Siig: PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 - 
Paratypes.—All the paratypes were collected by Leonard P. Schultz 
during 1942 in the Maracaibo Basin of Venezuela: 
U.S.N.M. No. 121525, 23 specimens, 24 to 27 mm. in standard length, collected 
along with the holotype and bearing same data. 
U.S.N.M. No. 121522, 24 specimens, 18 to 29 mm., Ciénaga del Guanavana 
about 10 km. north of Sinamaica, March 11. 
U.S.N.M. No. 121528, 108 examples, 18 to 26 mm., Rfo Negro below mouth 
of Rfo Yasa, March 2. p 
U.S.N.M. No. 121524, 3 examples, 23.5 to 28.5 mm., cafio % km. west of 
Sinamaica, March 11. 
U.S.N.M. No. 121527, 4 specimens, 19.5 to 24 mm., Rfo Apén about 35 km. 
south of Rosario, February 26. 
U.S.N.M. No. 121529, 9 specimens, 21 to 26 mm., Rio Palmar at bridge, 70 km. 
soutwest of Maracaibo, March 6. 
U.S.N.M. No. 121521, 44 specimens, 17 to 28 mm., Rio Socuy, 3 km. above 
mouth, February 24. 
U.S.N.M. No. 121526, 7 examples, 16.5 to 21 mm., Rfo Machango at bridge 
south of Lagunillas, March 16. 
U.S,N.M. No. 121580, 4 examples, 25 to 26 mm., Rfo Palmar near Totuma, 
about 100 km. southwest of Maracaibo, February 21. 
U.S.N.M. No. 121520, 5 examples, 22.5 to 25 mm., Rfo San Pedro at bridge 
south of Mene Grande, March 20. 
U.S.N.M. No. 121523, 3 specimens, 19 to 25 mm., Lago Tulé about 75 km. west 
of Maracaibo, March 1. 
This species reaches a length of 29 mm. and at this size and at smaller 
sizes numerous specimens were fully mature. It occurs in the lower 
courses of the streams in quiet waters and in swampy areas. 
TABLE 19.—Counts made on species of Saccoderma 
Number of fin rays Number of scales 
Above| Below 
Species Por 7 Anal Pectoral Pelvic Rowson lateral] lateral 
mi line line 
——————— | SS ) | | 
li, 9 jiii, writ, 18}iii, 19) i, 10) i,11]i,12]i,13] i, 7 | 33 | 34 | 35 5 3 | 4 
_—_—- | SS | ————_ — ———— ———_ | | | |) | | | | | | 
melanostigma__..------ 12 5 10 5 4 8 1 1 By iE Tb Bal Onlaee 2 
SV ILCLSEOLE CL sia tees ae et oe aS SN 2 a Rit) Reece 1 2 OF fist Pek Yi Baas) barat Bi RG 2 1 1 
Description.—The description is based on the holotype and paratypes 
listed above. Detailed measurements were made in the former and 
one of the latter and these data, expressed in hundredths of the stand- 
ard length, are recorded below, first for the holotype and then the para- 
type in parentheses. Standard length in millimeters 27 (28). 
Length of head 27.8 (28.3); greatest depth 33.3 (30.7); length of 
snout 6.66 (6.30); diameter of eye 10.0 (11.1); distance from tip of 
snout to rear edge of maxillary 8.15 (9.63); width of interorbital space 
8.15 (8.15); postorbital length of head 11.9 (12.6); least depth of 
