144 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



spine not reaching quite to tip of third dorsal spine. From D. 

 peruvianus of the Pacific with which this new species is most closely 

 related, it differs by having 15 gill rakers instead of 12 or 13. 



Named limnaeus (meaning "lake") in reference to its occurrence in 

 Lake Maracaibo. 



DIAPTERUS RHOMBEUS (Cnvier) 



La Carpeta 

 Gerres rhombeus Cuvier, La r^gne animal, vol. 2, ed. 2, p. 188, 1829, 



U.S.N.M. No. 121710, 5 specimens, 56.5 to 83 mm. in standard length, from 

 Lago de Maracaibo at Yacht Club, Maracaibo, May 16, 1942. 



U.S.N.M. No. 121713, 2 specimens, one 67 mm., the other only anterior part of 

 body and head, Lago de Maracaibo, 1 km. off Pueblo Viejo in gill net, April 7-9, 

 1942. 



U.S.N.M. No. 121712, 5 specimens, 35 to 59 mm., Lago de Maracaibo at Yacht 

 Club, Maracaibo, February 27, 1942. 



U.S.N.M. No. 121711, 3 specimens, 43 to 64 mm., mouth of Cano de Sagua, 

 25 km. north of Sinamaica, March 12, 1942. 



U.S.N.M. No. 121708, 29 specimens, 36 to 62 mm., Lago de Maracaibo at 

 Yacht Club, Maracaibo, March 5, 1942. 



U.S.N.M. No. 121714, 12 specimens, 28 to 43 mm., Sahna Rica, 5 km. north of 

 Maracaibo, February 20, 1942, 



U.S.N.M. No. 121709, 1 specimen, 20 mm., cano at Los Monitos, Rfo Lim6n 

 system, March 11, 1942. 



U.S.N.M. No. 121949, 1 specimen, 36 mm.. Point Macolla, U, S. S. Niagara, 

 April 19, 1925. 



U.S.N.M. No. 121948, 6 specimens, 35 to 39 mm., Amuay Bay, U. S. S. Niagara, 

 December 9, 1924. 



1 specimen, 25 mm., bajo seco east side of Puerto Cabello, F, F, Bond, January 

 26, 1938. 



3 specimens, 40 to 42 mm., Laguna del PJo Capatdrida at mouth, 5 km. north 

 of Capatdrida, F. F. Bond, March 21, 1938. 



1 specimen, 22 mm., Laguna de Tacarigua, Estado de Miranda, F. F. Bond, 

 February 3, 1939. 



DIAPTERUS EVERMANNI Meek and Hildebrand 



Diapterus evermanni Meek and Hilderrand, The marine fishes of Panama, 

 pt. 2, p. 594, pi. 63, 1925 (Mindi River, near Mindi; Fox Bay, Colon, Panama). 



3 specimens, 40 to 44.5 mm., Laguna del Rfo Capatdrida at mouth, 5 km. 

 north of Capatdrida, F. F. Bond, March 21, 1938. 



3 specimens, 47 to 53.5 mm., Laguna de Tacarigua, Estado de Miranda, F. F. 

 Bond, February 3, 1939. 



2 specimens, 54 and 55. 5 mm., salt-water lagoon on coast, 5 km. west of Cumand, 

 F. F. Bond, March 25, 1939. 



The three collections listed above contain eight specimens in which 

 the anal rays are II, i, 8. The type and paratype of evermanni, 

 U.S.N.M. Nos. 81738 and 81322, have II,i,8 rays, the third ray 

 simple and with its tip cross striated, indicating that this is a soft 

 ray but unbranched. This species is the counterpart of the four 



