476 pr(x;eedings of the national museum vol. loi 



finger pad 1.5; diameter of fourth toe pad 1.0; tibia 15.5; foot 12.0; 

 total body length 30.5. The tibiotarsal joint reaches to between eye 

 and nostril. 



Variation. — The other two males are remarkably consistent. 

 U.S.N.M. No. 123G99 is not quite so rugose as the holotype and almost 

 entirely lacks gular pigmentation. There is little trace of interme- 

 diate metatarsal tubercles, as mentioned in the description of the 

 holotype. All three specimens fall within 0.5 mm. of the same length. 



Remarks. — This species is most nearly like Hyla arhorescandens, 

 differing from it in possession of (1) a larger vomerine tooth series, 

 which is also more anteriorly located; (2) canthi meeting bluntly on 

 the snout instead of coming to an angular point; (3) granular eye- 

 lids; (4) a bifid outer subterminal tubercle on the hand (although 

 there is a slight tendency for this tubercle to divide in arhorescaoi- 

 dens) ; and (4) lighter color and smaller size. 



Appended is a description of the tadpole of this species which 

 Miller also collected. There is a transitional series present that 

 bridges the gap from the tadpole to the adult. 



Each specimen in a series of 10 has 4 legs and the tail in a state of 

 partial absorption. The tadpoles vary from 14 to 17 mm. in snout- 

 vent length and the tails from 7 to 27 mm. They are not as granular 

 as the adults and vary in granularity in proportion to the size. 

 Hand webbing is usually about the same as in the adults, proportional 

 to size, but occasional specimens show slightly less. The outer sub- 

 terminal articular tubercle varies in the degree to which it is divided. 

 Occasional specimens show bifid third articular tubercules. A tend- 

 ency toward this is present in the U. S. National Museum paratype. 



Each of three tadpoles in another series has only two legs. They 

 measure as follows: 



As the hand webbing of one specimen (which possessed labial teeth) 

 was well developed, it was extracted from beneath the membrane 

 and was found to be identical with the webbing on the hand of the 

 type specimen. 



A typical tadpole has the eyes located above the lateral line, but 

 nearer this line than the middorsum; spiracle sinistral, somewhat 

 closer to anus than to tip of snout; spiracle pointing upward and 

 backward ; anus dextral ; tail insertion anterior to a transverse plane 

 located at level of insertion of hind legs; caudal membrane trans- 

 lucent and flecked with brown dots; upper labium V-shaped and 

 containing four rows of labial teeth, innermost row broken medially 

 just above the horny beak; beak small, black, and serrate; five com- 



