THE MONTHLY BULLETIN OF THE DIVISION OF ZOOLOGY 

 FOR AUGUST AND SEPTEMBER, 1906. 



Volume IV, Nos. 4 and 5. 



Established in April. 1903, at the Office of the Economic Zoologist. 

 Edited by H. A. Surface, Economic Zoologist, Harrisburg, Pa. 



CONTENTS OF THE AUGUST AND SEPTEMBER ISSUE. 



Page. 



Preface 115 



Acknowledgments, 117 



Class Reptllia. The Reptiles 118 



Order I. Ophidia, T^he Ophidians or Serpents 118 



Ophidian Myths 118 



Queer facts , 123 



Molting- or Shedding, and Color, 125 



How Snakes Feed 125 



How Snakes "Run" or Move 12S 



"Do Snakes Lay Eggs," 126 



Remedies for Snake Bites 127 



Key to the Pennsylvania Families of Ophidians 129 



Family Colubridae. The Colubrine or Constricting Serpents 129 



Key to the Species of Colubrine Snakes in Pennsylvania, 129 



(a) Systematic Structural Key, 129 



(b) Simiple Structural Key, 130 



(c) Color Key 131 



Explanation of Food Charts , 134 



Discussion by Species, 134 



1. Carphophiops amcenue (Say). Ground Snake 134 



2. Virginia valerife B. & G. Valeria's Snake, 135 



3. Haldea striatula (L,.). Brown Snake 135 



4. Storeria occipitomaculata (Storer). Red-bellied Snake 136 



5. Storeria dekayi (Holb). DeKay's Snake or Rock Snake 138 



6. Clonophis kirtlandi CKenn.). Little Red Snake 140 



7. Thamnophis sauritus CL.). Ribbon Snake 141 



8. Thamnophis sirtalis (L."). Common Garter Snake 143 



8a. Thamnophis sirtalis 'parietalis (L.). Striped Garter Snake 144 



8b. Thamnophis sirtalis ordinatus (L). Spotted Garter Snake 144 



8c. Tha,mnophis sirtalis dorsalis. Spotted-and-Striped Snake, 144 



9. Regina rigida (Say). Rigid Queen Snake. . .• 150 



10. Regina loboris (L.). Queen Snake or Striped Water Snake 150 



11. Natrix sipedon (L.). Water Snake 152 



12. Callopeltis obsoletus (L.). Pilot Snake 157 



13. Callopeltis vulpinos (B. & G.). Fox Snake 161 



14. Opheodrys testivus (L.). Green Snake 162 



15. Liopeltis vernalis (DeKay). Grass Snake 164 



16. Bascanlon constrictor (L.). Black Snake, 166 



17. Pituophis melanoleucus (Daudin). Pine or Bull Snake, 171 



18. Diadophis punctatus (L.). Ring-necked Snake 171 



19. Lampropeltis getulus sayi (Holb.). King Snake 174 



20. Lampropeltis doliatus trianulus (Boie). House or Milk Snake 174 



21. Heterdon platirhinos (Latr.). Spreading Adder or Blowing Viper,.. 180 

 Family Crotalidfe: The Rattlesnakes and Copperheads 185 



22. Key to Species of Family Crotalidre 186 



22. Agkistrodon contortrix (L.). Copperhead Snake 186 



23. Sistrurus catenatus (Rafin.). Rattlesnake, Prairie 19'0 



24. Crotalus horridus (L.). Rattlesnake, Common 191 



Table of Stomach Contents of Pennsylvania Snakes 198 



Definition of Terms Used 202 



List of Specimens Received During June, 1906 203 



(114) 



