492 Zoological Society : — 



on the exposed disk, all radiating from one point. The concentric 

 lines of structure are crowded, but very evident. 



Results obtained in the Examination of Waters. 



1. Brine spring near Usdum with fish. Temp. 90° F. Spec, 

 grav. 1-035. 



2. North end of the Sea near Jordan. Temp. 83° F. Spec. grav. 



3. Dead Sea, Usdum, South end. Temp. 83° F. Spec. grav. 

 1-204. 



4. El Lisan (Peninsula), North end. Spec. grav. 1-200. 



No. 1 smelt strongly of sulphuretted hydrogen, and contained a 

 good deal of suspended matters. No. 2 pretty clear ; less sulphu- 

 retted hydrogen. Nos. 3 and 4 clear, and no sulphuretted hydro- 

 gen. (A. W. HOFMANN.) 



Calculated evaporation from the area of the Dead Sea at temp. 

 84° F. (58-6 dew-point) 1,500,000,000 gallons, or 6,500,000 tons. 

 Assumed area 320 square miles (H. Poole). 



January 13, 1857.— Dr. Gray, F.R.S., in the Chair. 



On the Structure of the Pelvis of Chlamyphorus 

 TRUNCATUs. By Dr. J. E. Gray, F.K.S., V.P. Ent. Soc, 



ETC. 



Sir Woodbine Parish having, after considerable trouble, at length 

 been able to procure a second specimen of this extraordinary and 

 most interesting animal, has kindly transmitted it to the British 

 Museum. 



The specimen had been eviscerated and simply dried in the sun, 

 was destitute of any fur, and did not afford any means of distinguish- 

 ing its sex. 



The Museum already possessed the well-preserved specimen for- 

 merly procured by Sir Woodbine Parish, and the imperfect skeleton 

 of it so well described and figured by my late excellent friend Mr. 

 Yarrell in the Zoological Journal, vol. iii. p. 544. t. 16. 



In the specimen of the skeleton figured and described by Mr. 

 Yarrell, the bones of the pelvis were separated to preserve the outer 

 covering entire; the "bones being cut through as near to and as 

 parallel with the inner surface of the plates as their confined situation 

 would admit," p. 546. 



This description did not in the least prepare me for the extraor- 

 dinary structure which was discovered when the flesh was removed. 



The truncated posterior disk or shield is firmly attached to the 

 pelvis by four (or two pairs of) posterior processes, and in the central 

 line by the elongated ridges of the posterior sacral vertebra, so as to 

 be immoveably fixed to the pelvis. The posterior disk is thick, rather 

 solid, and furnished with a marginal series of oblong perforations, 

 having a second series of similar but smaller perforations within them 



