Occasional Papers of the Mitsenin of Zoology 3 



and Little Charity. On Charity Island two quite distinct 

 races were found. In the interior of the island, shells from 

 "imder rotten logs and stumps" are deeply colored, the ground 

 color throughout being a reddish-yellow with dark, conspicuous 

 flammules above, which extend a short distance below the 

 periphery and, in most cases, terminate abruptly, being bounded 

 below by a conspicuous band of the ground color, bslow which 

 the base is distinctly streaked. Occasionally the upper flam- 

 mules extend more or less distinctly over the band and connect 

 with the basal streaks, but in such cases the flammules are 

 narrowed and abruptly curved as they pass over the band, 

 which is, consequently, always obvious. 



In shells collected along the shore, the groimd color is 

 much lighter and the base is entirely wdthout streaks, or, when 

 present, the streaks are faint and narrow. 



Unfortunately this difference was not noted in the field and 

 no exact records of the range of the two races were made. 

 But from the occurrence of occasional individuals of the dark 

 race among the beach shells and vice versa, it is probable that 

 the two races inosculate more or less along the borders of their 

 respective habitats. On the whole, however, the two races 

 are distinctly marked and easily separable. In size they run 

 about the same, but the shells from the interior of the island 

 appear to be rather more elevated. 



The specimens from Little Charity are mostly bleached, 

 but, though smaller than those from the main island, appear 

 to be more clos:ly relatetl to the darker colored race found 

 there. 



5. Pyramidula cronkhitei anthonyi Pilsbry. Apparently 

 a])undant on Charity Island. A rather thin, light colored form 

 with line stri,x, but otherwise typical. 



6. Zoiiitoides arborca (Say). Abundant on Charity 

 Island. 



7. Bifidaria contracta (vSay). A few examples were col- 

 lected on Charity Island. 



8. Succinea avara vcrincia v^ay. A single specimen was 

 found on Charity Island. 



