. 0)1 the Fishe.t of the Family ^Eacrorliamiiliosidpe. 17 



Xyatreurys brasiliensis, sp. n. 



D. S3. A. CG. Scales 85. Depth 2| in length. Eye 3 

 in head. 



Total length 170 mm. 

 ('ape Frio, 10 fathoms. 



III. — .1 Synopsis of the Fishen of the Family 

 MacrorhaniphosidaB. By C. Tate Regan, M.A. 



(Published by permission of the Trustees of the British Museum.) 



Synopsis of the Genera and Species. 



I. First dorsal spine quite short. 



A. On each side of tlie back two series of bony plates, in each serie3 

 3 well-developed and a fourth, much smaller than the others. 



1. Dorsal fins separated by an interspace, or connected by a 

 series of short isolated spines ; distance from base of dorsal 

 spine to vent not or but little more than h that from head 

 to caudal fin. [Macrorhamphosus.) 



a. Diameter of eye not less than postorbital length of head. 



Depth of body 31 to 4^ in length; dorsal spine 

 inserted above origin or anterior part of anal, 

 strong, serrated, f to § of distance from oper- 

 culum to caudal scolopax. 



Depth of body 3 to 3^ in length ; dorsal spine 

 inserted above vent, strong, serrated, -^- to | of 

 distance from operculum to caudal elevntus. 



Depth of body 4 to 4j in length; dorsal spine in- 

 serted a little in advance of ven"t, strong, ser- 

 rated, when laid back reaching caudal fin ... . sagifue. 



Depth of body 4^ to G| in length ; dorsal spine in- 

 serted ill advance of vent, serrated or not, \ to 

 f distance from head to caudal fin, when laid 

 back nearly or quite reaching origin, or some- 

 times posterior end of soft dorsal gracilis. 



Depth of body 4^ to 5 in length ; dorsal spine in- 

 serted in advance of vent, smooth or feebly 

 serrated, j^j to ^ of distance from operculum 

 to caudal fin, when laid back not reaching soft 

 dorsal japonicus, 



b. Diameter of eye less than postorbital length of head. 



vclitaris. 



Ann. d' Mag. X. Ili^t. Ser. 8. Vol. xiii. 2 



