March, 1920] 



The Canadian Field-Naturalist 



53 



174. Pipit, Ani'lms rubescens. Occurs both 

 spring and fall but very irregular; always in flocks. 



1 75. Catbird, Dumetella caroUnemis. Very 

 common summer resident. W. R. Campbell records 

 one as wintering season of 1918-19. 



176. Brown Thrasher, Toxosioma rufum. 

 Common. Eggs laid about May 10. 



1 77. Carolina Wren, Thryolhorus, ludovicia- 

 nus. A male came m sprmg of 1916; was in full 

 song until August. 



178. House Wren, Troglodytes aedon. Very 

 common; breeds nearly as often m old slumps in 

 clearmgs as about farm-buildings. 



179. Winter Wren, Nannus hiemalis. Have 

 only found it as a migrant m spring and fall ; is 

 fairly common. 



180. Short-billed Marsh Wren, Cisiothorus 

 stellaris. Have observed it but twice locally; took 

 a specimen Sept. 2, 1916; saw another June 5, 

 1917. 



181. Brown Creeper, Certhia famiUaris. 

 Usually resident. Absent winter of 1918-19. 

 There is usually one to be seen in a mixed flock 

 of chicadees, nuthatches and downy-woodpeckers. 



182. White-breasted Nuthatch, Silia car- 

 olinensis. Common resident. 



183. Red-breasted Nuthatch, Sitla cana- 

 densis. Quite common in spring and fall of some 

 years; during others nearly absent. 



184. Chickadee, Penlhesies atricapillus. Com- 

 mon resident; nesting early in May. 



185. Golden-crowned Kinglet, Regains sat- 

 rapa. Ordinarily fairly common all winter and 



spring, but the last two winters (1917-18, 1918-19) 

 entirely absent. Only one individual seen each 

 spring. 



186. Ruby-crowned Kinglet, Regulus calen- 

 dula. Regular migrant. 



187. Blue-gray Gnatcatcher, Polwpc'.la 

 caerulea. Rare; only two noted. 



188. Wood Thrush, Hylocichla musteUna. 

 Fairly common summer resident, breeding in most 

 of the woods. 



189. Veery, Hylocichla fuscescens. Not as 

 common as the woodthrush in the breeding season, 

 but common during migration. 



190. Gray-cheeked Thrush, Hylocichla ali- 



c'lae. Rare migrant. Took a specimen May 13, 

 1918; saw one May 14, 1919. 



191. Olive-backed Thrush, Hylocichla usiu- 

 lata. Common spring and autumn migrant. 



192. Hermit Thrush, Hylockhla guttata. 

 Appears in numbers both spring and fall. 



193. Robin, Planestlcus migratorius. Very 

 abundant, occasional birds staying through the win- 

 ter. The spring of 1915, two albinos hatched from 

 a nest at Lobo (five miles east). One was prac- 

 tically white, the other had a dark head. The 

 white one became quite tame, as food was put out 

 for it daily. It returned the next spring, but soon 

 disappeared, probably taken by a cat. 



194. Bluebird, Sialia sialis. Very commonly 

 distributed. Oct. 12. 1914, I tcok an albino from 

 a large flock. It is pure white with a little dusky 

 shade on wings and tail, crown, nape and back 

 showing very pale blue. 



THREE NEW PELECYPODS FROM THE COLORADOAN OF THE 

 PEACE AND SMOKY VALLEYS, ALBERTA* 



By F. H. McLearn. 



The revised stratigraphy of the Cretaceous of 

 northern Alberta is treated in recent reports of the 

 Geological Survey of Canada.' To them the read.r 

 is referred for detailed lithological and structural 



*Publi.shed with tlie permis.sion of the Directing 

 Geologist, Geological Survey of Canada. 



1. McLearn. F. H., Peace River Section, Alberta, 

 Geol. Surv., Can.. Summ. Rep., 1917, C, pp. 14C- 

 21C. 



McLearn, F. H., The Cretaceous of Peace and 

 Athabaska Valleys, in Dowling. Slipper & Mc- 

 Learn, Investigations in the Gas and Oil fieelds 

 Alberta, Saskatchewan and Manitoba. Geol. 

 Surv.. Can., Mem. No. 116, Part III, pp. 27-.33. 



McLearn. F. H.. Cretaceous Lower Smoky River, 

 Alberta, Geol. Surv.. Can., Summ. Rep. 1918, C, 

 pp. 1C-7C. 



McLearn, F. H., New Species of Pelecypods from 

 the Cretaceous of Noorthern Alberta, Geol. Surv., 

 Can., Mus. Bull., 29, pp. 9-12, i)ls. 3-5. 



descriptions, thicknesses, areal distribution, corre- 

 lation, correlation table, faunal lists, and description 

 of new species. A statement of the principal facts 

 concerning the Coloradoan of the Peace and Smoky 

 Valleys is given below and is followed by the des- 

 cription of three new species of pelecypcds. Thanks 

 are due to Dr. T. W. Stanton for aid in the study 

 of the fossils. 



Formations. The Colorado group of the Peace 

 and Smoky valleys includes, in ascending order, 

 the St. John and Dunvegan formations and the 

 lower shale and Bad Heart sandstone members of 

 the Smoky River formation (the age of the lower 

 100 feet of the upper shale member may be either 

 Coloradoan or Montanan). The St. John consists 



