1906. 



NATURAL SCIENCES OF PHILADELPHIA. 



323 



origin of dorsal to lateral line; 4 scales obliquely up from origin of 

 ventral to lateral line; 4 scales from origin of anal obliquely up to 

 lateral line; 13 scales before dorsal; pectoral If in head; ventral 1|; 

 snout 3 in head, from tip of upper jaw; eye 3; interorbital space 2^. 

 Rakers none. Length 4^ inches (caudal damaged). Two examples. 



The median dusky longitudinal band extends from the snout to the 

 caudal. Kner's figure does not indicate it on the side of the snout or 

 on the postocular region. 



PCECILOSOMATOPS subgen. nov. 

 Type Characidium etheostoma Cope. 

 Scales smaller transversely, about 4 from opposite origin of anal in an 

 oblique series forward to lateral line. 



(/7oja:£Ao9^ variegated; ^rai^a, body; f^^'', appearance. Poecilosoma was 

 an old name employed by Agassiz for certain Etheostomatincv , to which 

 these fishes bear a certain resemblance.) 



km 



Fig. 17. — Characidium etheostunia Copi- 



Characidium etheostoma Cope. Fig. 17. 



Proc. Acad. Nat. Sci. Phila., 1871 (1872), p. 259, PI. 13, fio;. 3. No. 8,152 

 (t}-pe) and 8,153, A. N. S. P., cotj-pes. Ambyiacu River, Equador. 

 John Hauxwell. 



Scales 11 before dorsal; width of head about 2^ in its length; inter- 

 orbital space 3 J. Body well compressed. Muzzle compressed. 

 Snout rather narrow. Lips thin. Teeth in jaws uniserial, even and 

 fine, none on maxillaries. Interorbital space convex. Gill-opening 



