THE BATRACHIA OF NORTH AMERICA. 449 



and fourth equal, the secoud least. All are thickened at base and 

 tapering to tips, and have a bulb under each joint and several on 

 the palm. There is considerable power of opposition in the inner fin- 

 gers. The tibia and femur are considerably more than half the length 

 of the body. The former is longer than the foot; the femur intermedi- 

 ate. The fourth toe longest; the third rather longer than the fifth, 

 and extending to the middle of third phalange (from tip) of longest ; 

 the second and first successively shorter. All the metatarsals are 

 separated by about half their distal extremities and the interval filled 

 by membrane. The web extends from the first joiut (from tip) of the 

 outer to3 to the second of the fourth ; from this same joint to the first 

 of the third toe 5 from the second joint of the third to the first of the 

 second; from the secoud of the second (extending by a very narrow 

 web to the first) to the first of the first ; the outlines, when stretched, 

 very concave, elongated, and rather sharp. The terminal phalanges of 

 all the toes and the last two of the longest are thus free. The cunei- 

 form process is well developed. 



Upper parts a yellowish gray, tinged with brown on the sides. The 

 side of the head below the can thus rostralis and lateral fold, including 

 tympanum, is of a dark reddish-brown (sometimes black), extending in 

 an acute angle to a termination just above the insertion of the arm or 

 posterior edge of the maxillary fold. Edges of both jaws dark brown, 

 a little mottled. A yellowish-white line from the tip of the snout 

 parallel with the margin of the up[)er jaw, and, running over the max- 

 illary fold, terminates with it. All the lower and interior fiices of the 

 body are j'ellowish-w^hite, with an obscure mottling of brown on the 

 throat. A few scattered spots of black on the sides and the posterior 

 portion of the back, principally on the larger tubercles. There are 

 three or four transverse dark bars across the faces of the thighs; the 

 posterior faces are mottled with obscure brown, on a yellowish ground; 

 the brown aggregated into a ring around the anus. The inferior sur- 

 faces of the tarsus and fore-arm dark brown; an elongated brown spot 

 at the proximal extremity of the arm, extending obliquely from the 

 lower jaw. 



Some specimens from Eacine have the body rather stouter and the 

 legs shorter, the web of hind feet rather more developed. A number 

 of faint white spots on the posterior face of the buttocks. Others from 

 the same locality, however, have the characters as given above. Oc- 

 casionally the membrane of the foot does not extend bo^'ond the third 

 joint (from tip) of the longest toe, and in the typical specimen from 

 Carlisle it only reaches to the second joint by a narrow margin. 



A specimen from Quebec is rather darker than usual, especially on 

 the sides, and has the feet webbed more than is described above. 



A female specimen from Westport, N. Y., is stouter and the head 

 broader than in a male. The legs are rather shorter. There is less 

 granulation on the pubis, while the granules on the posteroiuferior 

 1951— Bull. 34 29 



