164 
I Bagkroppens Vedhseng or ingen vaesentlig Afvigelse 
fra den ssedvanlige Bygning at notere. 
Farven er ensformig graaagtig, uden Pigment. 
Lajngden af do unders0gte Exemplarer overstiger neppe 
Forekomst og Udbredning. 3 Exemplarer af denne 
Art toges under Expeditionens 2det Togt Syd af Jan Mayen 
(Stat. 224) paa circa 100 Favnes Dyb. Denne Art liar 
jeg ogsaa fra Varangerfjorden. Den er uden Tvivl at be- 
tragte som en arktisk Form. 
Gen. 3. Urothoe, Dana, 1852. 
Amer. Journ. of Science and Arts XIV. 
44. Urothoe abbreviata, G. 0. Sars, n. sp. 
(PI. XIV, Fig. 1), 
Urothoe abbreviata, Ci. 0. Sars, Crustacea & Pycnogonida nova etc., 
No. 23. 
Arts char acteristik. Legemet kort og underssetsigt, mod 
smaa Epimerer. Hovedet stort, fortil afsmalneude, bagtil 
til liver Side forsynct mod en udstaaende tilspidset Flig. 
3 die Bagkropssegments Sideplader bagtil retvinklede. Tngen 
0ine. lste Par Folere meget kcngere end 2det Par, mod 
Skaftets 3 Led af ens Lamgde, Svoben kort, Bisvoben rudi- 
mentaer. Do 2 forreste Fodpar mod liden Haand og stor 
Carpus. Do 3 bagre Par SEerdeles robuste, med Leddene 
fortykkede og piggede. Sidste Par Halefodder meget smaa. 
Halevedhaenget dybt kloftet. Farven hvidagtig. Laengden 3’™. 
Findested. Stat. 200. 
Bcmserkninger. Fra de 0vrige Arter af Slsegten 
kjendes denne Idle Art ved sin overordentlig korte og 
underssetsige Kropsform, de eiendommeligt formede lste 
Par Folero, Mangelen af 0ine, og ved de korte sidste Par 
Halefodder. 
Beskrivelse. Legemet er (se PI. XIV, Fig. 1) ual- 
mindelig kort og underssetsigt, bredere end licit og saaledes, 
uligt hvad Tilfmldet pleier at vtere med Amphipoderne, bcllere 
nedtrykt end sammentrykt, hvorfor det ogsaa er forbunden med 
adskillig Vanskelighed at faa et correct Sidevue af Dyret. 
Hovedet er forholdsvis stort, omtrent af samme Lamgde 
som de 4 forreste Segmenter tilsammen. Det lober fortil 
noget coniskt til og liar Sidekanterne skraat nedadstigende 
In the abdominal appendage there is no essential 
deviation in structure to be recorded. 
Colour a uniform greyish-white, without pigment. 
Length of the specimens examined scarcely exceeding 
Occurrence and Distribution. — Three examples of 
this species were taken on the 2nd cruise of the Expedi- 
tion, south of Jan Mayen (Stat. 224); depth about 100 
fathoms. The same species I have also obtained in the 
Varanger Fjord. It may doubtless be regarded as an 
Arctic form. 
Gen. 3. TJrothoe, Dana, 1852. 
Amer. Journ. of Science and Arts XIV. 
44. Urothoe abbreviata, G. 0. Sars, n. sp. 
(PI. XIV, fig. 1). 
Urothoe abbreviata, G\ 0. Sars, Crustacea & Pycnogonida nova etc., 
No. 23. 
Specific Character. — Body short and thickset, with 
small cpimera. Head large, tapering anteriorly, posteriorly 
furnished on either side with a projecting, acute lappet. 
Lateral plates on 3rd abdominal segment rectangular pos- 
teriorly. No eyes. First pair of antenme much longer 
than 2nd, with the 3 joints of peduncle uniform in length; 
flagellum short, secondary flagellum rudimentary. The two 
anterior pairs of legs with hand small and carpus large. 
The three posterior pairs exceedingly robust, with the joints 
inspissated and spinous. Last pair of caudal stylets very 
small. Telson deeply cleft. Colour whitish. Length 3 mm . 
Locality. — Stat. 200. 
Remarks. — From the other species of the genus, 
this diminutive form is easily recognized by its remarkably 
short and thickset body, the peculiar form distinguishing 
the 1st pair of antennae, the absence of eyes, and by the 
short last pair of caudal stylets. 
Description. — The body (see PI. XIV, flg. 1) re- 
markably short and thickset, broader than high, and thus, 
contrary to what, as a rule, is the case with Amphipods, rather 
depressed than compressed; hence, it proves a matter of 
no little difficulty to obtain a perfect side-view of the animal. 
The head is comparatively large, about equal in length 
to the 4 anterior segments taken together. It runs out 
anteriorly in a conical form, and has the lateral margins 
