133 



O Anla'gijft til (lineiii': L OvCThcbcii; «'. n' Kolriiif; 

 Mj) Mandilnihirpuliic: « llali'cnrlpii. 

 Kifr. S. Saiiiiue -Ejr sct't iiciU-nfni. F.uj.'stavcriu' som jiaa 

 fori'saat'mlc Fijrur. 



> 9. F-t Kiiibryo, nogeii Tid efterat ,l>_'luiiten or afkastct, 

 sect oveiifra. Øiiicne: a' Iste Par Folen': a- 2ilct 

 Par Følere; brp Anheg til Branchialfodder: j)l Anla-j.' 

 tn Svoniniefodder; u Ilaleeiidon. 



» 10. Samme Kiiil)ryo sect fra venstre Side. 7i' Paiide 

 pladen: L Overheheii; Mp Mandibularpaliie; jm ', )»- 

 de 2 Par Ivj;ever. I)e ()vri.u:e Bo<jstaver sum paa fore- 

 <»aaen<le Fiirur. 

 11. Ft videre udviklet Fmbryo, seet fra hoire Side. I'.ol' 

 slaverne som jiaa forefraaendc Fi>;ur. 



f 12. I'nge færdif; til at slippe iid af M.xlerens Khekke- 

 hule, seet fra hoire Siile. Ms Insertionsareaen for 

 Skallens Lukkemuskel ; plx sidstc Par, endnu ikke 

 udviklede Svuinmefodder; c', c' de 2 I'lulinientjere 

 IlaU'fodder. De ovriire Boirstaver soni paa dc 2 fore- 

 ,s;aaen<le Fitiurer. 



Tab. VI. 

 Branchinecta imludosa MrdUr. 



Fii.'. 1. Fuldt iidxilclct llan. seet neclenfra. 



2. ."^aniine fra venstre Side. 



3. /Eiiba'renile Hun, sei't fra hoire .*^iile. 



4. Samme ovenfra s-'eet. 



6. I^arve i sidste Stadium, .seet fra venstre Siile. 

 0. Samme (jvenfra seet. 



7. Ilo\cdct af en I'nire i Iste postlarvale Stadium, seet 

 nedenfra. O de sammensatte Øine; o det eid<le Øie: 

 a' Iste Par Fulere; a" 2det ParFolere; L Overhelien: 

 M Kindhakkerne. 



8. Fn af 2det I'ar Folere af samme, sta'rkere forsturret. 



!i. Hovedet af en fuldt udviklet Hun, seet nedenfra. 

 )H ', »)- de 2 Par Kj;ever. He ovri.L'e l!oirsta\er soni 

 paa V\ii. 7. 

 10. linden af Halen med Halephidernr. seet ovenfra. 



' 11. Genitalsegmenterne med den tilstodende Del af For- 

 kroppen 0» Halen af en fuldt udviklet Han, seet fra 

 venstre Side; e Hjerte; t Testes; p ydre Kjonsved 

 luen^'. 

 12. Sperma-Celler veil niejret sta-rk Forstorrelse. 



0, eyes in [iroeess of formation; L, lahrum: a'. «-, 

 antenna-; Mp. mandibular jialpi: «, end of the tail. 

 Fi>r. 8. Sanii- ej;^, seen from below. Ix'ttering as in tijr. 7. 



> n. An eml)ryo, some time after the egg-skin is east, 



seen from above. 0, eyes; o', 1st pair of antennie; 

 a^ 2nd pair of antenna-: brp, rudiments of liranehial 

 legs; pi. ru'liments of natatory legs; u, end of tail. 



> 10. Same embryo, seen from the left. R, frontal lamina; 



L, labrmn: Mp. mandibular palpi; m', m', the 2 pairs 

 of maxillie. The rest of the lettering as in tig. '.1. 



■■ 11. .\ more cleveloped embryo, seen from the right. 

 Lettering as in tig. 10. 



» 12. Young one ready to emerge from the mother's ineuba 

 tory cavity, seen from the right. Ms. area of inser- 

 tion (jf till' ad<luetor uuisele of the shell; plx, last 

 pair (pf the not yet developed natatory legs; e', f', 

 the 2 rudimentary caudal legs. The rest of the let 

 tering as in the 2 jireceding lisrures. 



Plate VI. 

 Branchmecfa palitdosa, Mtiiier. 



Fig. 1. I'ully developed male, seen from below. 

 2. Same, from the left. 

 ' 'A. Ovigerous female, seen from the right. 



4, Same, seen from above. 

 " i>. Larva in the last stage, seen from the left. 

 <i. .Same, seen from above. 



7. Head of a young one in the 1st post-larval stage, seen 

 from below. O, compound eyes; o. ocellus; a', 1st 

 pair of antemue; a', 2nd j.air of antenn;e; i, labrum; 

 .1/, mandililes. 

 8 One of tlu' 2nd ]iair of antenna- of the same, more 

 highly magnilied 



> '.). Head of a fully develoi)ed female, seen from below. 



w', »«-, the 2 i)airs of maxilla-. The rest of the let 

 tering as in tig 7. 



> 10. End of the tail, witli the caud;d lamelhe, seen from 



aliove. 



> 11. (ienital segments with the adjacent i)art of the an- 



terior part of the body and the tail of a fully deve 

 lopeil male, seen from the left. c. heart; t. testes; 

 p. external sexual appendage. 

 ' 12. Sperm cills. very highly magnifieil. 



Tal). VII. 

 Branchinecta paludosa Mtiiler.) 



Fig. 1. Foreiideu af en fuldt udviklet I bin. nu-d Overla-ben 

 loftet op fra Kimlbakkerne, siet nedenfra. O <le 

 sannnensatte Oine; det enkle Øie; a' Iste Par Fo- 

 lere; a- 2del Par Folere; L Overlaben; M Kindbak- 

 kenie; Hi' Iste Par Kjæver; »i' 2det Par Kja-ver; 

 /) ' Iste Par J>ranchiall'odder. 



2. Hovedet af en fuldvoxen llan, sei-t forfra. liogsta- 

 verne som |iaa foregaaende Figur. 



3. Ilverla-beu L. med den bagenfor liggende C'hitin- 

 hud. .1/ Stedet hvor Kindbakkernes Tyggedel liar 

 ligget; »( ' Steilet, hvor Iste Par Kja-ver h;n- va-ret 

 fiestede. 



4. Kn Kindbakke seet forfra. 



o. Sanunes Tyggefiade st.-erkt forstorret. 

 > 6. Fn Kjave af Iste Par. 



Plate VII. 

 Branchinecta paludosa Mdller. 



I"ig 1. Anterior end of a fully developed female, with the 

 labrum raised from the mamlibles. seen frr>m below. 

 O, compound eyes; 0, ocellus; a', 1st pair of antenna-; 

 L. labrnm; M, mandibles; m', 1st pair of maxilla-; 

 »(-, 2nd pair of maxilla-; /)', 1st pair of branchial 

 legs. 



> 2. Head of a full grown male, seen from the front. 



Lettering as in tig. I. 

 'A. Labrum L . with tin- chitinous skin lying behind it, 

 M. place wlu-re the masticatory part of the mau'li 

 bles has been; m', place when- tin- 1st pair of max- 

 illa- have been attacln-il. 



> 4. .V mandible, sei-u from the front, 



•' 5, Masticatory surface of the same, highly maL'nilied. 

 t). .\ maxilla of the 1st pair. 



