REPORT ON THE AMPHIPODA. 229 



subcheliformes. Antennae superiores breviores, basi inferiorum longiores. Maxillipedes 

 ad apicem unguiculati," with the following note, " The species of this genus have the aspect 

 of many Amphithoe, and have probably been hitherto referred to that genus. They have 

 the very short posterior stylets of the Orchestise, and resemble them in habit and in the 

 absence of a palpus to the mandible ; while they differ in having the superior antenn;e 

 longest and in the stout spine or claw terminating the maxillipeds. The writer has 

 dissected the mouth of nearly a dozen species of Allorchestes." The italicized word lom^est 

 is no doubt only a slii^ for longer. 



The subfamily Lijdanasdnx, which includes Uristes in its second, and tHenia in its third division, 

 is defined as having : — " Antennte superiores ad basin crasste. Epimera grandia. Pedes sex 

 postici non prehensiles." 



The new genus Uristes has for its characters " Pedes primi subcheliformes, secundi non 

 subcheUformes ; reliqui non prehensiles;" "Antennie sup. non appendiculatse. Pedes 

 secundi vergiformes ; tertii quartiquc brevissimi." As pointed out by Spence Bate, it is 

 probably only founded on a misconception. 



The new genus Stenia is characterised by " Pedes primi secundique subcheliformes, reliqui non 

 prehensiles ; " " Antennas sup. non appendiculata;." This genus Dana subsequently 

 dropped, as not distinct from Anonyx, lvi'0yer. 



The new genus Clydonia is placed among those Corophidae which have " Digiti uuUi 2-articulati," 

 and further defined as having " Antennre longaj, flagollo crasso rigidoque, obsolete articulato." 

 " Antennas styliformes, rectte. Pedes filiformes, non prehensiles, sex postici praelongi." 

 Bovallius, 1885, identifies this genus with Tyro, MUne-Edwards, 1840. 



The new genus IciHus is defined simply by the words "Pedes toti vergiformes, nulli prehensiles." 

 Its companion in the Icilidae, Pterygocera, Latreille, " Pedes postici sublamellati," is a 

 synonym of Lepidactylis, Say {Haitstorius, P. L. >S. Miiller), which Dana places among 

 the Gammarinae. 



Dana observes in his notes that Mxra and Melita are separated by Leach, and Amathia by 

 liathke, from the genus Gannnanis, that Auiplntlii'ie includes the De.ramine and Pherusa of 

 Leach, that Eudrus of Ki-0yer is not sufficiently distinct even for a subgenus, that Kr0yer's 

 Microcheles, Rathke's Ipliimedia, and Owen's Acantlwsoma are near Amphithoe, that 

 Siphonwcetes of Krpyer differs from Podocerus only in having the posterior legs longer than 

 the four preceding, and that Glauconoine of Ki'0yer has the hands and antennje of Uneiola. 



1849. LiLjEBORG (subsequently Lilljeborg) Wilhelm, born 1816 (G. 0. Sars). 



Zoologisk resa i norra Ryssland och Finnmarken. Ofversigt af Kongi. 



Vetenskaps-Akademiens Forhandlingai". Arg. G. 1849. No. 1. Stockliohn. 



pp. 16-37. 



This letter from Liljeborg to Loven is mentioned in Boeck's list, but I cannot find that it 

 contains any information about the Amphipoda, or any mention of Crustacea, except the 

 bare fact, p. 32, that at Tromso in Norway he had observed some which he had not at the 

 time of writing determined. 



1849. Lucas, H. 



Exploration scientifique de TAlgerie pendant les anuees, 1840, 1841, 1842. 



Zoologie. Histoii'c naturelle des animaux articules. 



In the " Premiere Classe.- — Crustaces. Troisiime ordre, les Amphipodes. Premiere Famille, les 

 Crevettines. Premiere Tribu, les Crevettines sauteuses," he gives the following species, 



