REPORT ON THE AMPHIPODA. 285 



For Endhonius, Milne-Edwards, Liljeborg proposes the following new definition : — " Caput ah 

 annulo primo thoracico disjundum. Antennx mediocres, non pediformes, ef flagello 

 appendicidan carentes. Oapitis testx lohuli oculiferi mucronati. Pedes primi et secundi 

 pans suhdieliformes, illi his ininares. Femur pedum tertii et quarti parts dilatatum, et 

 eodem pedum ierpientium latino. Pedes ahdominales idtimi vel sexti parts tantum uno ramo 

 apical i, unguiformi. Appendix caudalis duplex, ntrinque processu brevi formata." 



Under the heading, "Tilliigg och annidrkningar vid de uti den fiirra uppsatsen ofver Grustaceerna 

 i hafvet vid Kullaherg i Slcane lemnade heskrifningarne," in place of " Ampelisca 

 Eschriddi? Kroyer; Liljehorg : Of vers, af Kongl. Vet. Akad:s. Fcirh. 1852, p. 6," he 

 describes Haploops, n. g., thus : — 



" OcuU duo simpilices, mimdissimi. Capid mediocre. Corpus compiressum, epimeris modids. 

 Antennx sat tenues, interdum longissimse, apipendice carentes, neque inferiores pone superiores 

 insertx. Mandihularum pars dentalis bifida. Palpus mandibularis longus, triarticulatus, 

 2]rocess7ii magna, articulo primo palpi longiori, adfixus. Maxillx solito modo formatx. 

 Laminx maxillarum secundi paris breves et latx, exteriores majoi'es, iriteriores suhtilissime 

 ciliatx. Palpus maxillarum tertii paris quadriartieulatus, articulo secundo reliquis majore 

 et articido ultimo minimo, non unguiformi, apice setifero. Pedes primi et secundi paris 

 graeiles, et sequentibus minores, tamen suhclieliformes, manu et ungue parvis instrudi. 

 Pedes tertii et quarti paris fere xquales, ungue longo et parum arcuato, et articulo pemdtimo 

 et anteptemdtimo sensim confluentibus, ut una cum ungue quasi digitum mobilem forwent, 

 et Id pedes cpwdammodo piTehensiles sint. Pedes quinti et sexti paris eequales, antecedentibus 

 duobus paribus breviores, pone vergentes, ungue parvulo retro flexo, articulo basali valde 

 dilatato, et articido secundo et tertio bremhus. Pedes septimi paris articulo basali eodem 

 antecedentium minore, ohlongo, fere redangulari, articulo quinto minimo, fere rudimenfari, 

 et unguis loco stilum minimum setiferum gerente. Pedum abdominalium ultimum 

 par antecedentia superans, ramis duobus lamellosis. Apperidix caudalis unica parvu, 

 lamellosa d profunde divisa. Mares et feminx inter se parum dissimiles. Feminarum 

 pedes thoracici apipiendice flabelliformi, ova iegente, carentes, ejusque loco apjxndicem 

 linearem mimdam habentes." The assigning of only two eyes to this genus is perhaps due 

 to an error of observation. 



" Haploops tubicola, mihi," is described as the type species, with the same reference as that for 

 the genus. This is followed by the description of "Haploops carinata, mihi," with a 

 reference to " Ampelisca Esehricliti ? mas, Liljeborg ; 1. c." 



Additional characters are given for the genus Ampelisca, Krijyer. Ampelisca jnacrocephala, 

 Liljeborg, is redesoribed, with a note that it stands very close to "Ampelisca Eschrichti," 

 Kr0yer. Gammarus mactdatus, Liljeborg, is recognised as a synonym of Cancer Gammarus 

 obtusatus, Montagu, and Gammarus longipes, Liljeborg, is redescribed. The latter has been 

 referred by Bruzelius to his genus Autonoe, of which Boeck retains it as the type. 



1855. Liljeborg, V. 



Ofversigt af de inom Skandinavien hittills funna arterna af sltigtet Gammarus 

 Fabr. af V. Liljeborg. (Inlemiiad den 10 Maj 1854). Kongl. Vetenskaps-Akade- 

 miens Handlingar for §,r 1853. Stockholm, 1855. pp. 443-460. 



Accepting the genus Ganunarus as defined by Milne-Edwards, Liljeborg here refers to a sub- 

 division of it or a subgenus, for which he proposes the name Gammaropsis, those species 

 which have the third uropods not laminar but stiliforra, conical, and the telson single, 

 tuberculiform. He notes that Gaininarus zebra, Rathke, is a Podorerns ; he de.'scvibes his 

 own species Gammarus mutatus, which Boeck identifies with Gainmartis locusta ; he 



