60 THE NAUTILUS. 



is somewhat similar to that of Clausilia and the Belogonous Helices 

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



A BIOLOGICAL RECONNOISSANCE IN THE VICINITY OF 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 mollusks throughout the text, there is 

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

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

 (pi. xxxii). 



CLASSIFICATION OF THE BRITISH 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 of Sulen, gives us a description and illustrations of Ceratisolen 

 legumeii, Solecurtus strigillatus and S. candidus. The former has 

 much in common with S. enst's, 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 

 JSusis ensis and E. siligua as more specialized forms." Cultellus 

 pelluc/dus 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. MARY 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^E, was dedicated to her. 



