18 THE NAUTILUS. 



in any genus unless in Dr. Dall's Opisthosiphon, although even 

 there they fit only by virtue of having a siphon back of the 

 aperture, but otherwise do not resemble nor have much in 

 common with the Ctenopomas that form the bulk of Dall's genus; 

 and secondly, the remarkable development of large Macroceramus 

 of the M. hendersoni group and of long, slender Urocoptis-like 

 Microceramus. Like the operculates these all appear to be new 

 in species and groups. 



The absence of all Urocoptids (save the one U. camagueyana 

 Torre) is striking. None of the other shells that do seem refer- 

 able to published species are typical except the Pleurodonte and 

 Liguus, which are widely distributed over the island, and signify 

 but little in questions of local distribution. 



The strangeness of this mollusk group which appears to be 

 removed from the Oriente and Trinidad groups gives rise to some 

 perplexing queries in distribution. There seems to be a sort of 

 vague line of connection with northern Santa Clara and diagon- 

 ally south across the island and including the Isle of Pines. 

 This is hinted at by a few species rather than proclaimed by 

 the total. We have still much to learn about Cuban land shells. 



What we had anticipated would be a very hard trip turned 

 out to be one of our easiest ones. The open, level country made 

 travel in a volanta-like trap possible and the few natives living 

 in this sparsely settled country are hospitable to the point of 

 embarrassment. We slept in our own hammocks and strangely 

 enough our only discomfort was occasioned by the cold nights. 

 We nearly froze to death. 



SHELLS OF PUT-IN-BAY ISLAND, LAKE ERIE. 



BY JOHN A. ALLEN. 



Put-in-Bay is a beautiful island in Lake Erie, nearly all 

 cultivated with orchard and vineyard, but retaining some rocky 

 forest. It is of limestone formation, contains caves, and at 

 places is faced with cliffs, and in the wilder parts is adorned 

 with brilliant flowers, scarlet Silene and blue Pentstemon . 



The island is about three miles from the Ohio shore, is about 



