2G8 



BULLETIN 34, UNITED STATES NATIONx\L MUSEUM. 



The head is short aud wide, and its length varies so as to enter from 

 four to four aud a half times in the total length. The extended hind 

 leg brings the heel to the posterior lower or middle of the orbit. The 

 muzzle viewed from above is rounded, aud in profile is truncate, and 

 not projecting beyond the premaxillary border. It is shorter than the 

 length of the orbit, and the nostrils are terminal. The tongue is flat 

 and thin, and is a long oval in outline. The membranum tymiiani is 

 quite distinct, and is subround. Its diameter is a little less than half 

 the length of the eye slit. The parotoid gland varies in form from 

 nearly round to a moderately elougate-oval; in either case it has an 

 anterior prolongation to the border of the orbit. The glands of the in- 

 tegument of the upper surfaces vary from moderate to large size. 

 They are smaller on the sides and on the limbs, excepting a large 

 oval one on the superior face of the tibia. The inferior surfaces are 

 coarsely areolated, with a few more distinct tubercles posteriorly. 

 There is an infolded ridge on the inner edge of the tarsus. The pos- 

 terior foot varies in relative width in different individuals and locali- 

 ties. In northern specimens the sole is wider, and the palmatiou 

 extends to the ends of the toes. It is emarginated, so that the edge is 



¥ig. Qd.—Bufo columMensis colmnhionsis. No. 1151G. Kowaldn Valley, "W. T. ; {. 



Measnrcinents of No. 328. 



Length of Lead and body 



Length of head to j)Osterior edge of membranum tympani 



AVidth of head at j)Osterior edge of membranum tympani , 



Lengtli of fore limb 



Length of posterior limb „ 



Length of tibia , 



Length of tarsus 



Length of remainder of foot ^ 



M. 

 .124 

 .021 

 .034 

 .061 

 .116 

 .039 

 .024 

 .045 



