IMIAWNH I'I1(»M I.AKK 'I ANOAN VIKA. 427 



(J;i,iiilc;in l;ir\ii l,li;ii, 1 Iimvc, ever iiiiit, vvit,li, ;inii in so Hir is scry 

 (lin(U(Mit tVoiii t;li(3 eii,rli<!Ht Ktago of daridlna n'dotica dohorilx-il \yy 

 I'rof. D.idjiy iiii'Icr llio tiiirno of I'/azoHa. 



Tlic b'lujUi, f)f 1,li(! ti,\M'v\\\\i'.n cxMiiiiiH'd, nif;i,siii('(l fr-om IIh; 

 Miitciior (m1<,'o of th(; cycis to IIk; (mkI of tin; oiiKhiJ jthitc!, is only 

 O'TO mill., iiiid t,li(! pi<;s<!iit liirvji Ih Jic(r(ji-diiigly not (ivon half iis 

 liii-p! as tlio ()arli<!st stag<! of darulAii.fi nilotica, tlio lotigtli of 

 wliicli, ao(rording to I'rof. hndiiy, is 1"70 mm. If wo iniJigiiKj tlio 

 larva (miiIihI up in its origiiiiil cmlayonir! :i1titiid<', wo rruiy 

 !ip|)ro\iinii,t<!ly dctciiniiKf ilio Icn^'tli of tlio ovum from wliidi it 

 ii!i.soHf;apod to lijiv(i Itooii ()'25 mm. hy ji width of O-Jfi mm. 'I'his 

 a<,'re(;.s protty woll with tlu; im!iisiir(;m«;nts of tin; ova in lAiiiiio- 

 rarldiii,a HplnipcH f^ivori hy Dr*. (yidmiin, and jih th<! form of tlio 

 aiitonniii .scale in tlio jaosont larv.'i, }i<^i<;(;k hcsttor with that in this 

 specii'H tiiiin with that in any (jther of tlm Tangjuiyika prawns, 

 1 sini l«;fl to the siif^gestion that it porJiaps miglit lie reffjral>io 

 to fj. spinipes, of which indeed an adult Kpocimori was found in 

 one of tlm four KJiiiiphs in which the present liiiva; occurred. 



The f/aufrfd form of the Ijody (PI. I. VI I. (igs. 1 <t 2) is 

 mod(M'ately slendei', with tin; '.uitirior division srnnewhat liimiil 

 Mild roiind(!d oval in shiipe. 



The carapaa', is evenly (convex :i,l)ov(! and slif^litly emaif^injitc 

 hehiiid in the middle, leiiving the <loisal part of the hindmost 

 sef^ment of tlu; trunk uncovered. At the iintf-ro-latend f;oriiers si 

 well defined spine is present fxiintinj^ ohli(|uely outwiirds (see 

 fig. 1), The JinterioT' piii't of the caiMfuicf! is liadly defined, jmd 

 no true ro.strum could he detected, though n, narrow stripe is 

 seen e.\t6nding forwaidsin the middle', without, however, forming 

 any projection in front of the cycH. The latter are rathe-r im- 

 perfe(;tly d(!veloped, as compai-ed with these orgnns in most otliei- 

 (Jiiridean larva3. They are ap[iarent]y (jiiife irnino}*ile, heing 

 contigiiouH at the hase inside, and do not project heyond tlie 

 liiteral faces of the carapace. Tlie corneal p;irt is only faintly 

 defined and contain.s a wnnparatively sniidl juid iireguhir 

 nifiss of pigment, fiom which the visuiil elements radi;ite in the 

 form of slight stripes, no corneal facets heing sis yet visihle. 



Iiniiiediately lieneath the front parts of the eyes a .semilunar 

 lolie occurs (fig. 3, ftc), and within this lohe tlie Hvinjih', ey« 

 (ocellus) may he faintly traced, for which lea.son it is liere 

 termed the ocellar lohe. 



Of apjtf'/iidwjeH only tlie two pairs of antenna; and the oral 

 ])arts are as yet present, and all these; apixmdages exhibit a veiy 

 simple structure, lieing filleil up with indifl'eient cells. Especially 

 are the mandibles and maxilla; remarkable for their imperfect 

 development, and inrleed these parts seem to be quite unfit for 

 any true mastication, the larva in all probability subsi.sting in 

 this stage exclusively on the nutritive yolk, of which a con- 

 siderable quantif3' is .seen accumulateil within the anterior part 

 of tiie bofly. 



'I'hc relative fto^ition of the appendages is best seen on viewing 



