320 U.S. NATIONAL MUSEUM BULLETIN 271 



Adeliella NichoUs 



Adeliella NichoUs, 1938. 



Type-species: A. laticornis NichoUs, 1938 (original designation). 



Upper lip and epistome not differentially produced; mandible with 

 "distinct molar", palp apparently attached level with molar; maxilli- 

 pedal palp article 4 rather small; maxillae poorly spinose or setose; 

 gnathopod 1 subchelate, short, articles 5 and 6 equal in length ; telson 

 short, emarginate or notched apically. Species: 1, antarctic, bathyal 

 (420 m). 



Alicella Chevreux 



Alicella Chevreux, 1899.— Stabbing, 1906. 



Type-species: A. gigantea Chevreux, 1899 (original designation). 

 See Chevreux, 1935. 



Upper lip and epistome not differentially produced; mandibular 

 cutting edge with small teeth, molar conicolaminate, setulose, palp 

 attached level with molar; inner plate of maxilla 1 densely setose on 

 medial edge ; maxillipedal palp article 4 very small ; gnathopod 1 feeble, 

 simple, articles 5 and 6 equal in length; article 6 of gnathopod 2 as 

 long as article 5, both very elongate and linear; rami of uropod 3 long, 

 equal, lanceolate, apparently outer ramus 1-articulate; telson of 

 medium length, deeply cleft. Species: 1, N. Atlantic, abyssal. 



[Allogaussia Schellenberg] 



Allogaussia Schellenberg, 1926a. — K. H. Barnard, 1932. 



Type-species: A. paradoxa Schellenberg, 1926a (selected by 

 Stasek, 1958). 



Type-species distinct from type-species of Orchomene by entire 

 telson, produced posterior lobe of coxa 5, asymmetrical posterior 

 lobe of pereopod 3. Species that have been assigned on basis of 

 telson alone : 6 (also included in Orchomene) . 



Amaryllis Haswell 



Amaryllis Haswell, 1880b.— Stabbing, 1906. 



Type-species: A. macro'phthalmus Haswell, 1880b (selected by 

 Pirlot, 1933b; indicated by Stebbing, 1888, p. 702!, through monotypy 

 by synonymy). 



Epistome apparently projecting in front of upper lip; mandibular 

 molar feeble, setulose, palp attached near proximal end of molar; 

 maxilla 1 lacking palp; gnathopod 1 simple, article 6 longer than 5; 

 coxa 1 partially hidden, following coxae increasingly larger; inner 

 ramus of uropod 2 constricted; telson of medium length, half or 



