60 THE NAUTILUS. 



is somewhat similar to that of Clausilia and the Belogonous Helices 

 — European, Oriental and South American. — H. A. Pilsbry. 



A Biological Recovnoissance in the Vicinity ov Flat- 

 head Lake [Montana]. — By Morton J. Elrod. (Bulletin Univ. 

 of Montana, No. 10.) A synopsis of work in all branches of Zool- 

 ogy done at the Biological Station of the University of Montana. 

 Besides a good many notes on moUusks throughout the text, there is 

 a catalogue of Montana shells (pp. 170-174), and illustrations of a 

 series of varieties of Pyramidula strigosa (plate xxvii) and P. Elrodi 

 (pi. xxxii). 



Classification of the Bkitish Species of the Genus 

 Solen L., etc. By H. H. Bloomer (Journal of Malacology, x, 

 1903). Mr. Bloomer, continuing the series of articles upon the an- 

 atomy 0^ Solen, gives us a description and illustrations of Ceratisohn 

 legumen, Solecurtus strigiUatus and S. candidus. The former has 

 much in common with S. ensis, while as would be expected, Sole- 

 curtus differs in many respects. Respecting the true Solens, Mr. 

 Bloomer looks upon " Solen vagina as a more primitive form, and 

 JSnsis ensis and E. siligua as more specialized forms." Cidtellus 

 pellucidus coming somewhere between. He finds anatomical differ- 

 ences between Solen and Ensis, sufficient to call for the generic sep- 

 aration of the latter group, which until very recently has been con- 

 sidered a subgenus of Solen. These careful, comparative studies in 

 Pelecypod anatomy are valuable and worthy of imitation. 



MRS. MABY P. OLNEY. 



We have recently learned with great regret, of the death of Mrs. 

 Mary P. Olney, of Spokane, Wash. Mrs. Olney was a devoted 

 lover of nature, and notwithstanding her advanced years, has taken a 

 very active interest in the study of mollusca. Interesting notes such 

 as : " Odor of snails," " Young Pyramidula strigosa," etc., were fre- 

 quently contributed to The Nautilus, and one form, Polygyra 

 mullani var. Olney^>, was dedicated to her. 



