58 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1335. 



tiou cxHiens, rondeleti and vinciguerrcv. We have left for consideration 

 only the i^reseut species and rujipinnis, and of these, Artedi's species 

 seems much more likely to have been the former than the latter. 



The spemliger of Cnv, & Val. and the affinis of Giinther we identify 

 with the present species on the strength of Dr. Liitken's statement that 

 on comparison of specimens, he tinds it impossible to separate them. 

 The scantily described roberti* of Miiller & Troschel seems also to be 

 the same. It is a species with long anal and white markings on the 

 pectorals. Presumably it has pale ventrals also, as it is compared by 

 its describers with E. cyanopterus, and no difference in this regard is 

 indicated. 



The U. noveboracensis of Cuv. & Val. is also apparently the present 

 species, but of this we cannot be quite certain. 



Specimens of this species from points oft' our Isorth Atlantic coast 

 are in the National Museum. In the Museum of the Academy is a 

 specimen llj inches long, collected by Isaac Tyson in the Atlantic. 



8. ExoccEtus rufipinnis. 



1 Exoemtus exiUens, Jeuyiis, Zool. Voy. Beagle, Fishes, 1842, 122 (uot of 



Gmelin). 

 Exoccetus rufiinnnis, Cuvier «fe Valeucienues, Hist. Nat. Poiss., 1846,99 (Payta, 



Peru) ; Giinther, vi, 1866, 294 (copied) ; Jordan, Proc. Ac. Nat. Sci. Phila., 



1884, 283 (redescription of original type). 

 Exocoetus dowi, Gill, Proc. Ac. Nat. Sci. Phila., 1863, 167 (near Panama). 

 Exoccetus sci/lla, Cope, Traus.Aui. Phil. Soc. Phila., 1871,481 (Tohasco, Mexico). 

 Exocalus robcrii, Liifcken, Vidensk. Meddel. Naturh. Foreuing, 1876, 12, 110 



(Barbadoes ; not of Miiller & Troschel). 



Habitat. — Tropical America. 



The Exoccetus scylla of Cope belongs apparently to a species diflerent 

 from E. voUtans, and distinguished among other characters by the color 

 of the pectorals. 



The Exoccetus rujipinnis of Cuv. & Val., too briefly redescribed by 

 Professor Jordan, does not differ from E. scylla in any important re- 

 spect so far as the description goes. The same is true of Exoccetus dowi, 

 which is certainly identical with E. rujipinnis. The type of E. dowi is 

 lost, but a specimen from Panama is in the Academy of Sciences at San 

 Francisco. While it is possible that these few specimens may repre- 

 sent more than one species, it is probable that scylla^ rujipinnis, and 

 dowi are the same. The specimen from Barbadoes, called roberti by 

 Liitken, distinguished from E. speculiger by the uniformly colored pec- 

 torals, probably belongs to E. rujipinnis. 



The following description is taken from the original type of Exocoetus 

 scylla: 



* The description of MUller & Troschel is very short. The following is the .sub- 

 stance of it: "D. 11, A. 12; this species resembles E. vyanopferus Cuv. & Val., but 

 it differs in the dorsal fin, which is much lower and of one color; the pectorals are 

 diaphanous and dark colored, and on the inner part near the base is a Inrge white 

 spot." It is recorded by them as being very abundant about the Barbadoes. 



