88 



in front to a compressed linguiform lobe, posterior lip rather large, mem 

 branous. Mandibles very powerful, cutting edge provided at the inner corner 

 with one or two secondary teeth, molar expansion rather prominent, with the 

 tip conically produced and densely ciliated ; palp shorter than the mandible 

 and originating much nearer its extremity than does the latter. First pair of 

 maxillse with the masticatory lobe rather large, obliquely truncated and armed 

 with strong denticulated spines; basal lobe small, bisetose; palp large, spathu- 

 late, and armed on the terminal edge with short aculei. Second pair of max- 

 illa? with the inner lobe much smaller than the outer. Maxillipeds large, 

 masticatory lobe broadly oval, not reaching to the end of the antepenultimate 

 joint of the palp; the latter robust, with the terminal joint claw-shaped. An- 

 terior gnathopoda short and stout, distinctly subcheliform, the propodos being 

 nearly transversely truncated at the tip, dactylus short and simple. Posterior 

 gnathopoda moderately slender, propodos oval, slightly produced at the tip be- 

 neath the minute dactylus. Pereiopoda rather elongate, basal joint of the 3 

 posterior pairs successively increasing in size. Branchial lamellae large and 

 distinctly plicated transversally on both sides. Last pair of uropoda consi- 

 derably projecting be} T ond the preceding pair, rami lanceolate, denticulated 

 and setous on the edges. Telson of moderate size, deeply cleft, 



Remarks. In the restricted sense in which the genus is here taken, 

 it only comprises one of the Kroyerian species, viz., his Anonyx lagena. An- 

 other nearly related species discovered by Boeck, A. Lilljeborgii, will be de- 

 scribed together with the type species in the sequel. Besides, 3 other forms 

 may without any doubt be adduced to the same genus, viz., A. ampulloides 

 Sp. Bate, A. Zsclimdi Pfeffer, and Lysianassa Martensi Groes. Probably also 

 several other exotic forms may on closer examination be found to belong to 

 the present genus. 



36. Anonyx nugax, (Phipps). 



(PI. 31.) 



('/nicer niifjajr, Phipps, Voyage au Pole boreale, p. 192, PI. 1'2, fig. :\. 

 Syn : Anonyx ampulla, Kroyer (not Phipps). 

 Anonyx lagena, Kroyer. 

 Anonyx appendiculosus, Kroyer (male). 



Body not very high in proportion to its length, back evenly vaulted. 

 Cephalon about the length of the 1st segment of mesosome, lateral corners but 

 slightly produced and rounded at the tip. Anterior coxal plates not twice as 

 deep as the body, in male considerably narrower than in female; 1st pair 



