VI 



THE NAUTILUS. 



Mexico, Notes on shells collected at Balsas 

 Minnesota Mollusks, Records of 

 Mitramorpha eocenensis Aldrich, n. sp. (fig.) 

 Mollusca of Keene, New Hampshire , 

 Nason collection . . . . . 



Nassa perpinguis var. bifasciata Berry, n. var 

 New England fauna, Shells new to the 

 New Mexico, Mollusks from around Albuquerque 

 Nitidella hendersoni DalL, n. sp. ... 



Notes and news . . . .10, 33, 59, 71, 



Nudibrauch records. Two interesting New England 

 Opisthobranchiata, Northern 

 Palio lessonii .... 



Paludestrina salsa Pils. 



Partulina mutabilis Baldwin, n. sp. 



Partulina wiuniei Baldwin, n. sp. 



Pearl hunting in the Fox River, Illinois 



Petrasma Dall., n. subgenus of Solemya 



Pholadomya pacifica Dall., n. sp. 



Physa sayi ....... 



Pisidium in Massachusetts .... 



Planorbis bicarinatus 



Planorbis bicarinatus portagensis Baker, n. var. 



Pleurobema tombigbeanum Frierson, n. sp. (PI 



Polygyra matermontana Pils. 



Polygyra mooreana ..... 



Publications received . . . . .34 



Pyrgulopsis wabashensis .... 



San Diego, Mollusca dredged at 



Scala, Another large miocene 



Shells collected at Balsas, Guerrero, Mexico, by 



Koch in Dec, 1908 . 

 Showalter collection . 

 Sicily, Shells of . 

 Sigaretus (Eunaticina) erectoides Aldr., n. sp. (PI. 



8,9) 



Solemya ...... 



Solemya (Acharax) bartschii Dall., n. sp 

 Solenomyacid£e, A revision of the 



III), 



4t, 



. 114 

 . 119 

 . 13 

 . 32 

 . 10 

 . 39 

 . 95 

 . 103 

 . 31 



82, 95, 122 

 . 13 

 . 23 



15, 16 

 53,82 

 . 68 

 . 67 

 . 122 

 . 2 

 115, 142 

 . 19 

 . 113 

 . 122 

 . 45 

 . 27 

 . 114 

 . 66 



83, 96, 122 

 . 56 

 . 134 

 . 80 



Walter E. 



V, figs. 



114 

 117 

 128 



75 



1,2 



61 



1 



