I 
new goMoid fishes secured on the Presidential amis® of 1938.^ 
1 
Puhlished by peraiseion of the U. S. OfflBMsissioner of Fisheries. 
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Isaac dinshurg 
w m w <w i wi «u» 
Tsw TOxy interesting species of fishes, an eleotrld and a goMid, 
which proved to he unkaowa to science were collected during the Presidential 
cruise, on Old Providence Island, loth diverge from the known species in 
their respective genera to a remarkable extent, auad present features that 
should prove to be of value in interpreting ti® phyllogenetio relationship of 
some species in this difilexilt and interesting assemblage of related species, 
lumerioal values of measuremmts stated in this paper refer to per- 
centages in standard length, fhe given length of a specimen repres^ts the 
total length, ineludlag the caudal fin, unless otherwise stated. 
Pyonemma roosevelti new species 
Descri ntlon . ora elon^te, body compressed, head conspicuously 
depressed, aaout blunt, ©specially when viewed from dorsal aspect. Mouth 
moderately oblique, terminal j a horizontal through distal margin of upper 
lip approximately bisecting eyej lower Jaw slightly psrojecting. Maxillary 
medium, its posterior end approximately under middle of ej^, Intenirbital 
narrow. Tongue free, broad, with a nearly straight edge in front, only very 
slightly emarglnate. Teeth in three rows, those in outer and inner rows en- 
larged; in upper Jaw teeth in outer row strongly maarged, extending nearly 
to angle of mouth, inner teeth modemtely walarged near symphysis only; in 
lower Jaw outer enlarged teeth of about same else as outer teeth of upper 
Jaw, nearly confined to front, not extending far on side, inner row extending 
