133 



Anl.i'siS'i't til OiiiéiH'; L Overhol x-u: a ', n ' FoUtik'; 

 Mp Manililnilarpalin-: u Haleeudcii. 

 Fiv. S. Siuiinu' J-"fr sfut iHilenfrn. Bn<;stavenu' i^om ]iaa 

 fort\s;aai'iick' Fitrur. 

 9. Ft Fiubvyu. iiosi-en Till cftca-at .lOirhuiU'ii er afkastot, 

 set't ovenfra. O Oinene: «' li^te Par Folere: a" "iilet 

 Par Folere; hrp Anhcg til ISranchialfocliler; pi Aiil:é'_' 

 til Svoimnefuilder: « Haleenden. 



10. .Saimue Enibrvo seet fra venstre Side. i> Pande- 

 pladen: L ()verhe))i'u: Mp ilandilmlarpalpe; j/f', m- 

 de 2 Par Kja'ver. I>e ovritre Bogstaver pom paa tVire- 

 gaaende Figur. 



11. Ft ^^dere udviklet Kinbrvn, ,«eet fra hoire Side. Bog- 

 s^taverne sum paa fciregaaende Figur. 



> 12. Unge færdig til at slipjie ud af ^Inderens KUekke- 

 hule, seet fra hoire Side. Ms hisertiunsareaen for 

 Skallens Lukkeumskel ; plx sidste Par. rudnu ikke 

 udvikiede Svonimefodder; c', c' de 2 radinient;eri' 

 Ilalefodder. De ovrige Bogstaver soru paa de 2 fore- 

 aaaende Figurer. 



Tab. \l. 

 Branchinecta ixihulom iliiller. 



Fig. 1. Fulilt udviklet Han. seet nedenfra, 



s 2. Samme fra venstre Siik-. 



1 3. Æglnerende Hun, seet fra lioiri' Side. 



4. Samiue ovenfra seet. 



5. Larve i sidste Stadium, seet fra venstre Side. 

 ■■ (j. Samuie ovenfra seet. 



7. Hovedet af en Unge i Iste postlarvale Stadium, seet 

 neilenlia. O de sanuuensatte Øine; det enkle (tie: 

 a^ Iste Par Folere; «^ 2det Par Folere : L Overliiln^n: 

 M Kindbakkerne. 



8. y.xi af 2(let Par Folere af samme, stanicert' fi.irstoiret. 



9. Hoveilet af en fuMt udviklet Hun, sei't nedenfra. 

 »;»', m^ de 2 Par Kj;ever. De ovrige Bogstavt'r som 

 paa Fig. 7. 



-' 10. Knden af Halen meil Halei>laderne. seet ovenfra. 



11. Genitalsegmenterne med den tilstodende Del af For- 

 kroppen og Halen af en fuldt ndviklet Hån, seet fra 

 venstre Side: c Hjerte: t Testes; p ydre Kjonsveil- 

 hæug. 

 > 12. Spenua-Celler ved meget stierk Forstorrelse. 



Tal). Vn. 

 Branchinecta pcdudom lAKiller. i 



Flg. 1. Foreiideii af i'n fuldt udviklet Hun. ined Overla-lien 

 loftet op fra Kindliakkerne, seet nedenfra. O de 

 sammensatte Øine; o det enkle Oie: n' Iste Par Fo- 

 lere: a- 2det Par Folere; L Overla'l)eu; Jf Kiuilliak- 

 kerne; W( ' Iste Par Kj:over: ?»'' 2det Par Kj.ever; 

 /) ' I'^te Par Braneliialfodder. 



2. Hovedet af en fuldvoxen Han, seet forfra. Bogsta- 

 verni' som jiaa foregaaende Figur. 



3. Overl.elieu I^ . med den liagenfor liggende Cliitin- 

 hud. M Stedet livor Kindbakkernes 'J'yggedel bar 

 ligget: »/ ' Stedet, bvur Iste Par Kja'ver bar v;rret 

 fæstede. 



4. En Kindliakke seet forfra. 



5. Sammes Tyggefiade stærkt forstorret. 

 ti. En Kj:i.-ve af Iste Par. ^ 



0, eyes iu process of formation; i, labrum: o', n". 

 antenna': Mp. mandilmlar ]ialpi; ii. end of tlie tail. 

 Fig. 8. Same egg, seen from bi-low. Lettering as in lig. 7. 



0. An embryo, some time after tbe egir-skin is east, 

 seen from aljove. 0. eyes: a\ 1st pair of anteniue; 

 a'\ 2nd pair of antenuas brp, rudiments of branchial 

 legs; pl. rudiments of natatory legs; u. end of tail. 

 JO. Same embryo. Seen from the left. R. frontal lamina; 

 L, labrum: ili/;. mandiliulav p:dpi; jji './«', tbe 2 pairs 

 of maxilhe. The rest of the lettering as in lig. !i. 



IL .\ more developed endirvo, seen from the right. 

 Lettering as iu fig. 10. 



12. Ymmg one ready to emerge from the mother's incuba- 

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

 tion of till' adductor nmscle of the shell; plx, last 

 pair of tbi' not yet developed natatory legs; c', c", 

 the 2 rudimentary caudal legs. The rest of the let- 

 tering as in the 2 preceding ligures. 



Plate VI. 

 Branchinecta paludosa, Aialler. 



Fig. 1. Fully develojH'd male. sei'U from below. 

 2. Same, from the left. 



'■i. Ovigerous female, seen from the right. 

 ' 4. Same, seen from above. 



■'l. T,arva in tin' last stage, seen from the left, 

 (i. Same, seen from above. 



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

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

 pair of antenme; a', 2nil pair of antennæ: L, labrum; 

 M. mandibles. 



8 ( »ne of the 2nd pair of antenme of the same, more 

 highly magnirii'd 



!l. Head of a fully developed female, seen from below. 



)»', m', the 2 p;iirs of maxilbe. The rest of the let 



tering as in tig 7. 

 lU. End of tbe tail, with the caudal lamella\ seen from 



above. 

 11. (b'lutal segments with the adjacent part of the an 



terior part of the Ijody and the tail of a fully-devi'- 



loped male, .seen from the left. c. heart: t. testes: 



p. external sexual appendage, 

 i. 12. Sperm cells, very highly magnitied. 



Plate YII. 

 Branchinecta paluclosa [AluUer.' 



Fig 1. Anterior eud of a fully developeil female, with the 

 labnmi raised from the mandibles, seen from below. 

 O, eominaiuil eyes; o, ocellus: a', 1st pair of antenna-; 

 L, labrum; J/, mandibk's; )»', 1st pair of maxilhe; 

 m-, 2nd jiair of maxilhc; /)', 1st pair of branchial 



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

 lA'ttering as iu fig. 1. 

 i. Labrum L . with the chitinous skin lying behind it. 

 M. place wbere the masticatory part of the maudi 

 bles has been: ;*(', jilace where the 1st pair of ui;ix 

 ilUe have l)een attached. 

 4. A mandible, seen from the front. 

 : o. Masticatory surface of the same, highly magnitied. 

 » 6. A maxilla of the 1st pair. 



