1870. ] DR. J. MURIE ON MANATUS AMERICANUS. 747 
Fig. 6. Chorizoopes frontalis, 2, p. 738. 
a. Profile of cephalothorax. 
6. Underside of cephalothorax. 
c. Fore right view of eyes and falces. 
d. Extremity of tarsus. 
e. Natural length of Spider. 
7. Gta spinosa, 3, p. 739. 
a. Profile of cephalothorax. 
6. Underside of cephalothorax. 
c. Fore right view of eyes and falces. 
d, e. Palpus in two positions. 
J. Natural length of Spider. 
8. Rhion pallidum, 8, p. 741. 
a. Profile of cephalothorax. 
6, Fore right view of eyes and falces. 
ce. Underside of cephalothorax. 
d. Extremity of tarsus. 
é. Natural length of Spider. 
f, g. Palpus in two positions. 
9. Phycus brevis, 2, p. 743. 
a. Profile of cephalothorax. 
6, Fore right view of eyes and falces. 
e. Underside of cephalothorax. 
d. Extremity of tarsus of first and second pairs of legs. 
e. Natural length of Spider. 
10. Aphantochilus rogersii, 2, p. 744. 
Profile of cephalothorax. 
. Underside of cephalothorax. 
Fore part of cephalothorax (upperside viewed from behin«). 
. Portion of leg. 
Natural length of Spider. 
SAS Ha 
November 15, 1870. 
Professor Flower, F.R.S., V.P., in the Chair. 
Mr. Sclater exhibited a specimen of the new Australian Mud-fish, 
recently described in the Society’s ‘ Proceedings’ (1870, p. 222) by 
Mr. Gerard Krefft, C.M.Z.S., under the name of Ceratodus forstert. 
For this valuable specimen Mr. Sclater was indebted to the kindness 
of Mr. E. P. Ramsay, of Dobroyde, N.S. W. The fish had been 
procured by Mr. Ramsay’s agent in Queensland from a branch of 
the Mary River, on Eootaley Station, having been captured by hook 
and line by some blacks in the employ of Mr. D. Helsham. In 
letters to Mr. Sclater, Mr. Ramsay stated that he had made arrange- 
ments to have a large water-hole in the same neighbourhood dragged, 
and was therefore expecting a further supply of specimens, which he 
hoped to be able to forward, along with some remarks upon the 
habits of this fish, at an early opportunity. 

Dr. J. Murie read a memoir on the form and structure of the 
