508 BATRACHIA APODA. 
examine the position of the eye when he received the latter at a somewhat later 
period. 
GYMNOPIS. 
Gymnopis, Peters, MB. Akad. Wiss. Berlin, 1874, p. 216; 1879, p. 938; Bouleng. P. Z.S. 
1895, p. 409. 
Eyes hidden below the bones; tentacle globular, in a circular pit, nearer the 
commissure of the jaws than to the nostril. Rudimentary scales imbedded in the 
skin. Mandibulary teeth in two series. 
1. Gymnopis multiplicata. 
Gymnopis multiplicata, Peters, MB. Akad. Wiss. Berlin, 1874, p. 616, t. 1. fig. 1; 1879, p. 939, 
fig. 7; Bouleng. P. Z. S. 1895, p. 410. 
Siphonops simus, Cope, Proc. Am. Phil. Soc. xvii. p. 91 (1877). 
Gymnopis sima, Cope, Proc. Am. Phil. Soc. xxii. p. 171 (1885). 
Hab. Costa Rica, Cariblanco (Underwood & Biolley); Panama, Veragua.—Co.omsia, 
Antioquia. 
Head moderate, the circumference of the body being one-ninth of its length ; snout 
rounded, prominent. 228-250 circular folds, of which the (about) 20 anterior and 
30. posterior are complete, the intermediate being alternately complete and interrupted 
on the abdomen. Plumbeous, lighter below. 
Totallength . . 2. 2... . ee ee . 450 millim. 
Circumference of body. . . . . . . . . . . 50 
39 
2. Gymnopis proxima. 
Siphonops mexicanus, Cope, Journ. Ac. Nat. Sc. Philad. vii. p. 96 (1875). 
Siphonops proximus, Cope, Proc. Am. Phil. Soc. xvii. p. 90 (1877). 
Gymnopis proxima, Cope, l.c. p. 171 (1885). 
Hab. Costa Rica, eastern coast (abd). 
Habit moderate, the.circumference of the body being about one-eighth of its length ; 
snout flattened, narrow, produced; (tentacular fossa close to eye*); 129 complete 
annuli. Plumbeous, paler below. (After Cope.) 
Totallength . . 2. 2... we ee. 425 millim. 
Diameter of body . . . . 1 2. ww ee ee Cd 
3) 
* This expression, used by Cope before he was acquainted with the real position of the eye, must now 
appear inappropriate. What Cope took for an eye is the tentacular canal, which is apparent through the 
skin as a whitish patch (well shown by Peters in fig. 7 of his paper of the year 1879), and which occupies a 
position in which one would expect the eye to be placed. Peters himself was mistaken as to the nature 
and position of the eye when he established the genus Grymmnopis in 1874. 
