220 



Gen. 3. AmphilochoideS, G. 0. Sars, n. 



Syn: Aniplnlochus, Boerk (part). 



Body somewhat more slender than in the preceding genus, with the 

 coxal plates not quite so deep, otherwise of a ratlier similar aspect. An- 

 tennae of much the same structure as in that genus, tliough the inferior ones 

 appear somewhat longer than the superior. Anterior lip rather broad, and 

 but sliglitly emarginated at the tip; posterior lip with the lateral lobes 

 strongly inflexed, and having the outer corner rounded off. Mandibles of 

 moderate size, cutting part about as in Amphilodius, molar expansion obsolete, 

 palp comparatively large, much longer than the mandible, and nearly naked. 

 First pair of maxillEe rather strong, masticatory lobe large, spinous at the 

 upper corner, and exhibiting below the latter a coarsely-serrated laminar 

 expansion, basal lobe extremely small, nearly obsolete, palp well-developed, 

 biarticulate, last joint spatbulate, and coarsely dentated on the distal edge. 

 Second pair of maxillse extremely minute and rudimentary, lobes mammilli- 

 form and having only a few simple hairs at the tip. Maxillipeds well- 

 developed, basal lobes rather broad, and obtusely truncated at the tip, masti- 

 catory lobes comparatively small, not reaching to the end of the 1st joint 

 of the palp, the latter much elongated, with the penultimate joint rather 

 large, and somewhat dilated distally. Gnathopoda of unequal size, the 

 posterior ones being much more poverful than the anterior, piopodos in both 

 pairs comparatively large, dilated in the middle, and having a very oblique 

 palm, dactylus very slender, and armed on both pairs, or on the posterior 

 pair only, with an obtuse nodiform denticle, originating at the base inside, 

 carpus produced at the end inferiorly to a setiferous lobe, more elongated 

 oh the posterior pair, meral joint of the latter having inferiorly a tooth- 

 like projection. Pereiopoda, uropoda and telson about as in the pre- 

 ceding genus. 



Remarks. — The type of this new genus is AmpJiiloclius odontony.r of 

 Boeck, which, on a closer examination, I have found to differ so materiallj- 

 from the type species of Amphilochus, especially in the structure of the oral 

 parts, as more properly to be gcnerically separated. The value of this gemis 

 is still mbre supported by the discovery of another new species, which, though 

 iindoubtedly distinct, perfectly agrees with the type species in all essential 

 characteristics. 



