430 
minor, capitulo (d) e majore parte conslitatus, 
longe setoso, et appendice dis^itiformi (e) longa, 
stylifoiiPii aiicto. Articulus qiiartus (4) in pedi- 
bus branchialibLis (fig. 7) gracilis, siniplex, lan- 
ceolatns, laminaceiis , margiiie longe setosas, in pe- 
dibus copulatoriis (lig. 5, 6) vero validior, teres, 
ex articulo basali brevi, crasso, et ramis binis 
(f) bamatis i. curvis apice brevi-setosis. Pars pedis 
externa e lamina longa, triangulari (g), medio si- 
nnata, snperius acuminata, inferne obtusa, raar- 
gine longe setosa; inter quara et articulum basa- 
lem internam processus teres (b), erectus, digiti- 
tbrmis. — Cauda (fig. 1 F. , fig. 4) brevis, obliqiie 
truncata, bifida, aculeis inaequalibus 13 — 14 utrin- 
que armata, superne cirris binis prcedita, inferne 
in spinam recurvam producta, addila ulrinque 
subtus appendice mobili, uncinnata, loDgiore. 
Hab. in paludibus terrse CafFrorum Natalen- 
sium, unde specimina duo retulit J. Wahlberg. 
Tab. III, fig. 1, Cyzicum australera repraesentat , detracta vah^a 
sinistra — fig. 2, caput, antice; — fig. 3 valvam sinistram; 
— fig. 4 caudam; — fig, 5 pedem primum ^ ; — fig. . 6 articulos 
infimos pedis secimdi ^; — fig. 7 pedem quartum. 
Li m n et is n. g. 
Limnadiffi et Cyzico afllne. Antciinae interuce biarticiilatae ; cauda 
brevis, truncata, appendicibiis mobilibus facie iaferiore de- 
stituta. 
L. W a b 1 b e r g i i n. sp, 
Tab. W. 
De ser. femince. Caput (fig. 2, 3, a, fig. 6) 
validum reliqui corporis f £equans, deflexum, extra 
testarn prominens, scuto tectuni niagno ad me- 
dium verticali, tum reflexo, poslice compresso, 
subcarinato, lateribus sinuato, sub medio forni- 
