PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 547 



Mngil brasiliensis. 



The identification of Mugil brasiliensis Agassiz with Mugil trichodon, 

 made by us on page 270, ia probably too hasty. 



The type of ilf. brasiliensis, as described by Dr. Spangenberg, must be 

 either M. liza or M. trichodon. It is, however, on the whole more likely 

 to have been the former than the latter. 



Haemulon canua and schranki. 



1 have received from Dr. Spaugenberg, of the Museum of Munich, the 

 following notes on the types of Hcemulon canna Agassiz and Hcemulon 

 schranici Agassiz : 



" We possess one example of Hcemulon canna 24.5 centimeters long 

 from snout to base of caudal. Of Hcemulon schranici we have a bottle 

 with four specimens, although by Spix and Martius only two are men- 

 tioned. Two of these agree closely with their diagnosis ; the others have 

 probably been placed in the same bottle by some one's carelessness, and 

 are not original types. Those which I regard as types are 13 and 13.6 

 centimeters long to base of caudal. It is difficult to separate the two 

 species by certain marks. They are best distinguished by the scaling 

 on the caudal, pectoral, and ventrals, and by the length of the gape. 

 All the other differences perhaps may disappear with age. 



Caona. 



Length in centimeters to base of candal 24. 5 



Leu{;th (if head (handredtlis of leuslh) .31f 



Height of head at occiput (hundredths of length) 28 



Greatest depth at occiput .36 



First anal spine in second 41 limes. 



Schranki. 



13 

 .36 

 .30 

 .37 

 3} times. 



" In H. canna the gape extends little beyond the first third of the 

 length of the orbit. In H. schranici it extends to beyond the end of the 

 second third. 



" In H. canna the space between the eyes is convex in both direc- 

 tions. In H. schranici the interorbital area is concave. 



" In H. canna all the fins are covered with fine scales ; the pectorals, 

 the ventrals, the caudal nearly to the tips, both on the rays and the in- 

 terspaces. In H. schranici the fins are scaly, except the pectorals, ven- 

 trals (only on the base); somewhat farther up on the rays are little 

 scales, none on the interspaces ; caudal scaled only at base. 



" In H. canna the pectorals are broad, somewhat triangular. In H. 

 schranici they are slenderer and longer. 



" The nostrils are not correctly described by Spix and Martius. 



" In H. schranki is the dorsal profile rather uniformly convex. In H. 

 canna the depressed profile of the head breaks the almost straight line 

 of the first dorsal. A rather sharp angle is made under the soft dorsal. 



"The coloration in both is totally lost." 



I am still unable to positively identify either of these species. 



