No. 492] FOWLER'S " HETEROGNATHOUS FISHES" 769 



But Anostomiis was proposed by Gronovius and accepted by 

 Scopoli in his Introductio ad Historiam Naturalem, 1777, p. 451. 

 There is no reason for doing away with the name Anostomus even 

 if it were identical with Anastomus, which it is not. 



10. • — Poecilosomatops is proposed for the species of Characi- 

 dium having 4 scales between the anal and the lateral line; the 

 rest have 2 or 3. The advisibility of this division may well be 

 questioned, but even if valid, the older name, Nanognathus 

 Boulenger, must be used instead of Poecilosomatops. 



11. — Garmanina is a valid subgenus of Rhytiodns, there 

 being a difference of 30 scales in the lateral line. 



12. — Abramites (type hypselonotus) , a new genus, is said to 

 be distinguished from Leporinus by its longer anal basis, but 

 where are we to draw the line? There are groups of species of 

 Leporinus with 9, 10, 10 or 11 , 1 1 , 12, 12 or 13, 13 to 15 {hypselo- 

 notus), 14, and 15 or 10 rays! The name is not admissible. 



yislyanax fcdiuaivs ((\)])e) redescribed and figured, is the 

 type of a gcuis di^tiiut from Astyanax, differing from all other 

 Tetrag()iiopt(>niKu> in that the origin of the anal is under or in 

 advance of that of the dorsal. It may be nauK-d Ph(>tui('ogaster.' 

 Astyana.r i/mntn i iJoulcuuci i i> the U \>v of a di-tiiK t nu^ \\hich 



seem to be divine t from MoniUunis/a af/a.s'^i-n , muc e the dill'erences 

 fall within the liniiis of the ol.served variation of the latter. His 

 Astyanax ol/f/olrpis- is \-eiy pn>l)al)ly Ash/anax sicindachneri 



gonopfeni.s- oralis is {)rol)al>ly a .Moeiikhausia. 



13. — (\)s(.inovn>n i^ prol)al)l\ a xalid genus, differing from 

 Chalcinus in the incr(^as(>,l nnmlxM- of gill-rakers. 



