174 UULLETIN 3(), UNITED .STATES NATIONAL MUSEUM. 



the part of tlie ramus wliicli immediately succeeds it; aveolar border 

 tiat. 



Measurements of the slcull. — (British Museum, 359a. L. elcctra, Type.) 

 Total leugtb, 45.7"" ; leugtli of rostrum, 24.35"" ; breadth of rostrum at 

 base, 13.95"" 5 at its middle, 9.2""; breadth of intermaxilhe at same 

 point, G.l™; breadth between orbits, 25.2"" ; leugth of temporal fossa, 

 9.4"" ; depth of temporal fossa, 5.5 "■ . 



Ilahitat. — Indian Ocean; tropical Pacilic Ocean; Hawaii. 



LAGENOKHYNCIIUS OBSCURUS (Gray). 

 (Plato 2t>, fags. 1 and 2.) 



Form apparently like that of L. aciitus, but the snout longer and 

 narrower and uot distinctly divided off from the head. 



"Fins moderate and falcate; neck and belly white; a black baud 

 from the angle of tbe mouth to the pectoral fins; lateral oblique streaks 

 of white; otherwise entirely black" (Gray). 



Teeth, |^. Skull similar to that of X. ohliquidens, but smaller. Pter^'- 

 goid boues in contact in the median line. Intermaxilhe broad proxi- 

 mally, more or less convex distally ; outer margins straight. Length 

 of rostrum slightly exceeding one half the total length of the skull. 

 Temporal fossic moderate, elliptical ; their leugth always exceeding the 

 width of the beak at the middle. 



Measurements of the exterior. — (British Museum, type skin, 41,1733).* 

 Total length, 05 inches (165.1*^^'") ; extremity of snout to corner of mouth, 

 8.7 inches (22.1"") ; to base of pectoral fin, 16.5 inches (41.9^"') ; to base 

 of dorsal fin, 31.75 inches (80.0"") ; vertical height of dorsal fin, 7.5 inches 

 (19""); length of pectoral fin, 11 inches (27.9""); breadth of flukes, 

 15.75 inches (40""). 



Measurements of the slull. — (British Museum, 354 a.) Total length, 

 30.8""; length of rostrum, 20.1""; breadth of rostrum at base, 9.3"'; at 

 its middle, 0.1""; breadth of intermaxilhe at same point, 3.3""; breadth 

 between orbits, 15.5""; leugtli of temporal fossa, 0.7""; depth of tem- 

 poral fossa, 4.8"". 



Ilahitat. — Cape of Good Dope (Graij); Chili (Flower)- New Zealand 

 [Hector, ? another s])ecies). 



8. SAGMATIAS Cope. 



Rostrum moderate, broad and tapering. Rostral portion of inter- 

 maxilhe flat. Triangular area in front of superior nares elevated above 

 the plane of the surrounding parts. Pterygoid bones short, scarcely or 

 not touching in the median line. Teeth small, 32. 



Exterior and skeleton not known. 



* Tbis mounted skiu is very much warped from its original shape, and tlie measure- 

 ments are, therefore, of doubtful value, 



