81 



Gen. 19. TryphositeS, G-. 0. Sars, n. 

 Syn : Typhosa. Boeck, (ex parte). 



Body slender, with large coxal plates, the 1st pair of which does not 

 differ in form from the succeeding ones. Last pair of epimeral plates of meta- 

 some produced at the infero lateral-corners to a triangular upturned lobe. 

 Superior antennae slender, with the accessory appendage comparatively small. 

 Inferior antennae in female scarcely longer than the superior. Both pairs of 

 antennas, but especially the 2nd, greatly elongated in male. Epistome pro- 

 duced in the form of a lanceolate anteriorly pointing spine. Mandibles of mode- 

 rate size, molar expansion large and well developed, palp slender, originating 

 a little nearer the base than does the latter, terminal joint very narrow. 

 Maxillae about as in Tnjpliosa. Maxillipeds with the masticatory lobe very 

 large, oblong oval, slightly denticulated on the tip and inner edge ; palp reach- 

 ing but little beyond the latter, dactylus elongated, claw-like. Anterior gna- 

 thopoda of a similar slender form as in Tryplwsa. Posterior gnathopoda ra- 

 ther elongated; carpus very narrow, linear; propodos large, oblong, dilated at 

 the middle, tip not produced beneath the minute dactylus. Pereiopoda unusu- 

 ally slender and elongated, especially those of the posterior pairs, the basal 

 joint of which is greatly expanded. Last pair of uropoda rather large, con- 

 siderably projecting beyond the preceding pair, rami denticulated and setous 

 in both sexes. Telson deeply cleft, each of the terminal lobes armed at the 

 tip with 3 denticles. 



Remarks. The type of this genus is Anonyx longipes Sp. Bate, 

 which was referred by Boeck to his genus Tnjpliosa, though he remarks that 

 it differs markedly from the other species in the form of the epistome, so as 

 perhaps more properly to be generically separated. Such a separation 1 think 

 is in fact fully justified, since this form also differs from the species of 7Y//- 

 pliosa in several other characters of apparently generical value. 



33. Tryphosites longipes, (Sp. Bate). 



(PI. 28, fig. 3, PL 29 fig. 1.) 



Anonyx loiujipes, Sp. Bate. Catalogue of the Amphipoda in the British Museum, p. T'.i, pi. XIII, rig 



Syn: Anonyx ampulla, Sp. Bate (not Phipps) cf. 



Body rather compressed and of slender and elegant form. Cephaloii 

 less deep than usual, lateral corners somewhat produced and acute at the tip. 

 Anterior coxal plates more than twice as deep as the body; 1st pair slight ly 

 concaved at the anterior edge; 4th pair considerably expanded below and an 



