90 



PROCEEDINGS OF THE NATIONAL MUSEUM 



and 13-13 pectoral rays. Regan's figure (I.e. pi. 21, fig. 2), probably 

 of the type of hariii, also shows 13 pectoral rays. Another important 

 character is the presence of only 6 branched dorsal rays in hartii. 

 Among the material of Rivulus available from Venezuela I fail to find 

 specimens that consistently agree with hartii, although collections 

 made in British Guiana and Brazil appear to agree fairly weU with 

 my material from Trinidad, the type locality of hartii. 



RIVULUS HOLMIAE Eigentnann 



Rivulus holmiae Eigenmann, Ann. Carnegie Mus., vol. 6, p. 50, 1909 (Holnaia, 

 British Guiana). 



Rivulus hariii Myers, Copeia, 1924, No. 135, p. 96 (Margarita Island, Venezuela) ; 

 Stanford Ichthyol. Bull., vol. 1, No. 5, p. 171, 1940 (Margarita Island). — de 

 Beaufort, Freshwater fishes from the Leeward group, Venezuela and eastern 

 Colombia. Studies on the fauna of Curagao, Aruba, Bonaire, and the 

 Venezuelan islands, vol. 2, p. 110, 1940 (Margarita Island). 



U.S.N.M. No. 94150, 1 specimen, 71 mm. in standard length, El Valle, Isla de 

 Margarita, Austin H. Clark. 



U.M.M.Z. Collection 142, 75 specimens, 14 to 73 mm., Rio Porlamar at El 

 Valle, Isla de Margarita, F. F. Bond (lent by Dr. Carl L. Hubbs), AprU 1, 1939. 



Upon studying a series of specimens from El Valle, Isla de Mar- 

 garita, Venezuela, and comparing them with a paratype of Rivulus 



Table 12. — Measurements made on certain species o/ Rivulus expressed inhundredths 



of the standard length 



Characters 



hartii 



Caripito 

 N.Y.Z.S. 



No. 30239 



Trinidad 



U.S.N.M. 

 No. 94308 



holmiae 



Margarita 



Island 

 U.S.N.M. 

 No. 94150 



bondi 



Caripito 

 N.Y.Z.S. 



No. 30015 

 Paratype 



U.M.M.Z. 

 Holotype 



U.M.M.Z. 

 Paratype 



Standard length 



Length of head 



Greatest depth 



Length of snout 



Diameter of eye 



Postorbltal length of head 



Interorbital space. .- 



Length of caudal peduncle 



Least depth of caudal peduncle. 



Greatest width of head.. 



Snout to dorsal origin 



Snout to anal origin 



Snout to pectoral insertion 



Snout to pelvic insertion 



Length of longest dorsal ray 



Length of longest anal ray 



Length of longest pectoral ray... 



Length of longest pelvic ray 



Length of longest caudal ray 



Length of depressed dorsal fin.. 



Length of depressed anal fin 



Length of base of dorsal fin 



Length of base of anal fln 



31.5 

 27.0 

 20.0 

 6.35 

 8.26 

 14.0 

 12.7 

 21.3 

 13.3 



81.0 

 66.7 

 26.7 

 54.0 

 13.7 

 15.9 

 21.1 



9.52 

 27.0 

 20.3 

 31.8 



6.67 

 19.4 



36.0 

 27.8 

 22.8 



7.50 



9.44 

 12.8 

 13.9 

 20.0 

 14.4 

 18.1 

 77.8 

 61.4 

 26.7 

 51.4 

 16.7 

 16.7 

 17.8 



8.05 

 25.3 

 21.9 

 32.0 



8.33 

 20.3 



30.5 

 27.8 

 19.7 



8.20 



9.84 

 13.8 

 14.1 

 20.0 

 13.1 

 19.0 

 80.3 

 63.6 

 28.5 

 55.4 

 15.1 

 15.4 

 17.0 



9.18 

 25.6 

 21.0 

 28.8 



8.85 

 19.7 



71.0 

 26.2 

 22.5 

 8.04 

 7.04 

 12.7 

 14.1 

 19.7 

 15.5 

 20.3 

 72.5 

 57.0 

 26.8 

 48.0 

 14.4 

 15.1 

 18.3 

 10.6 

 23.2 

 24.7 

 30.6 

 12.4 

 25.9 



66.0 

 26.2 

 20.4 

 8.33 

 6.52 

 12.9 

 12.9 

 18.9 

 13.5 

 19.9 

 73.0 

 61.5 

 26.0 

 51.5 

 14.1 

 13.3 

 17.0 

 7.72 

 24.2 

 22.7 

 31.8 

 10.6 

 23.6 



40.2 

 29.2 

 19.9 

 8.70 

 7.96 

 14.2 

 11.2 

 16.2 

 12.9 

 19.7 

 77.4 

 6.3.4 

 29.6 

 51.2 

 16.7 

 15.2. 

 18.9 

 9.95 

 26.6 

 23.1 

 32.3 

 10.5 

 22.4 



50.5 

 27.1 

 19.6 

 8.32 

 7.92 

 13.1 

 12.5 

 16.4 

 12.9 

 17.8 

 77.2 

 61.0 

 27.7 

 51.5 

 17.2 

 17.2 

 17.6 

 10.3 

 25.0 

 24.2 

 36.6 

 10.5 

 23.7 



