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TnE BATRACIIIA OF NOKTIl AMKRICA. 



357 



There lU'c tliroe .styhss of coloration prevali'iit anion;;- individuals of 

 lliis variety, viz: Tliat which prevails anion;;' more nortlicrn specimens, 

 but wliich occur^as tar soutli as San l)iejj;o, where longitudinal bands 

 are wanting or broken into irregular small spots, and where the inter- 

 ocular triangle is often wanting. SecontI, where the general color is 

 darker, with three broad dorsal bands or the si)()ts into which they aro 

 resolved. The largest specimens are of this type; numbers having 

 been brought from FortTejon and a few from northward. Third, rep- 

 resented by 11 large female specimen from .Monterey, Cal., is without 

 markings above, but the borders of the exterior color of tibia*, the sides, 

 and the pectoral region are closely l)rown .spotted ; in all the others the 

 under surface are immaculate. The tints of this style seem to bo more 

 delicate, and it has a more hylinc aspect than some of the other.s. 



Head small, rather pointed, but broader than long. Tympanum 

 small, nearly half the diameter of the eye. Eyes not very prominent; 

 a slight fold of skin above the tympanum. A very prominent ono 

 across the breast. Skin above linely pustulated with larger scattered 

 tubercles, not so close as in JI. vrrsivolor. Tibia about half the leugth 

 of the body. The gular sa(' is largely developed. 



Disks on extremities large; the largest eipialing the tympanum. 

 The hand considerably longer than the fore-arm ; outer linger longer 

 than the second ; a slight web at base. Tibia half the length of body. 

 Outer toe a little longer than the third. Membrane extending from 

 disk of outer too to middle of the third joint (from the tip) of the fourth 

 or longest; from the third articulation (from tip) of the Iburth toe 

 obliquely to the disk of the third toe; from the third articulation of 

 the third toe to the disk of the se(!ond ; from the second articulation of 

 the second too to penultimates articulation of the lirst. Thus the mem- 

 brane is nearly wanting along the inner side of three terminal Joints of 

 the third and fourth toes and tho two terminals of the second, while on 

 the outside it extends nearly orcpiite to the disks of the second and third 

 and to the penultimate articulation of the lirst and fourth. A promi- 

 nent tubercle at base of inn«>r toe and a smaller one oi)posite on the 

 sole. ICxpansion of sacral apophyses not very great. The heel of tho 

 hind leg extended reaches to the anterior border of the orbit. 



In a very large specimen the general color above is a greenish-ash 

 (in some a dark olive) and blotched with darker. There is a conspic- 

 uous subecpiilaterally triangular patch between the eyes, extended 

 acutely backwards for a short distance. The back is variously blotched ; 

 tiu>. most conspicuous of the blotches arc considerably elongated, and 

 arranged ono or two in a line on each side of the back in a lino with 

 tho eyes ;,nd i)arallel ; the middle of the back and the extreme sides 

 of tho body aro sparsely provided with smaller, usually subcircular, 

 sometimes elongated blotches. There is a distinct aiul rather broad 

 dark line from tho snout through the nostrils to the eye and a wider 

 vilta from tho eye, involving the whole lympanum, to a little past tho 



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