Sterki : Some Notes on Sph^riid.e. 427 



Mr. S. Stillman Berry has sent a number of lots collected by him 

 in 1919 and in former years. One rather remarkable lot is from 

 Lake Winnecook, Unity, Maine, collected in 1909. It surprised me to 

 receive from a locality in New England a faunula comprising peculiar 

 forms of known species and quite a number of new species. I refer 

 at the outset in what follows to the material sent me by Mr. Berry 

 from his collections made in Maine. 



P. crquilaterale Prime, differing from most other forms by the less 

 elevated beaks and generally more rounded outlines; P. pauperculum 

 nylanderi Sterki. somewhat different from the same from other places 

 in New England (over three hundred specimens) ; P. ferrugineum 

 Prime, less inflated than the usual form and with the ridges on the 

 beaks strongly developed. (For P. dcflcxum, comprcssuni mutatum, 

 dccisum, paradoxiim, and grtseohtm, n. spp., and forms, consult infra, 

 Descriptions Nos. 1-5.) It must be regarded as even more remarkable 

 that among the five hundred specimens sent me there were none of 

 the many species known to occur in New England, some even in the 

 same part of Maine, with the exception of the three mentioned above 

 at the beginning of this paragraph. There were no specimens pf 

 P. compressiim, typical, and the New England form cnrvatum, varia- 

 hile, spharicum, abditmn, splcndidnluin, rotnndatiim, ventricosmn, and 

 a dozen others. It certainly would be worth while to thoroughly 

 explore that whole vicinity in order to determine the ecological and 

 systematic significance of its fauna. Sorne interesting forms of 

 Musculiwn and Sphccrkim should also be found there. 



Mr. Berry also sent me some material collected near Iceberg Lake, 

 Glacier National Park, Montana, in the year 1910. A few specimens 

 appear to be identical with P. marci Sterki from Utah. I describe as 

 new a species collected by Mr. Berry in Elk Creek, Meagher County, 

 Montana, in the year 1914, P. limpidwn Sterki (see infra, Description 

 No. 6). 



From the same correspondent I received a number of lots of Pisidia 

 collected in southern California, mainly in the San Bernardino Moun- 

 tains, during the years 1908-19 19. In order to their exact determi- 

 nation closer examination and comparison is necessary. 



In the same sending there were a number of Pisidia collected by 

 A. W. Hanham at Quamishan, British Columbia, among them P. 

 columhianum Sterki. Two species from this locality I have described 



