10. 
aH 
12. 
2 8 
TASER Se be 
O Anlegeet til Ginene; L Overleben; a', a? Folerne; 
Mp Mandibularpalpe; « Haleenden. 
Samme ‘2g seet nedenfra. Bogstaverne som paa 
foregaaende Figur. 
Et Embryo, nogen Tid efterat AZghuden er afkastet, 
seet ovenfra. O QMinene; a! 1ste Par Folere; a* 2det 
Par Folere; brp Anleg til Branchialfodder; pl Anleg 
til Svommefgdder; uw Haleenden. 
Samme Embryo seet fra yenstre Side. RK Pande- 
pladen; Z Overleben; Mp Mandibularpalpe; m', m? 
de 2 Par Kjever. De ovrige Bogstaver som paa fore- 
gaaende Figur. 
Et videre udviklet Embryo, seet fra hgire Side. 
staverne som paa foregaaende Figur. 
Unge feerdig til at slippe ud af Moderens Klekke- 
hule, seet fra hgire Side. Ms Insertionsareaen for 
Skallens Lukkemuskel; pla sidste Par, endnu ikke 
udviklede Svemmefedder; c', c? de 2 rudimentzere 
Halefodder. De ovrige Bogstaver som paa de 2 fore- 
gaaende Figurer. 
Bog- 
Tab. VI. 
Branchinecta paludosa (Miiller.) 
Fuldt udviklet Han, seet nedenfra. 
Samme fra venstre Side. 
Jigberende Hun, seet fra hgire Side. 
Samme oventra seet. 
Larve i sidste Stadium, seet fra venstre Side. 
Samme ovenfra seet. 
Hoyedet af en Unge i 1ste postlarvale Stadium, seet 
nedenfra. O de sammensatte Gine; o det enkle Gie; 
a' iste Par Folere; a? 2det Par Folere; L Oyerleben; 
M Kindbakkerne. 
En af 2det Par Folere af samme, steerkere forstorret. 
Hovedet af en fuldt udviklet Hun, seet nedenfra. 
m', m? de 2 Par Kjever. De ovrige Bogstaver som 
paa Fig. 7. 
Enden af Halen med Halepladerne, seet ovenfra. 
Genitalsegmenterne med den tilstodende Del af For- 
kroppen og Halen af en fuldt udviklet Han, seet fra 
venstre Side; e¢ Hjerte; t Testes; p ydre Kjonsved- 
heeng. 
Sperma-Celler ved meget steerk Forstgrrelse. 
Tab. VII. 
Branchinecta paludosa (Miller.) 
Forenden af en fuldt udyiklet Hun, med Overleben 
leftet op fra Kindbakkerne, seet nedenfra. O de 
sammensatte Mine; 0 det enkle Gie; a' 1ste Par Fo- 
lere; a? 2det Par Folere; LZ Overleben; M Kindbak- 
kerne; m' iste Par Kjever; m? 2det Par Kj:ever; 
p* Iste Par Branchialfodder. 
Hovedet af en fuldyoxen Han, seet forfra, Bogsta- 
_ yerne som paa foregaaende Figur. ‘ 
Overleeben (LZ), med den bagenfor liggende Chitin- 
hud. M Stedet hvyor Kindbakkernes Tyggedel har 
ligget; m' Stedet, hvor Iste Par Kjever har veeret 
feestede. 
En Kindbakke seet forfra. 
Sammes Tyggeflade steerkt forstorret. 
En Kjeve af iste Par. | Pixs! 
Fig. 8 
yet 
> 10. 
pA I 
» 12. 
Fig. 1. 
> 2. 
ches 
> 4. 
>» 6. 
> 6. 
SD ty Go 
> 8. 
+ 9, 
> 10. 
“egg 
o. Aa. 
Fig 1. 
& 
> 3. 
» 4, 
> «aby 
an 6S 
O, eyes in process of formation; Z, labrum; 
antenne; Mp, mandibular palpi; 
Same egg, seen from below. 
a‘, a*, 
u, end of the tail. 
Lettering as in fig. 7. 
An embryo, some time after the egg-skin is cast, 
seen from above. O, eyes; a', Ist pair of antenne; 
a*, 2nd pair of antennz; brp, rudiments of branchial 
legs; pl, rudiments of natatory legs; wu, end of tail. 
Same embryo, seen from the left. R, frontal lamina; 
DL, labrum; Mp, mandibular palpi; m', m*, the 2 pairs 
of maxille. The rest of the lettering as in fig. 9. 
A more deyeloped embryo, seen from the right. 
Lettering as in fig. 10. 
Young one ready to emerge from the mothér's incuba- 
tory cayity, seen from the right. Ms, area of inser- 
tion of the adductor muscle of the shell; pla, last 
pair of the not yet developed natatory legs; c', ¢?, 
the 2 rudimentary caudal legs. The rest of the let- 
tering as in the 2 preceding figures. 
- Plate VI. 
Branchinecta paludosa, (Miiller.) 
Fully developed male, seen from below. 
Same, from the left. 
Ovigerous female, seen from the right. 
Same, seen from aboye. 
Larva in the last stage, seen from the left. 
Same, seen from above. 
Head of a young one in the 1st post-larval stage, seen 
from below. O, compound eyes; 0, ocellus; a‘, ist 
pair of antennie; a*, 2nd pair of antenne; ZL, labrum; 
M, mandibles.. 
One of the 2nd pair of antenne of the same, more 
highly magnified. 
Head of a fully-developed female, seen from below. 
m*, m*, the 2 pairs of maxilla. The rest of the let- 
tering as in fig. 7. 
End of the tail, with the caudal lamellz, seen from 
above. 
Genital segments with the adjacent part of the an- 
terior part of the body and the tail of a fully-deve- 
loped male, seen from the left. c, heart; ¢, testes; 
p, external sexual appendage. 
Sperm cells, very highly magnified. 
Plate VIL. 
Branchinecta paludosa (Miller.) 
Anterior end of a fully-developed female, with the 
labrum raised from the mandibles, seen from below. 
O, compound eyes; 0, ocellus; a‘, 1st pair of antenne; 
L, \abrum; M, mandibles; m', 1st pair of maxille; 
m*, 2nd pair of maxille; p', ist pair of branchial 
legs. 
“Head of a full-grown male, seen from the front. 
Lettering as in fig. 1. 
Labrum (Z), with the chitinous skin lying behind it, 
M, place where the masticatory part of the mandi- 
bles has been; m', place where the 1st pair of max- 
ille have been attached. 
A mandible, seen from the front. 
Masticatory surface of the same, highly magnified. 
A maxilla of the 1st pair. 
