158 
3die Bagkropsscgments Sideplader er ikko bagtil ud- 
trukne, men stiunpt afrundede. 4de Segment viser oventil 
et pukkelformigt Fremspring. 
0ine mangier ganske og aldeles. 
lste Par Folere (Fig. 5 a) er meget korte, med Ba- 
salledet overordentlig massivt og opsvulmet. Svoberne er 
forholdsvis smaa og nsesten af ens Lsengcle, Hovedsvoben 
6-leddet, Bisveben 5-leddet. 
2det Par Folere (Fig. 5 b) er ligeledes korte og ro- 
buste, med Skaftets nsestsidste Led sammentrvkt og dan- 
nende bagtil en bredt afrundet Lap, livortil er faestet en 
Bad af Fjmrbprster og en Del korte Tomer. Svoben er 
forholdsvis liden og 6-leddet. 
Kindbakkerne (Fig. 5 c) er kraftigt ndviklede, med 
kort, men tydelig Tyggeknude og forholdsvis meget stor 
Palpe. 
lste Par Kjsever (Fig. 5 d ) er derimod smaa, med 
Tyggelappen kort og skraat afskaaret i Enden, Palpen for- 
holdsvis smal og den indre Lap rudimenter. 
* 
2det Par Kjaever (Fig. 5 e ) har begge Lapper om- 
trent af ens Storrelse, men den indre staerkere borstebesat. 
Kjaevefodderne (Fig. 5 /) viser den ssedvanlige Byg- 
ning. Den ydre Tyggelap er forholdsvis kort og forsynet 
med lange boiede Borster. Palpen er vel udviklet, med 
sidste Led kloformigt. 
Do 2 forreste Fodpar (Fig. 5 g) har Haanden om- 
vendt psereformig og lsengere end de 3 foregaaende Led 
tilsammen. G-riberanden or meget skraa og indtager Storste- 
parten af Haandens Lsengde saint begramdses bagtil kun 
af et stumpt Hjorne, hvortil er fasstet en enkelt Torn. 
De 2 folgende Fodpar (Fig. 5 h) er af den jsaedvan- 
lige Form, med 3die Led meget stort og ligesom de fol- 
gende i den bagre Kant teet borstebesat. 
5te Fodpar (Fig. 6 i) har som hos de ovrige Arter 
af denne Slaegt Hofteleddet simpelt linemrt, ikke som lios 
Phoxus pladeformigt ndvidet. De ovrige Led er i begge 
Kanter taet borstebesatte ; Borsterne her som overalt tint 
cilierede. 
6te Fodpar (Fig. 5) er staerkt forlsenget og temmelig 
kraftigt bygget, med Hofteleddet smalt ovalt, sidste Led 
kengere end de ovrige og i den ene Kant besat med en 
tet Bad af temmelig lange Borster. 
Sidste Fodpar (Fig. 5 k) er saerdeles lidet, med Hofte- 
leddet som smdvanlig pladeformigt ndvidet, men af en tem- 
melig urogelmmssig Form og noget bredere end hoit. Dots 
bagre Band er sterlet udbuet og tint sa.ugtakket samt for- 
synet med korte Borster; den forreste danner nedentil en 
fremspringende Yinkel og er nedenfor denne besat med en 
taet Bad af lange Fjserborster. De ovrige Led aftager suc- 
cessivt i Stprrelse og er temmelig rigeligt borstebesatte. 
The lateral plates of the 3rd abdominal segment are 
not produced posteriorly, but obtusely rounded. The 4th 
segment exhibits above a hunched projection. 
Eyes entirely wanting. 
The 1st pair of antennae (fig. 5 a) are very short, 
with the basal joint remarkably massive and swollen. The 
flagella are comparatively small and almost uniform in length; 
the principal flagellum has 6 articulations, the secondary 5. 
The 2nd pair of antennae (tig. 5 b) are likewise short, 
and robust in structure, with the penultimate joint of the 
peduncle compressed and forming posteriorly a broad, rounded 
lobe, to which are attached a series of plumous bristles 
and a number of short spines. The flagellum is compara- 
tively small, and composed of 6 articulations. 
The mandibles (fig. 5 c) are powerfully developed, 
with a small but distinct molar protuberance and a rela- 
tively very large palp. 
The 1st pair of maxillae (fig. 5 d). on the other hand 
are small, with the masticatory lobe short and obliquely 
truncate at the extremity, the palp comparatively slender, 
and the inner lobe rudimentary. 
The 2nd pair of maxillae (fig. 5 e) have the 2 lobes 
equal in size, but the inner more abundantly furnished 
with bristles. 
The maxillipeds (fig. 5 /) exhibit the usual structure. 
The outer masticatory lobe is comparatively short, and 
provided with long, curving bristles. The palp is well de- 
veloped, and lias the terminal articulation unguiform. 
The 2 anterior pairs of legs (fig. 5 g) have the hand 
inverted-pyriform and longer than the 3 preceding articula- 
tions taken together. The palmar margin — very oblique 
and occupying the greater part of the length of the hand 
— is limited behind by an obtuse corner only, bearing a 
single spine. 
The 2 succeeding pairs of legs (fig. 5 h) are of the 
usual form, with the 3rd articulation very large, and, like 
the succeeding, densely beset with bristles along the pos- 
terior margin. 
The 5th pair of legs (fig. 5 t) have, as in the other 
species belonging to this genus, the basal joint simple linear, 
not as in Phoxus lamelliform-dilated. The remaining ar- 
ticulations are, along both margins, densely beset with bristles, 
and here as elsewhere finely ciliated. 
The 6th pair of legs (fig. 5) are very elongate and 
rather powerful in structure, with the basal joint slendei’ly 
oval, tlie last articulation longer than the rest and furnished 
along one of the margins with a close series of rather long 
bristles. 
The last pair of legs (fig. 5 k) are exceedingly small, 
with the basal joint, as usual, lamelliform-dilated, but some- 
what irregular in shape, and a trifle broader than high. 
Its posterior margin is strongly arched and finely serrate, 
as also furnished with short bristles; the anterior forms 
below a projecting angle, beneath which it has a close 
series of long plumous bristles. The remaining articula- 
tions diminish successively in size, and are rather abun- 
dantly provided with bristles. 
