A See ROS sane nen Me He eee Ea 2 — 
Siredon into Amblystoma. 371 
the end of the tail, thus making the vari 
eas eerie See we tee 
their lower surfaces with lamellar fimbrie. 
palatine series of teeth have already been mentioned, and their 
— in this species of Siredon is represented in figure 10. 
former consists of a single row of slender pointed teeth on 
the premaxillary and maxillary bones. The palatine arch of 
teeth, situated on the vomerine and pterygoid bones, forms a 
harrow and more complex series, only the position of which is 
f the lower jaw consist of a 
mo Siredons, No. 1 is the individual figured in the accom- 
 Panying plate, and No. 2 a specimen preserved a short time in 
ee No. 1. No. 2. 
a Inches. Lines. Inches. Lines. 
2 Length from snout to end of tail,...........---- a. 8 8 
4 a a “© gular fold, i241 1 1 
; j or eo ie i. 9 
2 * OG ls bs cc Ra ec ode oe 3: 10 
Wig Civic, SM Bilin lies sce. cer 4:4 4-5 
ae idth of head where greatest,......-.....---s« : 2 — 
i ‘ “ tongu e, hae i a 
oS “ance between eyes anteriorly,..........-.-- 7 7 
‘ is z outer nostrils, 5 5 
————_ Mength of ant % Fa : 
ee Pp : 
a posterior “ a ee a 1 2 
Distance between outstretched toes, 9 S28 
Height of tail including membranes where greatest, 1 3 1.8 
4 Before the transformation was entirely mpleted, the generi 
& , | pleted, 
e characters of -AmBlgafomen had become uamistekable ; although 
following measurements are taken from two of the Lake 
home 2 ae eee 
