178 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. XI. 



trees along streams, and seldom form forests of any extent. The 

 region is apparently in the Canadian zone, but the open grassy nature 

 of the hills and the presence of Citellus v. donglasi give it a Transition 

 aspect." 



At Goklbeach a new species of Thomomys was procured which has 

 been named after its captor, and also a new form of Peromyscus, and 

 in the district between Crescent City and this first Oregon station, 

 Sciurus douglasi and 6". d. mollipilosus appear to intergrade, individu- 

 als that may be attributed to either form having been taken in both 

 places. The only specimen of Sciuropterus secured during the entire 

 journey was taken at Goldbeach, where it was said to be of rare 

 occurrence. 



Mr. Heller writes of the animals not collected that a small colony 

 of beaver, Castor c. pacificus, is said to "inhabit a wooded island a few 

 miles up the river. The trappers distinguish two species, a black 

 form which builds houses, and the common reddish brown form which 

 lives in holes along the banks." 



From Goldbeach Mr. Heller went to Agness, "a small station at the 

 mouth of the Illinois River about thirty miles from the mouth of the 

 Rogue River," where he passed a week in the mountains hunting black 

 bear unsuccessfully. He procured two black-tailed deer, O. columbi- 

 anus, and only a few small mammals of the same species obtained 

 at Goldbeach. Proceeding northward along the coast, Marshfield was 

 the next collecting station, where two weeks were passed. Mr. Heller 

 writes that the "marshes near the town of Marshfield are infested by 

 Mus norvegicus and M. musculus, which made trapping rather disagree- 

 able. The Coos Bay is more isolated than any other I have made 

 collections in, and is perhaps better characterized by what it lacks 

 than in any other way. The region has no connection by its streams 

 with the Willamette Valley or the Cascade Range as does most of the 

 country drained by the larger streams, and this perhaps accounts for 

 the absence of such genera as Thomomys, Citellus and Erethizon, 

 etc." At Marshfield the chipmunk that I have characterized as 

 Tamias t. littoralis was first met with. Gardiner was the next stopping 

 place, "in a low, hilly region on the Umpqua near its mouth. The 

 region is intermediate in character between the sand-dunes of the 

 coast and the low rolling country flanking the mountains. It is a 

 country of low hills and lakes and deep lagoons along the rivers. The 

 rock formation is chiefly horizontally bedded soft sandstone which has 

 been cut into rather deep ravines by the streams. The deep sloughs 

 and the great inland extension of the tide would suggest a sinking, or 

 rather sunken, coast. The country bordering the sand-dunes is 



