Hinckley.] 92 [October 4, 



the entire tail and was floating about in a helpless condition, his 

 companions busily gnawing the flesh from his body, while yet 

 alive. 



May 20. Legs developed so that the feet and toes are well 

 defined. 



May 27. The pigment of gold color on the dorsal surface, 

 including that of the glandulous lines, has gradually disappeared, 

 leaving the latter a line of well defined pores. A band of deep 

 brown extends across the head between the eyes, and spots of the 

 same tint are seen on the back, also transverse bars on the legs, 

 and more or less brown flecking on the tail. All the tadpoles 

 examined have now developed the third, short, fringed fold under 

 the upper lip each side the jaw. For description and figure of 

 the mouth of this species, see Proceedings of this Society, Vol. 

 xxi, p. 310, pi. 5, fig. 6. Microscopic examination shows each 

 division or tooth of the black fringe at the edge of lip and folds 

 of the mouth, to be composed of a series of cup-shaped forms 

 rising one out of the other ; the rim of each is dentate. The most 

 fully developed teeth number four series beyond the tissues of 

 the lip. Mr. Van Bambeke in the Bull, de l'Acad. royale de Bel- 

 gique T. xvi, 2m serie, p. 353, pi. i and n, describes and figures 

 these organs for the tadpoles of R. temporaria of Europe, and I 

 find the description and figures answer for the same organs in 

 R. sylvatica. Mr. Van Bambeke says, " Chez la Ran a temporaria, 

 l'extremite recourbee est terminee en palette, presentant des 

 denteiures ou crenelures sur son pourtour, l'entonnoir est large." 

 See also Mr. Fernand Lataste, " Etude sur le Discoglossus pictus, 

 Actes de la Soc. Linneenne de Bordeaux, T..xxxiii, (Quatrieme 

 serie; T. m) pi. v. fig. 6, 1879. 



May 29. A light-colored ridgy line has appeared connecting 

 the nostril opening with the nearest corner of the eye. At this 

 corner of each eye the nictitating membrane is developing. Tad- 

 poles are resting much of the time in the sunlight above the 

 green growth under water. 



May 31. A narrow whitish stripe has come into sight on each 

 side the head, beginning about half way between and about an 

 equal distance below the nostril opening and eye, running down- 

 ward and backward to a point which later takes its place above 

 the corner of the young frog's mouth. The tadpoles have now 



