496 ■ G. 0. Sårs. 



5. Ihpiiioë gracilis, Sp. Bate. 

 (Tab. 10-14). 



Cuma trispinosa, Goodsir, Edinburgh New. Phil. Journ. f. 1843. 



Vol. 34, pg. 126, tab. Ill, fig. 1—7. 

 Halia trispinosa, Sp. Bate, Add. Nat. Hist. 2 Ser. Vol. 17, pg. 



459, tab. XIV, fig. V. 

 Venilia gracilis, Sp. Bate, ibidem pg. 460, tab. XV, fig. VII 



(mas adultus). 

 Iphinoë trispinosa, Sp. Bate, Ann. Nat. Hist. 2 Ser. Vol. 18, 



pg. 187. 

 Cyrianassa gracilis, Sp. Bate, ibidem (mas adultus). 

 Iphithoë serrata, Norman, Report of the Brit. Assoc, for the 



Advancement of Science f. 1866, pg. 201. 

 Cuma trispinosa, A. Dohrn, Untersuchungen über Arthropoden, 



I. tab. Ill, fig. 2—15. 

 Iphinoë gracilis, Meinert, Crustacea Isopoda, Amphipoda et 



Decapoda Daniæ, pg. 186. 



Charact. spec: (var. serrata). 



Corporis forma gracillima et elongata 



Scutum dorsale in femina supine distincte cristatum, crista sæpius in 

 fere tota longitudine serrata vel spinis minutis subæqvalibus antice curvatis 

 anterioribus 2 plerumqve intervallo longiore a ceteris disjunctis, armata, in 

 mare vulgo inermi vel in parte modo postfca serrata, ros tro sat longo hori- 

 zontali vel leviter resimo. 



Antennæ superiores sat elongatæ, articulo ultimo pedunculi antécédente 

 multo longiore et valde augusto, flagello majore uniarticulato appendice olfac- 

 toria breviuscula; inferiores in mare corporis longitudinem æqvantes. 



Maxillipedum 3*" paris articulus 3*1"^ extus expansionem magnam setis 

 numerosis ciliatis obsitam præbens, ultimi 3 angustissimi. 



Pedes 1"" paris scuto dorsali longiores, articulo basali ceteris junctis 

 breviore, seqventibus sensim attenuatis ; 2^^ paris valde setosi, articulo ultimo 

 2 antecedentibus junctis vix longiore. 



Uropoda sat robusta, ramis trunco brevioribus, externo setis numerosis 

 marginis interioris oruato, interno illo paulo breviore, articulo basali brevi, 

 subovato, aculeo terminali permagno, ultimo illo fere duplo longiore praeter 

 aculeos marginis interioris setis 2 apicalibus instructo. 



