isl is 
_ aabningen. 
Forenden af en Larve, seet nedenfra. O de sammen- 
satte Gine; oc det enkle Mie; a‘ 1Iste Par Folere; 
a* 2det Par Folere; LZ Overleeben; M Kindbakkerne; 
l Leversekke. 
En Fod af iste Par af samme Larve 
En Fod af 2det Par. 
En Fod af i1te Par. 
En af de bagenfor liggende Fodder. 
En af de allerbagerste Fodder. 
Den bagre Del af Legemet af samme Larve, seet 
ovenfra. 
Bagenden, med Basis af Haletraadene, af en eeldre 
Larve, oventra seet. 
Tab. XIV. 
Limnadia lenticularis, (Lin.) 
Fuldyoxent, «egbzerende Exemplar, seet fra hgire Side. 
Samme ovenfra. 
Samme nedenfra. 
En kun lidt over 1 mm. lang Unge, seet fra ven- 
stre Side. 
En anden noget storre Unge, fra samme Side. 
Et Exemplar, paa hvilket den forste Veextstribe har 
dannet -sig, seet fra venstre Side. 
Tab. XV. 
Limnadia lenticularis, (Lin.) 
Dyret liggende i sin naturlige Situs i hoire Valvel. 
Venstre Valvel borttaget. 
Det forreste Afsnit af Legemet seet fra venstre Side, 
steerkere forstorret. Aarerne er borttagne. r Rost- 
rum; af Fastheftningsorgan; O de sammensatte Gine; 
oc det enkle Mie; a‘ Iste Par Folere; LZ Overleben; 
M Kindbakkerne; m' 1ste Par Kjzever; m* 2det Par 
Kjeever; i Tarmen; J Leveren; ms Insertionsareaen 
for Skallens Lukkemuskel; ¢ Forenden af Hjertet. 
Samme Del, med Basis af Aarerne, seet ovenfra. 
Bogstaverne som paa foregaaende Figur. 
. Samme Del, uden Aarerne, seet nedenfra. Bogsta- 
verne som paa de 2 foregaaende Figurer. 
En Foler af iste Par. 
En af de paa samme festede Lugtepapiller, steerkt 
forstorret. 
Overleben seet fra venstre Side. 
En Kindbakke, seet forfra. 
En Del af den ventrale Flade, umiddelbart bag Mund- 
M Stedet, hvor Kindbakkernes Tygge- 
dele har ligget; m* 1ste Par Kjzever; 
Kjeever; oes Spiseroret. 
En Kjeve af 1ste Par. 
To af de paa samme feestede pigtoninige Borster, 
m?® 2det Par 
_steerkt forstorret. - 
En Kjeve af 2det Par. 
Samme Kjeve sterkere forstorret. 
Tab. XVI. 
_ Limnadia lenticularis, (Lin.) 
En Aare (Foler af 2det Par). 
Tre af de til Forsden at den yare Gren festede 
Pigge, steerkere forstorret. 
G. 0. Sars Fauna Norvegiz. 
137 
Fig. 21 
» 22. 
>» 238. 
>» 24, 
>» 26. 
>» 26, 
>» 27. 
» 28. 
Fig. 1. 
Ko ZB 
+> BS: 
we 7s 
> 6, 
+ 16; 
Fig. 1. 
int jae 
are 
>» 4. 
1 OF 
4 & 
ae Ts 
2 18s 
» 9 
>» 10. 
ssh 
» 12. 
> 13. 
Fig. 1. 
rae > 
Anterior end of a larva, seen from below. O, com- 
pound eyes; oc, ocellus; a‘, Ist pair of antenne; a’, 
2nd pair of antennze; LZ, labrum; M, mandibles; /, 
biliary ceca. 
A leg of the Ist pair of the sama larva, 
A leg of the 2nd pair. 
A leg of the 11th pair. 
One of the legs farther back. 
One of the hindmost legs. 
Posterior part of the same larva, seen from above. 
Posterior end of an older larva, with the base of the 
caudal filaments, seen from above. 
Plate XIV. 
Limnadia lenticularis, (Lin. 
Full-grown, ovigerous specimen, seen from the right 
Same, from above. 
Same, from below. 
A young one, only a little over 1 mm. in length, 
seen from the left. 
A somewhat larger young one, from the left. 
A specimen in which the first line of growth has 
been formed, seen from the left. 
Plate XV. 
Limnadia lenticularis, (Lin.) 
The animal, lying in its natural position in the right 
valve: left valve removed. 
The anterior part of the body, seen from the left, 
more highly magnified. The oars are removed. 
r, rostrum; af, affixing organ; QO, compound eyes; 
oc, ocellus; a', Ist pair of antenne; Z, labrum; M, 
mandibles; m*, Ist pair of maxille; m*, 2nd pair of 
maxille; i, intestine; J, liver; ms, area of insertion 
of the shell's adductor muscle; c, anterior end of 
the heart. 
Same part, with the base of the oars, seen from 
above. Lettering as in fig. 2. 
Same part, without the oars, seen from below. Let- 
tering as in figs. 2 and 3. 
An antenna of the Ist pair. 
One of the olfactory papille on the same,. highly 
magnified. 
Labrum seen from the left. 
A mandible, seen from the front. 
Part of the ventral surface, immediately behind the 
oral aperture. M, place where the masticatory part 
of the mandibles has been; m', 1st pair of maxille; 
m*, 2nd pair of maxille; 0¢8, cesophagus. 
A maxilla of the 1st pair. 
Two of the spiniform bristles on the same, highly 
magnified. 
A maxilla of the 2nd pair. 
‘Same maxilla more highly magnified. 
Plate XVI 
_ Limnadia lenticularis, Lin.) 
An oar (antenna of 2nd pair). 
Three of the spines affixed to the front of the outer 
ramus, more highly magnified. : 
