102 ACCOUNTS, ETC., OF THE BRITISH MUSEUM. 



of whicli projected a large rodent molar. By blasting away- 

 some 20 tons of the overlying limestone he was able to follow 

 the vein, and found that it occurred along a fissure. In 

 pockets in the red rock occurs a bone breccia, containing the 

 bones and teeth of Amhlyrhiza. The bones are fragile and 

 the rock hard, so that it was impossible to separate the 

 bones in the field : the whole of the bone-bed was, therefore, 

 quarried out and brought to London. 



In the intervals of this work, and while searching for 

 suitable localities. Dr. Gregory determined the general suc- 

 cession of the Anguilla rocks, and made a collection of fossils, 

 including over 150 echinids, 160 corals, and over 600 molluscs^ 

 The fauna is of considerable interest, and was previously 

 unrepresented in the Museum. 



From Anguilla Dr. Gregory returned on the sloop to 

 St. Kitts. That island is volcanic, but contains a small bed 

 of limestone 'which has been determined as Miocene. He 

 obtained from it one well-preserved echinid {E chinanthus 

 Tosaceus), which shows that it is really Pleistocene. He 

 reached Antigua a day later, which concluded his fortnight's 

 special leave. 



A list of the collections made by Dr. Gregory is appended,, 

 including those made on Antigua and Dominica during his 

 ordinary vacation. The collection from Antigua will enable 

 the speeimens in the Nugent Collection (made between 1810 

 and 1830) to be assigned to their respective horizons. 



List. 



1. From Anguilla : — 



Fossil corals - - - - 163 specimens. 



,, echinids - - - - 150 „ 



,, molluscs - - _ 626 „ 



Bones and teeth of Amhlyrhiza 10 boxes. 



Recent corals - - - - 30 specimens. 



„ echinids and molluscs 



(land and marine) - - 4,000 „ 

 Also specimens of lizards, snakes, fee. 



2. From Barbuda : — 



Fossil corals - - - - 50 specimens. 

 Recent molluscs, sponges, and 



echinids _ _ _ _ 1,400 



Bones of Oryzoinys, &c., from the caves. 



3. From Dominica : — 



Fossil corals - - - - 22 specimens. 

 A collection of volcanic rocks. 

 Algse from boiling lakes and hot springs, and 

 other botanical specimens. 



