70 PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXVI. 



The length of the second dorsal spine is variable, reaching only t( 

 the base of the rudimentary caudal rays in some examples, to abovi 

 the middle of the longest caudal rays in the others; its insertion ii^ 

 midway between the base of the middle caudal rays and a point mid- 

 way between the eye and the edge of the opercle. The pectorals equal 

 in length the base of the anal, or the eye and postorbital part of the 



head. 



Color in spirits silvery below, brownish above; tins colorless; ])ale 



red in life. 



We have compared this species with two specimens of MacrorUam- 

 phmm f<cdop<i.>' from the Canary Islands. From them it differs in 

 being a little more slender, and in having a slightly smaller eye and 



longer snout. 



Specimens from Misaki and Enoura on Sagami Bay and from deeper 

 water at Sagami and Saruga Bays, where it was dredged by the U. S. 

 Fish Commission steamer Alhatr<m. The type from Enoura is num- 

 bered T125 in Leland Stanford, Junior, University Museum. A co-type 

 is in the U. S. National Museum. The species is common in rather 

 deep waters along the coast of Japan. 



{mglfue^ the Japanese name.) 



9. MACRORHAMPHOSUS JAPONICUS Giinther. 

 Centriscus japonlms m^TR^ii, Cat. Fish., Ill, 1861, p. 522; Japan; China. 



Dorsal IV or V-11; anal 18 or 19. 



The height of the body is contained 2| to 3 times in distance of 

 operculunt from base of caudal. Second dorsal spine very strong, 

 not (or very indistinctly) denticulated posteriorW, the U^igth alwut 

 one-fourth or two-ninths of the distance of the opercle from the 1 



caudal. 



The above is Dr. Giinther's description of Macrorhamplioms gracihx 

 of Europe From this species he differentiates M. japonims in ha\- 

 ing a shorter dorsal spine. 



The species was not seen by Jordan and Snyder. The type of Dr. 

 Giinther was doijjj^less from Misaki. 



Family VI. CENTRISCID^.. 



Form of body elongate, iiuich compressed. Anterior bones of skull 

 much produced and forming a long tube terminating in a small 

 mouth. Body covered with a bony dorsal cuirass which is connate 

 with the internal skeleton. Posteriorly it terminates in a long spine 

 with or without a movable spine at its end. The longitudinal axis oJ 

 the tail is deflected from that of the truidc l)y the encroachment o\ 

 the dorsal cuirass over it. Vertical ffns including a spinous dorsai, 

 crowded together under the terminal spine of dorsal cuirass. VentraL 



