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18. CANCELLARIA CRENULATA, A. Adams. 
C. testa acuminato-ovata, imperforata, sordide alba, anfractibus sex 
planulatis, longitudinaliter plicatis, plicis validis subdistantibus, 
crenatis, postice angulatis productis, spinosis, transversim liris 
elevatis sculptis, columella triplicata. 
Hab. China Seas. (Mus. Cuming.) 
19. TypHis TRIANGULARIS, A. Adams. 
T. testa fusiformi, triangulari, alba, subcancellata, varicibus tribus 
pinnatis postice tubulatis, interstitiis transversim liratis in medio 
nodosis ; apertura ovali canali mediocri aperto dextrorso sub- 
reflexo. 
Hab. ? (Mus. Cuming.) 
This is a species quite distinct from any Typhis hitherto described, 
and resembles in form the Murex tripterus of Born. 
2. ON THE GEOGRAPHICAL DISTRIBUTION OF THE MAMMALIA 
AND Birps or THE HIMALAYA. 
By B. H. Honeson, Esa.* 
“The Himalayan mountains extend from the great bend of the 
Indus to the great bend of the Brahmapittra, or from Gilgit to 
Brahma Kind, between which their length is 1800 miles. Their 
mean breadth is about.90 miles; the maximum about 110, and the 
minimum 70 miles. The mean breadth of 90 miles may be most 
conveniently divided into three equal portions, each of which will 
therefore have 30 miles of extent. These transverse climatic divi- 
sions must be, of course, more or less arbitrary, and a microscopic 
vision would be disposed to increase them considerably beyond three, 
with reference to geological, to botanical, or to zoological phzenomena. 
But, upon comparing Captain Herbert’s distribution of geological 
phzenomena with my own of zoological, and Dr. Hooker’s of botanical, 
I am satisfied that three are enough. These regions I have deno- 
minated the lower, the middle, and the upper. They extend from 
the external margin of the Tarai to the ghat line of the snows. The 
lower region may be conveniently divided into—I. The sandstone 
range, with its contained Dhans or Maris; II. The Bhaver or 
Saul forest; III. The Tarai. The other two regions require no 
subdivisions. The following appear to be those demarcations by 
height which most fitly indicate the three regions :— 
Name. Elevational limits. 
Lower region ...... Level of the plains to 4000 feet above the sea. 
Central region...... 4000 to 10,000 feet above the sea. 
Upper region ..... 10,000 to 16,000+ feet above the sea: highest 
peak measured is 28,176. 
* Extracted from a memoir by the same author, entitled, ‘On the Physical 
Geography of the Himalaya,” and printed in the Journal As. Soc. Bengal for 1849, 
by Frederic Moore. 
+ This is about the average height of the ghats and of the perpetual snow. It 
