INDEX. 



The names of counties, districts, and loccdities vnll he found under the heading 

 " County Distribution." 



The detailed references to the three species of British snal-es will he found under the 

 respective headings "Adder," "Ring Snake," and "Smooth Snake," 



q.=^ quoted or quotation. 



Abergavenny, 14. 

 Adder— 



age, 118. 



anatomy, 96. 



antidotes, 139-142, 225. 



attitudes, 137-139, 221. 



average length, 76. 



bite, 126-141. 



black, 248. 



climate, 112. 



colour variation, 94, 95, 109-125, 

 321, 301, 291. 



description, 76-80. 



development, L53-163. 



dissections, 101, 103, 105, 107, 

 149, 151. 



distribution, 75, 237. 



effect of venom, 126-136. 



eggs, 151-155. 



embryos, 155-160. 



enemies, 167. 



fangs, 97, 98. 



fat, 139. 



food, 84-92, 113. 



frequency, 240. 



gland, 98. 



gullet, 100, 101, 103. 



habits, 83. 



haunts, 82. 



head, 96. 



head plates, 96, 97. 



Adder — 



heart, 102, 105, 107. 

 heredity, 112. 

 hibernation, 60-67. 

 incidents, 221-232. 

 jaws, 97. 



jumping, 138, 221. 

 keel-backed, 24. 

 liver, 102, 105, 107. 

 local distribution, 237. 

 locality, 113. 

 male and female, 245. 

 markings, 77-81. 

 measurements, 76, 77, 367. 

 Monnow Valley, 84. 

 number of young, 145-153. 

 objections to theory, 167-173. 

 oesophagus, 100. 

 oviducts, 151. 

 pairing, 143. 

 pancreas, 102. 

 pathological, 123. 

 poison-glaiul, 98. 

 preserving specimens, 218. 

 remedies for bite, 139-142. 

 reproduction, 143-163. 

 respiration, 108. 

 sexes, 92-94, 117. 

 shape, 81. 

 side-markings, 80. 

 size, 76, 77. 



