1006 
Analysis of genera 
sX . Echldninae . Vertical fins well developed, 
dorsal beginning before vent. 
1 
b » Teeth all or nearly all acute, none 
molars. 
1 
c . Tall 1 1/2 to 2 times long as combined 
head and trunk. 
1 
d . Front nostril in simple tube; snout 
and lower Jaw tips without barbel 
like appendages. 
Evenchelys. 
Tall equals or little longer or short™ 
er than rest of body. 
1 
i . Trunk very slender, elongate, 
depth 40 to 55; head 12 to 17. 
Pseudechidna. 
e 
Depth less than 50; head less than 
12 . 
Hind nostril without tube or with 
tube much shorter than simple 
tubes of anterior nostrils. 
g~. Depressible canines few (1 to 
10 ) 
Lycodontls 
