740 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxhi. 



The depth of the body is measured at its deepest part; depth of caudal 

 peduncle at its narrowest place; length of caudal peduncle from base 

 of last anal ray to end of last vertebra; length of head from tip of 

 snout to posterior edge of opercle; length of snout from its tip to 

 anterior margin of orbit; width of interorbital space measured on the 

 skull, the dividers compressed tightly between the eyes; diameter of 

 orl)it, lonpfitudinallv; length of caudal tin from end of last vertebra 

 to tip of longest rays. Only fully developed fin rays are counted. 

 The rudimentary raj^s of dorsal and anal, when closely adnate to the 

 first l>ranched ray, are counted with it as one ray. When the soft 

 dorsal contains a spine it is enumerated as a ray; when last ray of dor- 

 sal or anal is double it is counted as one. Scales in the lateral series 

 are counted to l)ase of caudal fin; transverse series from insertion of 

 ventrals or anal, whichever is nearer middle of body, upward and for- 

 ward; above or below lateral line, as indicated in the description. 



The new species descril)ed are the following: 



Leucismis jouyl^ Sasuna, Tsushima. 



Apog(jn u)iicolot\ near Yokohama. 



Pomacentrus rathhuni^ near Yokohama. 



Ahorna UusJmme, Tsushima (Sasuna). 



Chasinim ndsakiuf , Misaki, Sasuna, in Tsushima. 

 Watmea sivicola, Misaki; Nanaura in Awa. 



In addition to these, four new names are given in place of names 

 alread}^ used in the same genus. These are Llmauda herzeimtetnl, 

 Chd't'ops azurlo^ PygoHteua delndacJincrl., Cohitis hiwm. 



Two genera, Watatsea and OhasntlaN, are described as new. 



Family SQUATINID.E. 



I. SQUATINA JAPONICA Bleeker. 



591. Yokohama. 



Conuuon throughout southern Japan. It has never been carefully 

 compared with S/juathia i<qiiatuia nor with Sqaathia callfornlca^ and 

 may not be distinct. 



Family NARCOBATID^. 



2. ASTRAPE JAPONICA (Schlegel). 



626. Yokohama. 



Rather rare. It has never been critically compared with the East 

 Indian Astrajjc dipteryglii (MiiUer and Henle) and may he the same, as 

 supposed l)y Dr. Giinther. 



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