232 REPORT OF THE 



194. Larus Delawarensis, Ord. — Ring-billed Gull. 



195. Chroicocephalus atricilla, Linn.— Laughing Gull. 



19g, « Philadelphia, Lawrence. — Bonaparte's Gull. 



Sub-Family Sterninae. 

 191. Sterna Wilsoni, Bonap. — Wilson's Tern. 

 H91'. " frenata, Gambel — Least 

 '198. Hydrochelidon plumbea, Lawrence— Black Tern. 



FAMILY COLYJIBIDAE. 



Sub-Family Colymbinae. 



199. Colymbus torquatus, Brunn. — Loon. 



Sub-Family Podicipinae. 



200. Podiceps griseigena, Gray. — Red-necked Grebe. 



201. " cristatus, Lath. — Crested " 



202. " cornutus, Lath. — Horned " 



203. Podilymbus podiceps, Lawrence. — Pied-bill " 



CLASS REPTILIA. 



ORDER TESTUDINATA. 



SUB-ORDER AMYDAE. 



FAMILY TKIONYCHIDAE. 



*1. Amyda mutica, Filz. 



*2. Aspidonectes spinifer, Ag. — Soft-shelled Turtle. 



FAMILY CBELYDROIDAE. 



3. Chelydra serpentina, Schw. — Snapping Turtle. 



FAMILY CIXOSTERNOIDAE. 



*4. Ozotheca odorata, Ag. 



5. Thyrosternum Pennsylvanicum, Ag. — Musk Turtle. 



FAMILY EMYDOIDAE. 



6. Graptemys geographica, Ag. 



>198. H. pli mbea. I shot severa spec mens of this beautiful tern last June, on the shore of 

 Saginaw Bay. From the number of individuals in that vicinity I supposed it to bt 

 breeding there. 



