100 
Lap sig indleddet ved Basis af den indre, saaledes at begge 
egentlig forestiller 2 paa liinanden folgende Endeled. 
Kjffiveibdderne (Fig. 13). der mere eller mindre fuld- 
stmudigt dmkkev de ovrige Munddele ncdad og ved Basis 
stader feet op mod liinanden (se Fig. 3), bestaar som ssed- 
vanligt af en noget tykkere Basaldel, en med denne be- 
vaegeligt forbunden, indad boiet 5-leddet Palpe og en til 
Ydersiden af Basaldelen festet pladeformig Epignatb. Ba- 
saldelen gaar fortil ud i en temmelig stor tnngedannet, i 
Kanterne haaret Tyggelap, der ved Hjselp af 3 tvkke, 
krogformige Tomer er ligosom hajgtet sammen med den 
tilsvarende paa den anden Side. Af Palpens Led er det 
Iste ganske kort. det 3die det storste og ligesom de avrige 
i den indre Kant tet borstebesat; sidsteLed er ineget lidet. 
knudeformigt og ved Spidsen forsynet med en Del lignende 
Burster, men mangier ganske nogen virkelig Endeklo. Epig- 
nathen danner en oval fortilrettet Blade af temmelig fast 
Consistens og uden Borster i Kanterne. Den synes kun at 
vaere lidet bevregelig og Lingerer alene som et Slags Daek- 
plade. Ved Basis af Kjsevefadderne Andes paa liver Side 
en noget uregelmsessigt formet Chitinplade, hvis inderste Del 
danner en nsesten halvcirkelformig, i den ene Kant cilieret 
Lap. Disse Basalplader maa nsermest betragtes som Ster- 
naldelene af et sserskilt Segment. 
Fodderne er tilstede i det normale Antal, nemlig 7 
Far. svarende til de 7 Forkropssegmenter ; men de 4 forreste 
Par skiller sig i sit TJdseende paa en ineget paafaldende 
Maade fra de 3 bagerste og synes i sin Function snarere 
at maatte betragtes som Hjselperedskaber til Munddelene. 
De er derfor ogsaa, uligt de folgende Par. fortdstrakte og 
boiede ind mod M unden. 
Iste Fodpar (Fig. 14) er det korteste af alle og ogsaa 
det, som saavel i Bygning som Stilling mest ligner Kjmve- 
todderne. Det udspringer til liver Side af disse fra den 
indre Flade at de tungeformigt udlobende Epimerer af Iste 
Forkropssegment og er ialmindeligbed tset trykket op mod 
Hovedets Underside. Det bestaar ligesom Kjtevefpdderne af 
on ti-leddet, noget indadkrummet og i den indre Kant tret 
borstebesat Stamme, men mangier ganske Basalpladen. Af 
Leddene er det Iste storst og danner med Resten af Stam- 
men en stark albuformig Boining. Nsestsidste Led er ad- 
skilligt laengere end det foregaaende og stserkt afsmalnende 
mod Enden. Sidste Led er som paa Kjsevefodderne sser- 
deles lidet, knudeformigt og uden Endeklo. 
De 3 folgende Fodpar er indbyrdes af ens Udseende 
og tiltager jevnt i Laengde bagtil. De er (se Fig. 15) sair- 
deles spinkle, i den ydre Kant lint knudrede og langs den 
indre Kant forsynede med en regelimessig Rad a lange og 
tynde Borster. De bestaar tilsyneladende kun af 5 Led, 
hvoraf de 3 yderste er stierkt forlamgede; men i Spidsen 
bearing 3 coarsely ciliated bristles. On closer examination, 
the outer lobule is found to be jointed on to the base of 
the inner; and lienee they strictly constitute 2 successively 
terminal joints. 
The maxillipeds (lig. 13), which cover below, more or 
less completely, the other oral appendages, and at the base 
are contiguous (see tig. 3), consist as usual of a thickish 
basal part, a five-jointed palp movably connected therewith, 
and a lamelliform epignatb attached to the outer side of 
the basal part. Anteriorly, the basal part protends as a 
rather large linguiform masticatory lobe, clothed with hair 
along the edges, which, by means of 3 thick, unguiform 
spines, is, as it were, hooked to the corresponding 
lobe on the opposite side. Of the joints of the palp, 
the 1st is quite short, the 3rd the largest, and, like the 
others, densely beset with bristles along the inner edge; 
the last joint is exceedingly small, tuberculiform. and. 
at the point, furnished with a number of similar bristles, 
but has no trace whatever of a true terminal claw. The 
epignatb constitutes an oval, anteriorly directed plate, 
rather firm in consistence, and without bristles along the 
edges. It would appear to be but slightly movable, serv- 
ing exclusively as a kind of covering-plate. At the base 
ol the maxillipeds, is seen, on either side, a somewhat irreg- 
ularly formed chitinous plate, the inner portion of which 
constitutes an almost semicircular lobe, ciliated on one of 
the edges. These basal plates should properly, we think, lie 
regarded as the sternal portions ol a separate segment. 
The legs are present in the usual number, viz. 7 pairs, 
corresponding to the 7 segments belonging to the anterior 
division; but the 4 anterior pairs differ very conspicuously 
in appearance from the 3 posterior ones, their function 
being, it would seem, to serve as accessory parts to the 
oral appendages. They are, therefore — unlike the succeeding 
pairs — directed anteriorly, and bent in towards the mouth. 
The 1st pair of legs (fig. 14) are the shortest of all, 
and moreover, that which in structure and position present- 
greatest resemblance to the maxillipeds. They originate on 
either side ol those appendages, springing from the inner 
surface of the liuguiform-projecting epimera of the 1st thoracic 
segment, and are, as a rule, pressed close in to the under- 
side of the head. Like the maxillipeds, they consist of a 
six-jointed, somewhat incurving, ' and. along the inner edge, 
densely bristle-beset stem, but the basal plate is entirely 
wanting. Of the joints, the 1st is the largest, and constitutes, 
together with the remaining portion of the stem, a strong, 
geniculate flexure. The penultimate joint is considerably 
longer than the preceding, and tapers abruptly towards the 
end. The last joint is, like that on the maxillipeds. ex- 
ceedingly short, tuberculiform. and without any terminal 
claw. 
The succeeding 3 pairs of legs exhibit a uniform ap- 
pearance and gradual increase in length posteriorly. They 
are (see fig. 15) remarkably slender, finely tubercular along 
the outer edge, and on the inner furnished with a regular 
series of long and slender bristles. They consist apparently 
of hut 5 joints, of which the outermost 3 are greatly pro- 
