68 THK NAUTILUS. 



Young specimens are also before me in which the violet color of the 

 aperture is wanting. 



OLIVA AMETHYSTINA (Bolten). 



Porphyria amethystina Bolten, Mus. Bolt., p. 35, 1798. 



Valuta cruenta (Solander) Dillw. Call, I, p. 514, 1817. 



Oliva guttata Lam., Ann. du Mus., XVI, p. 313, 1810. 



Both Bolten and Lamarck refer to the same figures by Martini 

 (Conch. Cab., II, tab. 46, figs. 491, 492). The variation of the 

 species is well shown by Marrat under emicator Meuschen (Thes. 

 Conch., pi. 5, figs. 51-60). This species may vary from spotless to 

 the typical form with large regular spots, or to that with large splotches 

 and fine flecks. Many specimens show a peculiar malformation 

 consisting of an elevated ridge at the periphery. Additional syn- 

 onyms by Marrat are aurata Link and mantichora Duclos. 



OLIVA ISPIDULA Linne. 



As stated under ccerulea varieties of this species closely resemble 

 the younger and smaller examples of that species. The species is ex- 

 tremely variable, more so, perhaps, than any other, notwithstanding 

 it is as a rule readily recognized by its brown aperture. Specimens 

 from Samar, Philippines, collected by Mr. E. L. Mosely, are all 

 uniform in color, representing the dark reticulated form (Marrat, 

 Thes. Conch., fig. 248), The var. flaveola Duclos is yellow with a 

 white aperture; its relation to ispidula is apparent from the fact that 

 specimens frequently show a trace of the broad dark subsutural band 

 common to many of the typical examples. This species seems to 

 lead to the small high-spired species, including 0. flamulata Lam., 

 duclosi Reeve (jaspidea Duel., non Gmel.), rufopicta Wienk., kakon- 

 tina Duel., australis Duel., panniculata Duel., etc., some of which 

 resemble species of Olivella. 



MOLLUSKS OF TJNIONVILLE, CONN. 



BY FRANK C. BAKER. 



In June, 1909, several days were spent in the village of Union- 

 ville, and much of the time was enjoyably occupied in hunting for 

 the lowly mollusks. As local lists from Connecticut are rare, it has 

 been thought that a catalogue of the species obtained might be of 

 value for the purpose of geographic distribution. Unionville is 

 about nine miles west of Hartford. 



