ON THE EXAMINATION OF TWO CAVES NEAIt TENBY. 209 



EXPLANATION OF THE PLATES. 



Plate V. 



FlQ. 1. Nauplius (BrepTuilus) of Penaeus. (After Fritz Miiller.) 

 „ 2. Metanauplius of Penaeus. (After Fritz Miiller.) 

 „ 3. Protozoaea of same. (After Fritz Miiller.) 

 „ 4. Nauplius (Brephalus) of Euphausia. (After Metschnikoff.) 

 „ 5. Zoaea (Brephalus) of Macrura (Crangon rulgarit). 

 „ 6. Zoaea (Brephalus) of Anomura (Galathea). 



Plate VI. 



Fiu. 1. Zoaea (Brephalus) of Anomura (Dromiafalax). 

 „ 2. Zoaea (B)-epluilus) of Anomura (Porcellana longicornii). 

 „ 3. Zoaea (Brcphalus) of Brachyura {Trapezia). 

 „ 4. Zoaea (Brephalus) of Brachyura (Gelassimus). 

 „ 5. Megalopa (Brephalus) of Macrura (Astacus JluviatiKs). 



Plate VII. 



Fig. 1. Ovum of Palaemon recently excluded. 

 „ 2. Ovum showing incipient stage of embryonic existence. 

 „ 3. Ovum showing the presence of the three pairs of lobes that represent,'*, 



the eyes and, b, first and c, second, antennae : as well as the labium and 



caudal extremity. 

 „ 4. Same still further advanced, with four pairs of lobes, d, e, f, g, added that 



represent the future oral appendages. 

 „ 5. The same still further advanced, showing those which represent the 



future Gnathopoda, h and i. 

 „ 6. Section showing the forming of the embryonic heart, ht, alimentary 



canal, al, and ventral nervous cord, ng. 

 „ 7. Embryo approaching completion. 

 ,, 8. Embryo previous to quitting the ovum. 



Report of a Committee consisting of Professor Eolleston, Major- 

 Greneral Lane Fox, Professor Busk, Professor Boyd Dawkins, Dr. 

 John Evans, and Mr. F. Gr. Hilton Pbice, appointed for the pur- 

 pose of examining Tivo Caves containing human remains, in the 

 neighbourhood of Tenby. 



Operations were commenced in the way of the exploration of the " Little 

 Hoyle " Cave, Longbury Bank, parish of Penally, near Tenby, on Monday, 

 July 22, 1878, and were continued during that week and upon the 

 ensuing Monday. 



It will be well to begin our report by a summary of the results which 

 we have attained, and in the second place to give in detail the facts upon 

 which our general conclusions have been based. 



The two caves which we here examined are contained in a peninsula of 

 mountain-limestone known as " Longbury Bank," bounded on either side 

 by a valley which unites with its fellow at the bluffly-ending N.E. ex- 

 tremity of the " bank." If we compare the levels hereinafter given with 

 the facts spoken to by the raised beaches along this coast, and by other 

 observations we cannot doubt that Longbury Bank was once, and that 

 in no very remote geological period, washed on either side by the sea, 

 and presented much the same general appearance as some of the still so- 

 1878. p 



