182 MEMOIRS OF THE CARNEGIE MUSEUM. 
The general data for this subfamily are given in the table here given: 
Species of Sternopygine. | Specimens “Tajured. Per Cent. | Bember et 
1, MSLELNODYGUS MNLACTUGUS aptelaiclnicle erie | 214 | 20 10 | 27 
2. Sternopygus obtustrostris..........0.+00- None | 
3. Higenmannia macrops.............+-+-. 56 a 12 3 
4, Eigenmannia virescens.............+-+-| 482 72 15 | 63 
5. Eigenmannia troscheli........02...+22+0- 3 0 0 | 1 
GaySteatogenesieleqans=\-te siete eile eiieeiete 19 2 11 | 3 
CmLapopoimius Oneininostn Saee eeeeeeneeeee 56 4 8 19 
Shy ELUTE Hs ooo nosconyesboooosut 90 7 8 16 
9. Rhamphichthys rostratus............++45 8 2 25 4 
10. Gymnorhamphichthys hypostomus........ 11 1 9 7 
Sternarchine.—The presence of a small caudal fin is the main point of 
difference between the Sternarchine and the other three subfamilies. The fishes 
of this group are quite compressed. In the cephalic and pectoral regions the body 
is more or less suddenly tapered into a peduncle which bears the caudal fin. All 
the species, with the exception of Adontosternarchus sachsi (Peters), have teeth. 
Few specimens of this subfamily, in comparison with the Sternopyginew, were ex- 
amined, yet the general occurrence of regeneration throughout the group is evident 
from the following table. The several species will be considered separately. 
Species of Sternarchine. | pe a ae | Per Cent. a ‘sahaet 
| 
1. Sternarchorhynchus oxyrhynchus.......... | 9 1 10 a 4 
2. Sternarchorhamphus miillert...........4. | 5 3 60 | 2 
3. Sternarchorhamphus macrostomus......... None | 
A SLEPNANChUSIALOL|NONS ere eerestsietiter 9 0 0 4 
5. Sternarchus brasihensis............---.> 2 0 0 1 
6 Sternarchusivonapartinen crea eee eee 2 1 50 2 
7. Sternarchus leptorhynchus.............+. 3 0 0 1 
SaSLETNANCHULSHOSCILON pretest 13 13 100 1 
Om Sternanchella schotties same eeeeeie 5 5 100 1 
10:7 Sternarchella balenopss = 4-4-5208 eee None 
11. Sternarchogiton natterert............05-- None | 
Ze Rorotengus gyMmnolusseeee eee cee 4 1 25 2 
132 Poralergusgunbelu.: 2 oe pe a eee 4 | 0 0 1 
14. Adontosternarchus sachsi............+++- 57 | 5 9 2 
15. Orthosternarchus tamandua.............. None | 
The single individuals of Sternarchorhynchus oxyrhynchus (Miller and Troschel), 
and Porotergus gymnotus Ellis, and the five of Adontosternarchus sachsi (Peters) 
noted in the above table as regenerating were each repairing small injuries to the 
anal fin, rays and fin-membrane having been lost. None of these regenerations 
were completed. 
Two specimens of Sternarchorhamphus miilleri (Steindachner), from Para, 
Brazil, each about four hundred and thirty millimeters long, had lost the entire 
caudal peduncle and caudal fin, the line of injury running across the body through 
the end of the anal fin. Comparison with an uninjured specimen of the same 
