137 



Kiix. 21. 



22. 

 23. 



24. 

 2.'). 

 20. 

 27. 



Fdrciidi'ii ill' en Larvi.-, scft in'ilcnl'i;!. O it<' saiiiim-n- 



«itti' Øiuf: oc lift I'uklc Oio; o ' 1.<H' Par Kolen-; 



a' 2ilet Par Kok-rc: L Ovcrlalicn: .1/ Kiiidliakkiriu-: 



I Lt'versiekkc. 



Kn Tod at' Iste Par al' sainnic I.arw 



Va\ Foil af 2(let Par. 



lai Fod af lite Par. 



Va\ af di- ha<;enf<>r li^-rondi' Foilder. 



Fii af di' allcrba'rcr-'tt' Fodiler. 



l>i'n bajrrr Del af Lejrcniet af saiiiiue Larve, s^eet 



ovenfra. 



P.a<_'endeii. iiied F.asis af llaletraadeiie, af en ieldre 



Larve, ovenfra seet. 



Fit.'. 2L .Vnterior end nf a larva, seen from lielow. 0, eoni 

 pound eyes: oc. oeellu.s; a', 1st pair of antenna-; «'-. 

 2n<l pair of antenn;v; L, hibruni; J/, luamlililes; /. 

 liiliarv c;eca. 



22. A U-fr of tlie 1st pair of tlie sauia larva. 



23. A le'; of the 2nil pair. 



• 24. A le'.' of the 11th pair. 



25. One of the leg.s farther hack. 

 2(). One of tlie hindmost lejrs. 



27. Posti-rior |)art of the same larva, seen from ahove. 



28. I'oslerior end of an oMer larva, with the base fif the 

 eandal (ilaments, seen from abovi-. 



Tall. XIV. 

 Linmadia hniictdarif;, Lin. 



Fii;. 1. Fnldvoxent. :egl)aTenile I'^.veiuplar, seet fra hoiri- Side. 

 2. Saninie ovenfra. 

 ■■■ 3. Sannne iu'denfra. 



4. Kn kun lidt over 1 mm. lant' Intre, seet fra ven- 

 stre Side. 

 » 5. Kn anden nof;et storre Inge, fra samme Side. 

 ; (j. F.t F^xemplar, paa hvilket den forste Va'xtstrilie har 

 dannet sijr. seet fra venstre Side 



Tab. XV. 



Limnadia lenticidnris. Lin, 



I>vret li^tiende i sin natnrlijre Situs i hoire \"alvel. 

 \'enstre \'alvel bortta5j;et. 



Del I'orresti- Afsiiit af Letiemet seet fra venstreside, 

 stierkere for.storret. Aarerne er borttafjne. r Rost- 

 rum: n/" Fastlieftniiifisoreran; de sammensatte Oine; 

 or dit enkle Oie; a' Iste Par Fulere; L Overla-ben; 

 M Kindliakkerne: w' Iste I'ar Kj;ever: m' 2det Par 

 Kja'ver: i Tarmen; I Leveren; ms Insertionsareaen 

 for Skallens Lukkriuuskel ; c Forenden af Hjertet. 



Fii:. ]. 



3. 



4. 



5. 



(i. 



10. 

 II. 



12. 

 13. 



Fie. 1. 



IS ■ 



Samme Del, med liasis af Aarerne, seet ovenfra. 



Bojjstaverne som ]>aa foregaaende Fiirur. 



Sanniu- Di-1, uden .\arerne, seet nedenfra. l>oj;sta- 



verne som jiaa de 2 foregaaende Fiirurer. 



Kn l-"i)ler af l.sto Par. 



F^n af de ]iaa sannne fa-stede Ln.irtepa]>iller, sta-rkt 



forstorret. 



Overla-ben seet fra venstre Side. 



y.n Kindbakke, seet forfra. 



l-ji Del af den ventrale Flaile, nmiddelliart bair Mnnd 



aabninfren. M Stedc-t, hvor Kindbakkernes Tvi;;_'e- 



dele har li}rt;et: »»' Iste Par K.jiever; m' 2ilet Par 



Kjjever; oes Spiseroret. 



Imi Kja-ve af Iste Par, 



To af lie paa samme fa'Stede pigfonni<;e Borster, 



sta-rkt forstorret. 



Kn Kja-ve af 2<let Par. 



Samme Ki.eve sta-rkere forstorret. 



Tah. XVI. 

 Limnadia hnticidaris, Lin. 



l-:n .\are I'oler af 2ilet Par. 



'Pre af de til Forsiden af den ydre (iren fa-stedi- 



Pieire, sta-rki-re forstorret. 



G. 0. Sars Fnuna Sorveaix. 



Plate XIV. 

 Limnadia lentiadaris, Lin. 



Fii;. 1. Full grown, ovigerous speeinien. seen from the right 

 2. Same, ft-om above. 

 ; 3. Same, fri>m below, 



4, .V young one, only a little over I mm, in length, 

 seen from the left. 

 > 6. A somewhat larger young one, from the left. 



0. A specimen in whiih the tirst line of growth has 

 been formed, seen from the left. 



Plate XV. 



Limnadia lenficularis, Lin. 



Fig. 1. The :inimal, lying in its natural position in the right 

 valve: left valve removed. 



2. The anterior part of the body, seen from the left, 

 more highly magnilied. The oars are removed. 

 )-, rostrum; af. aflixing organ; O. eompound eyes; 

 oc, ocellus: a\ 1st pair of antenna- ; L. labruni; M. 

 mandililes; »i', 1st pair of maxilla-; m*, 2nd pair of 

 maxilla-: i. intestine: I, liver; ms. area of insertion 

 of the shell's adduetor musele; c, anterior end of 

 tlie heart, 



3. Same part, with the base of the oars, seen from 

 above. Lettering as in lig, 2. 



4. .'-^ame part, without the oars, ,seen from lielow. Let- 

 tering as in ligs. 2 and 3. 



! ."). An antenna of the 1st jiair. 



G. One of the olfactory papilla- on the same, highly 

 magnified. 



7, Labrum seen from the left. 



8. A mandible, seen from the front. 



',», Part of the vt-ntral surface, immediately behind the 

 oral aperture, M, place where the masticatory part 

 of the mandibles has been: m', 1st pair of niaxilhe: 

 «i^, 2nd pair of maxilhe; oes. lesojihagus. 

 - 10, A maxilla of the 1st pair. 



11, Two i>i" the spiniform bristles on the same, highly 

 magnitied, 



> 12. A maxilla of the 2nd pair, 



> 13. Same maxilla more highlv niairnilied. 



Plate XVJ, 

 Limnadia lenticidarifi, \.\n 



Fig. 1, .\n o;ir antinna of 2nil pair . 



2. Three of the spines atlixed to the froni of the mitei 

 ramus, more highlv maLrnilieil. 



