I 
FISHES FROM THE RIVERS OF MEXICO. 
147 
Color in alcohol, light slate; scales with lighter central spots; posterior parts of dorsal, anal, and 
candal lighter; head in life covered with ronnd and elongate spots of greeuish-hlue on a golden- 
brown background; sides of body with bluish and brownish spots irregularly arranged ; pectorals 
and distal part of soft dorsal with yellowish tinge. In the young there are 5 or 6 dark vertical bands, 
about equal in width to diameter of orbit, on posterior part of body ; a dark spot is sometimes preseut 
just below lateral line on a vertical through base of eleventh dorsal spine. 
Neetroplus carpintis differs from N. nematopus and JS T . nicaraguensis in having a much deeper body 
and fewer dorsal and anal spines : 
Species. 
Dorsal. 
Anal. 
. 
Lateral 
line. 
Neetroplus carpintis 
XV-XVII, 8-11 
v, 8 
24-29 
i e n atop us 
XIX, 10 
VIII, 7 
34 
XVIII. 11 
VII, 7 
Besides the specimens taken in the Rio Tamesoe, a number of very small individuals of N. car - 
pintis were collected in the Rio Verde near Rascon. They have rather indistinct, dark vertical bands 
on the entire length of the body, and in most cases a series of dark spots along the sides of the body; 
one at the base of the caudal and another under the eleventh dorsal spine being always present and 
the most distinct. 
Measurements of ten specimens of Neetroplus carpintis. 
Measurements. 
Locality 
: La 
Tuna del Carpinte, near Tampico, 
Tamaulipas, Mexico. 
Length of body in millimeters 
162 
161 
132 
129 
119 
66 
55 
57 
54 
49 
Depth of body expressed in hundredths of 
length 
51 
55 
55 
54 
55 
49 
49 
50 
49 
51 
Deptli of candal peduncle 
17 
17 
17 
16^ 
17 
15 
16 
164 
16 
17 
Length of head 
34 
36 
37 
35 
354 
38 
38 
40 
38 
39 
Width of interorbital space . . 
12 
13 
13 
13 
124 
lOf, 
10 
11 
11 
10 
Length of snout 
16 
17 
m 
17 
16 
15 
15 
16 
15 
15 
Diameter of orbit 
7 
7 
8 
u 
8 
9 
10 
10 
10 
11 
Distance from snout to dorsal tin 
42 
43 
46 
43 
45 
44 
45 
46 
46 
45 
Height of longest dorsal spine 
17 
16 
18 
18 
18 
16 
15 
17 
17 
16 
Height of longest dorsal ray 
31 
31 
30 
28 
30 
23 
25 
26 
25 
27 
Distance from snout to anal fin 
73 
75 
72 
75 
71 
70 
72 
72 
70 
70 
Height of longest anal spine 
164 
164 
19 
18 
18 
18 
19 
19 
16 
18 
Height of longest aDal ray 
27 
29 
28 
284 
31 
26 
27 
■24 
25 
26 
Distance from anal to caudal iin 
15 
14 
14 
141 
15 
15 
15 
14 
15 
15 
Length of caudal fin 
30 
33 
31 
30 
33 
30 
33 
29 
32 
33 
Length of pectoral tin 
26 
27 
28 
264 
28 
28 
28 
30 
29 
29 
Distance from snout to ventral fin 
44 
45 
45 
45 
43 
44 
46 
46 
45 
45 
Length of ventral fin 
304 
30 
32 
30 
32 
29 
30 
30 
31 
29 
Number of dorsal spines. - 
16 
16 
16 
16 
16 
16 
16 
17 
15 
16 
Number of dorsal rays 
10 
8 
11 
10 
10 
10 
10 
8 
n 
10 
Number of anal spines 
5 
5 
5 
5 
5 
5 
5 
6 
5 
5 
8 
8 
8 
8 
8 
8 
8 
7 
8 
8 
Number of scales in lateral line 
26 
27 
26 
26 
29 
27 
24 
27 
25 
26 
N umber of scales In transverse series 
17 
18 
16 
17 
16 
16 
17 
16 
16 
16 
GOBIIDiE. 
41. Philypnus dormitor (Lacdpfede). Lagoons near Tampico. 
42. Awaous taiasica (Lichtenstein). Rio Ixtla, Puente de Ixtla. 
