190 
Gen. 2. I )anaia, Sp. Bate, 1862. 
Catalogue of Amphipoda in Brit. Museum. 
Sjti: Cressa, Boeck. 
57. Danaia abyssicola, G. 0. Sars, n. sp. 
(PI. XVI. Fig. 1 a). 
Danaia abyssicola , Gr. 0. Sars, Crust. & Pycnogonida nova etc., No. 30. 
Artseharacteristik. Legem et kort og underage tsigt. 
Hovedet fortil afkuttet med Sidehjernerne nedentil udtrukne 
i en skarp fortilretfcet Spills. I ste Par Epimerer rudimentaere, 
de 2 fplgende i det nedre hagre Hjprne bevsebnede med 
2 — 3 skarpc Taender; 4de Pur sterst, i den bagre Kant 
oventil udrandet og nedenfor Udrandniugen skarpt-vin klet ; 
de 2 tolgede Par tydeligt udviklede, tvelappede. Be 3 for- 
reste Bagkropssegmenters Sideplader nedentil skarpt-vink- 
lede. Ingen 0ine. lste Par Eolere stserkt forlsengede og 
tynde, Isengere end Legemet, Skaftets lste Led sterst, Svo- 
ben over dobbelt saa lang som Ska.ftet, traadforinig. 2det 
Par Folere neppe halvt saa iange som lste Par. 2det 
Fodpar kraftigt udviklet, med 4de Led nedentil gaaende 
ud i en smal bprstebesat Lap; Haanden bred og sammen- 
trykt, med Griberanden mesten tvaer, nedentil begraendset 
af en kortFortsats og til liver Side bevsebnet mod en Btekke 
Tomer. De 3 bagerste Fodpar temmelig robuste, alle med 
pladeformigt udvidet, ovalt Hofteled. Halefedderne og Hale- 
vedhsengot at smdvanlig Form. Fnrven hvidagtig. Lmng- 
den 6*". 
Findested. Stat. 286. 
Bemserkninger. Shegten Cressa Boeck er utvivlsomt 
identisk mod Sp. Bates Slrngt Danaia, hvilket sidste Navu 
bar Prioriteton. og den ene af de af Boeck opstillede Arter, 
Cr. Schodtei, cr, hvad der tydeligt nok fremgaar af Mr. 
Stebbings Underspgelser, identisk med den typiske Art, 
Danaia dubia Sp. Bate. Den her omkandlede Art skiller 
sig fra de 2 tidligere bekjendte, D. dubia Sp. Bate og D. 
minuta Boeck, ved den fuldstamdige Mangel af 0ine, ved 
de overordentlig stmrkt forkengede lste Par Folere samt 
ved lste Fodpars Form. 
Beskrivelse. Legemet er (se PL XVI, Fig. 1) kort 
og underssetsigt samt temmelig hoit og sammentrykt fra 
Siderne. 
Hovedet er forholdsvis lidet og smalt, i Enden mesten 
tvaert afkuttet, med Sidehjprnerne nedentil udtrukne i en 
skarp horizontal fortilrettet Torn. 
lste Par Epimerer er som bos foregaaende Slsegt 
ganske rudimentsere og ikke synlige udvendigt. De 3 fol- 
gende Par er derimod meget store, mesten dobbelt saa 
hoie som Kroppen. 2det og 3die Par har det nedre bagre 
Hjprne bevsebnet med 2 — 3 skarpe Saugtakker, der vender 
Gen. 2. Danaia, Sp. Bate, 1862. 
Catalogue of Amphipoda in Brit. Museum. 
Syn : Cressa, Boeck. 
57. Danaia abyssicola, G. 0. Sars, n. sp. 
(PI. XVI. fig. 1 a). 
Danaia abyssicola, Ct. 0. Sars, Crust. & Pycnogonida nova etc., No. 30. 
Specific Character. — Body short and thickset. Head 
truncate anteriorly, with lateral corners produced below 
to a sharp, forward-directed point. First pair of epimera 
rudimentary, the 2 succeeding pairs armed in the lower 
posterior corner with 2 or 3 acute teeth; 4th pair largest, 
emarginate above along the posterior border and acute-angled 
below the emargination; the 2 succeeding pairs distinctly 
developed, bilobular. Lateral plates of the 3 anterior ab- 
dominal segments acute-angled below. Xo eyes. First pair 
of antennae greatly produced and slender, exceeding body 
in length, 1st joint of peduncle largest, flagellum more 
than twice as long as peduncle, filiform. Second pair of 
antennae scarcely half the length of 1st. Second pair of 
legs powerfully developed, with 4th joint jutting out below 
as a narrow, bristle-bearing lobe; hand broad and com- 
pressed, with palmar margin well-nigh transverse, bounded 
below by a short prolation and armed on either side with 
a row of spines. The 3 posterior pairs of legs rather 
robust, each having an oval, lamelliform-dilated basal joint. 
Caudal stylets and telson of usual form. Colour whitish. 
Length 6”‘ m . 
Locality. — Stat. 286. 
Remarks. — The genus Cressa Boeck is unquestion- 
ably identical with Sp. Bates genus Danaia, the latter of 
the 2 names however being entitled to priority; and one 
of the species established by Boeck, viz. Cr. Schodtei', is 
plainly identical — a fact sufficiently evident from the 
result of Mr. Stebbing’s investigations — with the type- 
species, Danaia dubia Sp. Bate. The species here treated 
of differs from the 2 previously known, D. dubia Sp. Bate 
and J). minuta Boeck, by the total want of eyes, the remark- 
ably elongated 1st pair of antennae, and by the form of the 
1st pair of legs. 
Description. — The body (see PL XVI, fig. 1) is 
short and thickset, as also rather high and compressed 
from the sides. 
The head is comparatively small and narrow, well- 
nigh transversely truncate at the extremity, with the lateral 
corners produced below to a sharp, horizontal, anterior- 
directed spine. 
The 1st pair of epimera arc, as in the preceding 
genus, quite rudimentary and not visible externally. The 3 
succeeding pairs, on the contrary, are very large, well-nigh 
twice as deep as the body. The 2nd and 3rd pairs have 
the lower posterior angle armed with 2 or 3 sharp teeth, 
