Occasional Papers of tJic Museum of Zoology 3 



total length 2.y times, 2.2 times the length of the snout. Snout 

 rounded, with obtuse canthus rostralis. Tympanum distinct, 

 the greatest diameter contained in the length of the snout 3 

 times, in the diameter of the orbit nearly 2.3 times. Digits 

 well developed, with large adhesive disks ; the fingers free, 

 first a little shorter than second ; toes fully webbed ; a large 

 oval inner and a small indistinct outer metatarsal tubercle ; the 

 hind limb being extended forward the tibio-tarsal articulation 

 reaches the tip of the snout. Skin of l:ack finely wrinkled and 

 smooth except for a few low tuliercles on each side, derm of 

 head a little rougher, on the up]:)er eyelids and sides of snout 

 distinctly granular ; a well developed supratympanic ridge, and 

 a few tubercles behind the angle of the mouth ; belly granular. 

 Color above brown with indistinct darker markings, and a 

 l-lack line along the suprat}-mpanic ridge; limbs brown with 

 blackish cross-bars; belly white, immacidate ; chin and throat 

 mostly pale brown. 



Total length, 34 mm. ; length of head. 12.25 mm. ; width of 

 head, 13 mm.; length of snout, 5.5 mm.; hind limb to tip of 

 longest toe, 59 mm. ; fore limb to tip of longest finger, 22 mm. 



Notes on Paratypcs: Fourteen specimens of this form 

 were obtained by the Bryant Walker Expedition in 19 13, all at 

 an elevation of about 5,000 feet on San Lorenzo. Two of these 

 have been presented to the British Museum, and one to the 

 IMuseum of Comparative Zoology. The dififerences in structure 

 exhibited by the material have been adequately given in the 

 diagnosis. The only dififerences in coloration in the preserver! 

 specimens are in the distinctness of the dark dorsal markings, 

 which consist of an interocular band, a canthal streak, a vertical 

 infraorbital bar, a supratympanic line, a poorlv defined infra- 

 tympanic streak, a broad chevron or cross band on the shoul- 

 ders, a narrower chevron, stripe or spot in the lumbar region. 



