370 



TELEOSTEI 



possessing compound vertebrae, abbreviate heterocercal tail, ganoid 

 scales with peg and socket articulation, fulcra, and possibly a 

 splenial and supra -angular, it becomes obvious that the group 

 ( fsospondyli) can no longer be fitted into any phylogenetic scheme. 

 The Leptolepidae, however, may be classed as primitive Teleosts, 

 and the remaining families can be grouped together into various 

 sub-orders with considerable confidence, but of the relationship 

 between these sub-orders, of their exact position on the phylogenetic 

 tree, we know as yet comparatively little. 



Order 3. TELEOSTEI. 



Sub-Order I 

 ESOCIFORMES. 



Sub-Order 2. ANGUILLIFOHME 

 Division 1 



DiviMon 2. Ntmckth, 

 3roup A. KncMutj'h. 

 Group B. Coloctpkah. 



\ 



Sub-Order 4. GASTEROSTEIFORMES. 

 Tribe 1. GattcrotUovin. 

 Tribe S. Hmibranchii, 

 Tribe 3. 

 Tribe 4. Hyyotlomula, 



Subdiviion 1. 

 Tribe &rya/or. 



DIAGRAM IV. PHYLOGENY OF THE TELEOSTEI. 



