204 MR, C. TATE REGAN ON THE 
8. 28-380 scutes in a longitudinal series ; caudal peduncle 3}-5 times 
as long as deep. 
Scutes mostly carinate ; length of base of dorsal greater than 
its distance from adipose fin 
we 
- : . P. commersonii C. & V. 
Only the anterior scutes carinate; length of aa of Jord 
equal to (young) or less than (adult) its distance from 
adipose fin ; . 2 . .o Paipunctatuei Cre y.. 
y. 32-834 scutes in a longitudinal series. 
Caudal peduncle 7 times as long as deep . 
Caudal peduncle 11 times as long as deep 
= 
. P. spinosissimus Star. 
. P. feste Bigr. 
2. Supraoccipital bordered posteriorly by a median scute and by one or more on each 
side; first dorsal ray about as long as the head. 
or 
a. Caudal peduncle normally formed, the scutes of the fourth series not strougly angulated. 
26-28 scutes in a longitudinal series, the upper and anterior 
Caninate ns, jemi iiee stats p< SS Re tye dO. pernesiC aecave 
30 scutes in a ioupikaainal series, all carinate . . . . . . 7. P. carinatus Stdr. 
27-28 scutes in a longitudinal series, none of them carinate . 8. P. vaillanti Stdr. 
8. Caudal peduncle broad and flat below, the scutes of the fourth series strongly angulated. 
28-30 scutes in a longitudinal series . . . . . . . . =~. Q. P. emarginatus C. & V. 
3. Supraoccipital entirely bordered posteriorly by a single 
scute ; first dorsal ray as long as the distance from the 
tip of snout to its base; scutes not carinate, 27-28 in a 
longitudinal series. . | . . s . » - « « « » 40/2. Glatus Casteln. 
B. Length of mandibular ramus 14-2} times in the interorbital width. 
1. Some of the scutes carinate, the keels sometimes very weak. 
a. Depth of body 63-8 times in the total length. 
Depth of head 2} times in its length; 30 scutes in a longitudinal 
Series’. 1. Sage as ein Sw cue De Sea AP cordoba esan: 
Depth of head 13 times in its lange 28 scutes in a longitudinal 
BETICS ses sc) ie) BAEC te Stns ic) oy Suey > sooo OOTCLI te Epes 
8. Depth of body 4-5 times in the total length; 25-27 
scutes in a longitudinal series; diameter of eye 53-7 
times in the length of head. 
Virst dorsal ray not reaching adipose fin when laid back ; barbel as : 
eee : . 13. P. latirostris Regn. 
long as } the diameter of eye, or less . 
First dorsal ray reaching adipose fin when laid back ; Karhal as jo 
as diameter ofeye . . . 2 2 255 Wow» © =< «yeoman isIE. 
y. Depth of body 4-5 times in the total length ; 
27-28 scutes in a longitudinal series ; diameter of eye 
10 times in the length of head (in a specimen of 
Q0Simm:)':.;". 5, .. . a aeeeee mente ~ sell? PL robins 'C.-8 WV. 
2. None of the scutes carinate. 
a. Supraorbital edges strongly raised; eye large. . . . 15. P. macrops Eigmn. 
