shallow water nowhere much exceeding 
200 feet in depth. The islands of Guadeloupe to the south 
and Montserrat to the southwest are not much farther away 
than is Barbuda, but the water between them and Antigua is 
from 2,000 to 2,500 feet deep. To state it in another way, an 
uplift of a little over 200 feet would not only connect Antigua 
and Barbuda but the uplifted bank would form a new island 
whose area would be probably twice that of the present island 
of Gaudeloupe. Many lines of evidence indicate that the two 
islands have been united in relatively recent times. A study of 
the land snails of the two islands, for example, brings out some 
striking similarity while the notable similarities of the reptiles 
led one scientist to remark that ‘‘ Barbuda is a herpetogical ap- 
pendix of Antigua.’’ These facts emphasize the recency of the 
diastrophic movements which have been such important factors 
in modifying the geology and in affecting the distribution of life 
in the whole Antillean region. 
A eruise along the windward side of the island gives the 
impression that it is very rough, and, in fact, such is the case, 
for the hills are numerous and steep-sided and there is but lit- 
