16 THE ANOUUA OF NE'V BRUNSWICK. 



streanif. in the southern parts of the province, diflfer materially 

 from this vigorous pustular form. The body is long and slender, 

 the hind legs also longer and the feet less webbed. General 

 color above olive green with small brown spots, throat and under 

 parts white, sparingly spotted with brown ; tympanum smaller. 



This variety is more terrestrial,being often found among graf s 

 and weeds at considerable distance from water ; and, owing to 

 the unusual length of hind legs, is able to make long leaps 

 equalling the Green Frog in this respect. On account, too, of 

 the relatively greater length of the fore limbs its position on land 

 is le^^s prone than is generally the case among frogs. It consti- 

 tutes the R. clamitans of some authors, and seems to have been 

 the one so classed by Daudin in 1802. 



Sometimes colonies of black specimens of medium size are 

 met with having an unusual amount of blotching and mottling 

 of the inferior surface of the body and limbs. This form was 

 first described by Professor Agassiz, Avho collected it about Lake 

 Superior, and named it R. nigricans, but later naturalisis have, 

 for Avhat seems good reasons, relegated it to the position of a 

 mere variety oi R. Jontianlis. 



Again specimens are found almost similar to R. clamitans hut 

 with muzzle more sub-acute, the upper surface pale green with 

 much dark marbling and dotted with yellow points after the 

 pattern of some specimens of R. sylvatica. It has a dark band on 

 the back of the humerus and covering the elbow much as in R. 

 V. brachycephala. As far as my observation goes R. clamitans is 

 alone entitled to the distinctive appellation ''clamata" used by 

 some instead of "foiitinalis," for I have never noticed the habit 

 among the other varieties. 



The wisdom of uniting these apparently different tyjies un- 

 der one species cannot be expected to meet with general approv- 

 al. It will likely be dissented from by such as are ready to 

 establish species on minute and merely superficial characters 

 which are so apt to vary according to local environment, and 

 found always susceptible of a serial arrangement, linking the ex- 

 tremes to some more central specific form. When naturalists, as 

 before observed, had not, for purposes of comparison, extensive 

 collections from large areas, but were guided by a knowledge of 

 local types, it was reasonable to regard these forms as entitled to 



