130 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



latter became less abundant and the former more so, until, in the 

 region opposite the Isle of White, the shrill pipe of K. johmtonci was 

 not to be heard, while the softer note of E. lutcolus filled the air, 

 suggesting a chorus of toads in the distance. 



Whether this region marks the present western limit of the range of 

 K. johnstonci, and, in case it does, whether E. hdcolus tends to crowd 

 it out in the struggle for existence, are interesting questions still to be 

 settled. 



Another question in regard to distribution comes up in this connec- 

 tion. In the case of the toad, we have seen that it became very 

 abundant soon after it was introduced but that now its numbers have 

 decreased until it is little more common than the American toad in 

 New England. Both species of Eleutherodactylus are spreading in 

 Bermuda and both are extremely abundant within their present range. 

 It remains to be seen whether they will decrease in numbers, as the 

 toad has done, when they have spread over the whole extent of the 

 islands. 



The females of E. hdcolus contained large eggs in July. Barbour 

 (: 10) says: 



' The development of this frog is of interest. The eggs, from thirty 

 to thirty-five in number, are laid in depressions in damp ground under 

 stones or logs. Mr. Wight has also found these nests and writes: 



'Port Antonio, Jamaica, Nov. 30. Thirty-three eggs in slight de- 

 pression, damp ground. Eggs scarcely adherent. Movements of 

 embryos visible. 16S hours later two frogs hatched. After 312 hours 

 the whole lot had taken on the light brown color which is typical 

 of many adults.' ' 



Dr. ( Yozier, in the letter of Sept. 15, previously mentioned, confirms 

 this observation: 



" Also eggs, which I take to be those of the other, larger form (which 

 on dissection now seems 'ripe'), were found among stones in an old 

 stone wall. These, eggs were laid in a cluster of about. 30, closely 

 adhering to one another upon damp, firm earth; the eggs in this case 

 were 3 mm. in diameter, the jelly being somewhat swollen." 



In another letter dated Feb. 1, 1917, he says of its winter habits: 



'The E. luteolus does not hibernate, at least not invariably. Mr. 

 Godet's invaluable cat is still catching them in small numbers." 



