REPORT ON THE AMPHIPODA. 355 



Lydanassa grylliis, Mandt. fig. 1, " Eurytenes Magelhanicus, Lilljeboeg." Why he rejects 

 Lilljeborg's genus is not explained. 



2. "Lydanassa Vahli," Kroyer, " in itinerariis arcticis cum sequente omnino confusa, sub nomine 



Talitro nugace (Ross, Parry's attempt to reach the North Pole, 205), sive Gammaro nugace 

 (Sabine, Append, to Parry's First Voy., 229) edita.^Var. segmenti ahdominalis tertii 

 angulo postico rotundato, neque truncato nee omarginato, statura niinore." 



3. Lysianassa lagena, Kriiyer, " = Cancer 7iugnx, Phipps." Of these, between three fathoms 



and sixty, there is " copia stupenda, eo ut, si perite ac prudenter in captui'a versaris, hos 

 pelagi voracissimos vespillones molibus milliariis cadavere avium vel phocarum brevi e f undo 

 elicere potes." 



4. Lysianassa tumida {Anonyx),. 'Kmye.x, " = An. tumidus, Bruzel." "In spongiis et sacco 



branchiali ascidiarum vitam saepe degens." 



5. "Lysianassa Martend" n. s., fig. 2, which Boeck transfers to Anonyx. 



6. Lysianassa crispata, n. s., fig. 3, considered by Boeck to be a synonym of his OrcJwmene 



serratus. 



7. Lysianassa produda. n. s., fig. 4, identified by Boeck with the earlier Anonyx pumilus 



Lilljeborg, 1865, to which Goes himself says it is " proxima et vix distincta." 

 Lysianassa ahyssi, n. s., fig. 5, called by Boeck Hippomedon ahyssi. 



8. Lysianassa hoWolli {Anonyx), Kroyer. 9. Lysianassa minuta {Anonyx), Kroyer, " vix An. 



minutus, Sp. Bate. Cat. of Amiihip." 10. Lysianassa gulosa {Anonyx), Kroyer. 



11. Lysiaiiassa umho, n. s., fig. 6, by Boeck referred to his own genus Orchomene, by Sars, 



1882, to Lcpidepecreimi, Bate and Westwood. A comparison of the description and 

 figures of Lepidepecreum cantiatum, Bate and Westwood, with those of Lysianassa 

 umbo, Goes, excites the strong suspicicm that they are the same species, and that the 

 English authors have not noticed the boss (umbo) on the fifth side-plates, while the little 

 two- to three-jointed accessory flagellum has been accidentally wanting in their specimens. 

 The definition of Lepidepecreum will in that case need some alteration. The type species 

 ■would stiU be Lepidepecreum longicorne, Sp. Bate, 1862, with carinatum and wnho for 

 synonyms. 



12. "Lysianassa Edwardsi" {Anonyx), Kroyer, "Nat. Tidsskr. 2 R. II. 1; Voy. en Scandin. 

 t. 16 f. 1 (icone vix fida) ; non Sp. Bate, Brit. SessUe-eyed Crust. II. 94, nee Catalogue of 

 Amphip. in Brit. Mus. 73, t. 11, f. 5." 



13. Lysianassa plauta {Anonyx), 'K.r'6'^eT. 14. Lysianassa litoralis {Anonyx), Kroyer, " = 

 Alibrotus litoralis, Sp. Bate." 



15. Lysianassa ? cymba, n. s., fig. 7. "Medium tenet inter Lysianassas et Stegocephalos." On 



this Boeck observes, " Whether this form belongs to Lysianassa or is an intermediate 

 form between that and StegocepJiahis I cannot decide as I have not seen the animal. 

 Among the Lydanassinm we have a form in which the back is carLnate, Orchomene umbo, 

 ■while I do not know of any with carinate back belonging to the Stegocephalinx. The 

 hand of the second gnathopods also refers this form to the LysianassiuBe, but the very 

 elongate hand of the first gnathopods shows that it cannot belong to the genus Orchomene, 

 which it otherwise resembles by its deep side-plates. Before it can be placed in a new 

 genus of the Lysianassinai fresh investigation is required." 



16. Stegoc.ephalus ampulla {Cancer), Phipps, " = Gammaru3 ampulla, Eoss," " = Steg. inflatus, 

 Kroy.," " = Stegocephalus ampulla. Bell." "FormaB duae occurrunt : — Altera epimero 

 quarto seque fere alto ac lato, articulo pedum sexti et septimi paris primo dilatato, angulo 

 infero postico subrecto aut acuto. — Fig. 8. Altera epLm. quarto latioro quam altiore, 

 articulo pedis sexti primo angusto, angulo infero postico lobulo rotundato determinato, 

 pedes septimi articulo eodem dilatato margiue infero postico rotundato nee angulato. 

 — Fig. 9. An differentia sexualis 1 " 



