med mere eller mindre tydelige violette Tvaerbaand. Lege- 
mets Lamgde 2 1 / y™; Spandvidde In'"" 1 . 
Bemserkninger. JSTservserende Art er egentlig fqrst 
kjendeligt beskreven af Hoek. Hvorvidt den i Virkeligheden 
er identisk med den af Leach saaledes bensevnte Art, an- 
ser ogsaa Hoek for meget tvivlsomt. Derimod mener han 
med Bestemthed i Johnstons Beskrivelse at gjenkjende sin 
Art. Om den her omhandlede Forms Identitet. med den 
af Hoek beskrevne, kan der efter min Mening ingensom- 
heist Tvivl vaere. Egentlig er Artsnavnet gracile kun lidet 
betegnende, da der gives mange Alter af en langt slankere 
Kropsform, ja n;erv;.erende Form hqrer endog i Yirkelig- 
heden til de i denne Henseende mindst udprsegede af 
Slaegten. 
Beskrivelse. Hos ingen af de af mig indsamlede 
Exemplarer overskrider Legemets Lrnngde 2 1 /,*"". medens 
Hoek angiver 4”™ som Maximum. Spandviden har jeg fun- 
det at vaere omkring Af alle her opforte Alter af 
Slfegten er denne saaledes den mindste. 
Legemets Form (se PI. V, Fig. 1) er vistnok temme- 
lig spinkel, sammenlignet med samme lios Here andre Pyc- 
nogonideer ; men blandt Arterne af nmrvierende Slmgt ud- 
mserker den sig, som ovenfor bennerket, slet ilcke i saa 
Henseende. Ja Gangfodderne er her i Forhold til Kroppen 
endog kortere end hos nogen af de her opforte Arter. 
Selve Kroppen (Fig 1 a, I b) er cylindrisk og noget user 
af ens Rredde ovcralt, ganske glat og med Segmenterne 
vel sondrede fra hinanden. Sidefortsatserne er omtront saa 
lange som Kroppen er bred og vel adskilte, skjondt Mellem- 
rummene mellem dem ikke er synderlig hrede. Hovedseg- 
mentet er temmelig stort, omtrent saa langt som de 2 fol- 
gende Segmenter tilsainmen og har on tydelig, skjondt for- 
h olds vis kortHals; Pandedelen er ved Enden omtrent dob- 
belt saa bred som Halsen og langs Midten oventil noget 
rendeformigt fordybet. Halesegmentet er forholdsvis lidet, 
simpelt cylindriskt og afrundet i Enden, samt noget opad- 
rettet. 
Gieknuden (se Fig. 1 a, 1 c), hvis Afstand fra Pande- 
randen er omtrent dob belt saa stor som fra den bagre Kant 
af Hovedsegmentet, er noget ophoiet. af stump konisk Form ; 
dog er Hoiden neppe saa stor som Breden ved Basis. 
Lindserne er vel udvildede, af ens Storrelse og beliggende 
nsermere Basis end Spidsen af Gieknuden ; det underliggende 
Pigment er af morkerod Farve. 
Snabelen (se Fig. la, lb) er noget kortere end Ho- 
vedsegmentet og lige fortilstrakt. Den er temmelig tyk, 
cylindrisk, med Enden stumpt tilrundet, og ganske glat. 
Saxlemmerne (ibid.) er kraftigt udviklede og lige ud- 
strakte, betydelig kengere end Hovedsegmentet. Skaftet er 
cylindriskt, lidt buet og ved Enden i den ydre Kant for- 
synet med nogle korte Haar. Haanden (Fig. 1 d), der 
ssedvanligvis er rettet indad under en ret Vinkel med Skaf- 
tet, er omtrent af dettes Lrnngde, temmelig opsvulmet, af 
aflang oval Form og henimod Basis af Fingrene besat med 
Colour white, with more or less distinct violet transversal 
bands. Length of body extent 15””". 
Remarks. Hoek was really the first to give a recog- 
nizable description of the present species. But whether 
it is really identical with the species thus designated by 
Leach, Hoek also regards as very doubtful. On the other 
hand, he feels quite sure that the form described by John- 
ston can be none other than his species. The identity of 
the form treated of here with Hook’s species can, in my 
judgment, admit of no doiiht whatever. The specific name 
gracile is really not significative, as there are many species 
with a far more slender body, indeed the present form 
belongs even to the least characteristic of the genus in 
that respect. 
Description. In none of the specimens collected by 
the writer does the length of the body exceed 2 1 /V’™, 
whereas Hoek gives 4”™ as the maximum. The extent I 
have found to be about 15”™. Of all the species recorded 
here, this is therefore the smallest. 
Tlie body (se PI. V, fig. 1) is indeed rather slender 
compared with that of several other Pvcnogonids ; but, 
as stated above, in this respect it in nowise distinguishes 
itself among the species of the present genus. Indeed, 
the ambulatory legs are, in relation to the body, even 
shorter than in any ol the species here recorded. The 
trunk itself (fig. 1 a, 1 b) is cylindric and well-nigh uniform 
in breadth throughout, quite smooth, and with the segments 
well separated from each other. The lateral processes 
are about as long as the trunk is broad, and well separated, 
though the interspaces between them are not particularly 
broad. The cephalic segment is rather large, about as 
long as the 2 succeeding segments taken together, and has 
a distinct though comparatively short neck; the frontal 
part is at the end about twice as broad as the neck, and 
along the middle dorsallv somewhat canalieularly hollowed. 
The caudal segment is comparatively small, simple cylindric, 
rounded at the extremity and also directed a little up- 
wards. 
The oculiferous tubercle (see fig. 1 a, l c), located 
about twice as far from the frontal edge as from the 
posterior edge of the cephalic segment, is somewhat ele- 
vated, conically obtuse in form; the height is, however, 
scarcely as great as the breadth at the base. The lenses 
are well developed, equal in size, and located nearer to 
the base than to the point of the oculiferous tubercle ; the 
subjacent pigment has a dark-red colour. 
The proboscis (see fig. 1 a, 1 b), pointing straight 
forwards, is somewhat shorter than the cephalic segment. 
It is rather thick, cylindric, with the tip obtusely rounded, 
and quite smooth. 
The chelifori (ibid.) are powerfully developed and, 
extended straight out, a good deal longer than the cephalic 
segment. The scape is cylindrical, somewhat arcuate, and 
at the extremity on the outer edge provided with a few short 
hairs. The hand (fig. 1 d), which is generally directed in- 
vaids at a right angle to the scape, attains about the length 
of that part, is rather swollen, oblongo-oval in form, and 
