PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 489 



Nogagus curticaudis, (Daua) Brady. 



Report on the scientific results of the voyage of H. M. S. Challeuger, vol. viii, 

 part xxiii, report on the Copepoda, p. 135, 1883. 



From the Dusky Shark, Carcharimis obseurus, (Lesueur) Jor. & Gilb. : 



C033. Station 1142, latitude 39° 32' N., longitude 72° W., surface, U. 8. Fish 

 Commission, September 8, 1882 ; 9 ^ specimens. 



The above specimens were identified by comi>arisou with a specimen 

 of Nogagus curticaudis (6917), kindly furnished by Prof. G. S. Brady, of 

 England, and obtained by H. M. S. Challenger, on Carcharias brachy- 

 itrus, between Papua and Japan. I can distinguish only slight difler- 

 ences between them, which could not be regarded as of specific value. 

 Our specimens were associated with Nogagus LatreiUli and Pandarus 

 Cranchii on the same fish. 



Nogagus Latreillii, Leach. 



Diet, des Sci. Nat., tome xiv, p. 536, 1819, (teste Edwards et al.) 



From the Dusky Shark, Garcharinus obseurus, (Lesueur) Jor. & Gilb. : 



6031. station 1142, latitude 39° 32' N., longitude 72° W., surface, U. S. Fish 

 Commission, Septembers, 1882; 1 $ specimen. 



From large Shark, species not determined : 



8640. Station 2237, latitude 39° 12' 17" N., longitude 72° 09' 30" W., surface, 

 U. S. Fish Commission, steamer Albatross, September 13, 1884 ; 6 $ speci- 

 mens. (Associated with Pandarus Cranchii, No. 8641.) 



In addition to the above, there are in the iis^ational Museum collection 

 many other specimens of a Nogagus, of smaller size, obtained from 

 several species of sharks, which belong to a closely related, if not the 

 same, species. I have omitted them from the list until they can be com- 

 pared with European specimens. One lot of these, from Atwood's 

 shark {Carcharodon Aticoodi) were recorded by Prof. S. I. Smith, in the 

 Report of the U. S. Fish Commissioner, Part I, p. 576, as Nogagus 

 Latreillii, and in the same connection that author mentions the princi- 

 pal differences from the published figures and descriptions, which I 

 have also observed. 



Cecrops Latreillii, Leach. 



Encyl. Brit., Snppl., vol. i, p. 405, \A. 20, 1816, (teste M. Edwai-ds e< al.); 

 Gould, Kept. Invert. Mass., j). 341, 1841 ; Smith, op. cit., part i, p. 577 (283), 

 1873. 



From the Sunfish, Mola rotunda, Cuv. : 



6017. Off Gay Head, Massachusetts, U. S. Fish Commission, July 12, 1881; 

 2(? 9 specimens. (Gill laminae.) 



Leemargus muricatus, Kriiyer. 



Naturhistorisk Tidsskrift, bind i, p. 487, pi. 5, fig. A, B, C, D., 1837. 



Host unknown. 



3693. Jeffrey's Bank, Gulf of Maine, fishing schooner Paul Revere ; 2 9 speci- 

 mens. (Gloucester Donation No. 926.) 



