71 



stiller Haanden eller Saxen og er meget bevægeligt for- 

 bunden med det foregaa.ende Led. er enormt udviklet og 

 selv hengere end de 2 forega.aende Lcd tilsamnien samt i 

 sit basale Parti stærkt opsvulmet for at kunne optage de 

 stærke divergerende Muskelkhipper, der tjener til den be- 

 vegelige Fingers Adduction. og hvis Udspring frembringer 

 paa den øvre stærkt convexe Del af Haanden en eiendom- 

 melig facetteret Tegning. Fingrene er særdeles lange, længere 

 end Palmen, og ender i skarpe Spidser, der krydser hin- 

 anden, uaar Saxen er lukket. Den indre Kant at' begge 

 Fingre er regelmæssigt saugtakket (se Fig. 18) indtil hen- 

 imod Spidsen, som er ganske glat. Den ubevægelige Finger 

 er noget bredere end den bevægelige og har mnd Enden i 

 den indre Kant 2 korte Børster, i den ydre Kant 3 lig- 

 nende oa' ved Basis en enkelt saadan. 



2ndet Fodpar (Fig. 20) har den for Familien Apseu- 

 didæ eharacteristiske Bygning, der synes at gjøre dem for- 

 trinligt skikkede som Graveredskaber. De er noget hengere 

 end Iste Par, men forholdsvis smækrere og har de ydre 

 Led stærkt sammentrykte fra Siderne og bevæbnede med 

 stærke Torner. Basalleddet, som mangler ganske Exopodit, 

 er ikke mærkeligt indknebet ved Basis, men af nogenlunde 

 cylindrisk Form og næsten nøgent. 2det Led er vistnok 

 meget lidet, men dog langt tydligere fremtrædende end 

 samme paa Iste Par. 3die Led er omtrent halvt saa langt 

 som Basalleddet og foruden med en Del simple Børster 

 bevæbnet med en stærk Torn ved Enden i den indre Kant. 

 4de Led er meget betydelig hengere og bliver mod Enden 

 successivt bredere og mere sammentrykt: dets ydre Band 

 er glat og kun ved Spidsen bevæbnet med en stærk Torn; 

 den indre Band er derimod forsynet med en Kad af Børster 

 og i det forreste Parti desuden med 3 særdeles stærke 

 Torner, der er fæstede til særegne Afsatser. 5te Led er 

 ovalt. skLveformigt og bevæbnet med 8 stærke Torner, hvoraf 

 5 udgaar fra den indre Band. 2 fra den ydre og L fra 

 Spidsen. Denne sidste er betydelig større end de øvrige 

 og i den indre Kant fint tandet; den forestiller egentlig 

 Endeleddet (Dactylus). 



De 5 følgende Fodpar (Fig .21, 22. 24) er af meget 

 svagere Bygning og forestiller de egentlige Gangfødder. 

 De bestaar ligesom de 2 foregaaende Par af ;"> Led for- 

 uden den tynde og meget bevægelige Endeklo. Af disse 

 er Basalleddet omtrent saa langt som alle de øvrige til- 

 sammen. De 2 første Par har en lignende Retning som 

 Sax- og Gravefødderne. idet Endekloen vender nedad og 

 bagtil, medens de 3 sidste i Regelen har en modsat Bet- 

 ning. I sin Bygning viser de forøvrigt indbyrdes stor Over- 

 ensstemmelse, skjøndt der ved nøiere Undersøgelse lader 

 sig paa vise en Del mindre fremtrædende Differentser. De 

 2 forreste Par (se Fig. 21) er saaledes rigeligere børste- 

 besatte end de øvrige, og de 2 følgende i Fig. 22) udmærker 



eompressed from the sides, and on the lower, or inner, margin 

 lurnished with 4 strong bristles. The remaining part of 

 the leg, which represents the hand, or chela, and is very 

 rlexibly counected with the preceding joint, attains an 

 enormous development, and is longer even than the 2 pre- 

 cediiii; joints tåken together: moreover. it has the basal 

 part considerably swollen, for the reception of the widely 

 diverging fascicles of muscles that serve for the movable 

 fingers' adduction. and whose origin produces on the upper. 

 extremely convex portion of the hand a peculiar, areolated 

 appearance. The fingers are remarkably long — longer than 

 the palm — and terminate in acute points. that cross one 

 auother when the chela is shut. The inner margin of both 

 fingers is regularly serrate (see fig. 18) to within a short 

 distance from the point. which is quite smooth. The im- 

 mo vable tinger is somewhat broader than the movable one. 

 and has toward the extremity, on the inner margin. 2 

 short bristles. on the outer margin .'i. of a similar kind. and 

 at the base one such bristle. 



The 2nd pair of legs (fig. 20) exhibit the structure 

 characteristic of the family Apseudidæ, that would appear 

 to render them admirably adapted to serve as fossorial 

 organs. They are somewhat longer than the Ist pair. hut 

 comparatively more slender. and have the outer joints greatly 

 eompressed trom the sides, as also armed with strong spines. 

 The basal joint, on which the exopodite is entirely wanting. 

 does not appear much constricted at the hase. hut has a 

 well-nigh cylindrical form. and is almost naked. The 2nd 

 joint is indeed very small, but far more prominent than 

 that corresponding to it on the Ist pair. The 3rd joint 

 is about half as long as the basal joint, and has. exclusive 

 of a number of simple bristles. a strong spine at the ex- 

 tremity, on the inner margin. The 4th joint is very much 

 longer, and becomes toward the extremity gradually broader 

 and more eompressed: its outer margin is smooth. and at 

 the point armed only with a strong spine; the inner margin 

 has. on the other hand. a row of bristles. and on the an- 

 terior portion also .'! exceedingly long spines, attached to 

 special. ledge-like projections. The 5th joint is ovato-discoid, 

 and armed with 8 strong spines, 5 of which proceed trom 

 the inner margin. 2 from the outer. and 1 from the point. 

 The apical spine is considerably larger than the others, 

 and finely dentate along the inner margin: it represents. 

 strictly. the terminal joint (dactylus). 



The 5 succeeding pairs of legs (figs. 21. 22, 24) are 

 much more feeble in structure. and represent the true pereio- 

 poda. They consist, like the 2 preceding pairs, of 5 joints, 

 exclusive of the slender and very movable terminal claw. 

 Of these, the basal joint is well-nigh as long as all the 

 others tåken together. The 2 first pairs have the same 

 direction as the chehpeds and fossorial legs. the terminal 

 claw turning downward and backward. whereas the 3 last 

 tak<- as a rule the opposite direction. In their structure, 

 they exhibit for the rest very considerable agreement. though. 

 on closer examination, a number of slight deviations can 

 be shown. The 2 foremost pairs (see fig. 21) are. for in- 

 stance. more abundantly furnished with bristles than the 



