284 THE VOYAGE OF H.M.S. CHALLENGER. 



1855. LiLJEBORG, W. 



Om Hafs Crustaceer vid KuUaberg i Sk^ne. Ofversigt af Kongl. Vetenskaps- 

 Akademiens Forliandlingar. Tolfte Argangen, 1855. Stockholm, 1856. pp. 

 117-138. 



This is an appendix to the contribution of 1852. Attention is called to the neglect of the 

 sexual characteristics in the Amphipoda, a better acquaintance with which would probably 

 ' necessitate some changes in the established genera and species. As marks of the female, 



LUjeborg notes relatively larger epimera, more or less developed ovarial appendages by the 

 side of the branchias, smaller antenna and gnathopods, and often the presence of eggs in 

 the pouch. Under the heading " Crustacea marina ad KuUaberg in Scania mense Julii 

 1852 collecta," he records, with full descriptions of the new species, Avipelisca Isevigata, 

 n. s.; Ampelisca tenuicm'nis, u. s.; " Gammarus Sabini," Leach; Gammarus angulosus, 

 H. Katlike; Gammarus 2>oecilurus, H. Eathke; Gammarus eryfhrophtJialmus, n. s.; 

 Gammarus macronijx, n. s.; Leucothoe articulosa (Montagu), with a long description, an 

 account of its differences from Leucothoe furina (Savigny), and a concluding observation 

 that Kroyer's Leucothoe clypeata and glacialis as well as Leucotlwe norvegica LDjeborg can 

 scarcely be included in this genus ; Ischyroceras minutus, Liljeborg, with a description, and 

 a discussion of its relationship to Ischyrocerus auguipes, Krtiyer, and Jschyrocerus latipes, 

 Kroyer, which are both, he says, several times larger than Ischyrocerus minutus; Eriethonius 

 difformis, M. -Edwards, with a long description, and a discussion of the relationship of 

 Ericthonius to Podocerus, etc.; Laphystius sturionis, Kroyer, with a description ; Capiella 

 lohata (0. F. MiiUer) ; Leptomera pedata (AbUdgaard). 



Gammarus erythrophthalmus has been confused by Boeck, as we learn from G. 0. Sars, with a 

 different species. Liljeborg's account of his species is as follows : — " Corporis forma sat 

 robusta ; epimera parva. Longit. cu'c. 7 miUim. OcuU magni, renifornies, rubri. Frons 

 inermis. Dorsum laeve. Annuli tres postici abdominis sine aculeis. Antenn?e longitudine 

 mediocres, hirsutse ; superiores inferioribus parum longiores, pedunculi articulo primo ceteris 

 ctassiore, quam secundo vero breviore. Articulus secundus tertio non multo longior. 

 Flagellum pedunculo pauUo brevius, articulis ciro. quindecim. Flagellum appendiculare 

 longum, articulis sex. Antennas inferiores pone superiores fixes. Pedunculus earum eidem 

 antennarum superiorum circ. longitudine aeqnalis, articulo basali infra processu longo, 

 articulo secundo non plane apicem articuli primi pedunculi antenn. sui)eriorum attingente, 

 articulo tertio et quarto inter se circ. sequalibus. Flagellum articulis duodecim. Pedum 

 thor. primi et secundi paris manus valde inaequales, hae illis multo majores. lUae fere 

 ovatiE, carpo magnitudine circ. sequales, prKsertim jjostice setosse. Margines postici palmte 

 et carpi angulum acutum formantes ; apud marem et feminam inter se similes. Hae apud 

 marem validse, carpo multo majores, oblique triangulares, margine antico arcuato, postico 

 infra oblique truncato, crenulato, setifero, processibusque tribus brevibus instructo. Apud 

 feminam paullo minores sunt, ovatai, et postice tantum processibus duobus praeditas. Pedes 

 tertii et quarti paris sequentibus breviores, articulo tertio sat dilatato, ungue vero forma 

 solita. Pedes sexti et septimi paris ceteris longiores, inter se ciroiter cequales, apicem pedum 

 abdominaUum ultimorum attingentes, articulo basali valde dilatato. Rami pedum 

 abdominalium ultimorum conici vel stiliformes, supra et ad apicem aculeati, inter se et 

 trunco longitudine circ. tequales, antecedentes paullum superantes. Appendix caudalis 

 brevis et crassa, postice truncata, supra postice eminentiis duabus parvulis lateralibus 

 aculeatis. — Color flavescenti-albidus fasciis dorsalibus lutescentibus. Rarus ; in retibus 

 piscatorum e 14-16 orgyai'um prof undo acceptus." From all known species within the 

 genus {Gammarus) it differs, he says, by its red eyes. It is not an uncommon species, 

 I may remark, on the south coast of Devonshu-e. 



