
70 REcoRDS OF THE S.A. Museum 
seta and longest earpal seta reach well beyond the tip of the dactylus in cana (fig, 
3, G); capretla (fig. 3, FL), and colloné (lig. 35, F), while the second carpal seta 
is much more than half as long us ihe main one. 
C. munda, fulgida, australis, mawsonae, aspera, glabosa, nitida and usitata 
have three carpal setae; the longest reach to the tip of the dactylus in the first five 
Species (as in fie, 3, [), but the propodal and tio of the carpal setae ave rela- 
tively much longer in globosa (fig 8, A and J), nilida (fig. 84, C) and usitala 
(fig. 41, D). 
i miobergi, Wibulis and sabilosa have long setae; the propodal and three 
of the four carpal setae here present reach to well beyond the apex of the dactylus 
(fig 3, KC), 
The greatest development of the fossorial sctae is found in walks and lweida 
(fig. 3, M), in which they are very long, with five on the varpus, Tn bovis also the 
setae are long, but are differently arranged (fig, #, N); there are two setae at the 
distul outer angle of the carpus, precerled by three on the outer margin; there 
ave algo three on the inner face of this joint. 
C. pura is a variable species in size and in the character of some of its appen- 
dages. The posterior peraeopords have lwo to three sefae at the outer distal angle 
of the earpits and often one on the outer margin; the longest setae reach to the 
tip of the dactylus or a little beyond, sometimes well beyond. 
A limited mumber of very juvenile specimens has been examined; it would 
seem that the setac areas lone, or abottas long, as in the adalt but may be fewer 
in number, In teibutis for instance, the adult posterior legs are mneh as in fig. 
3, K, but the 2°7 mm, juvenile has only one long carpal spine (fig. 3, L). On the 
other hand, in usitata, the setae at 2 mm, are as in the 7 mm, adult, 
Uvopode, These appendages are recognized ag useful aids to diagnosis by all 
authors, and with good reason, lh mature or almost mature examples they vary 
very little in the same sex, but caulion is necessary in dealing with young specimens, 
Where strongly indurated forms are concerned, (vo much reliance cannot le 
placed upon the number of pluniose setae present; they are brittle in such, and 
tend to be lost wholly or in part either dimimg the wear and tear of life av after 
preservation, They are found in full number after ecdysis (fig. 48, EH). Serra- 
tions and spines of the inner margins persist and their arrangement as well as 
number is of specific import, 
The apices of both rami may be simple and aeute, or the tip of the exopod and 
wore rarely of the endopod also, may he narrowly truncate, with one or more 
articulated spines, Whatever their character, it is constant within a species, 
Attention is here directed to minute artievlated processes found always in 
some species of the lews group on the apex of the exopod, They appear tu be 
modified or rudimentary spines and the term muerones is bere applied to them 
(see fig, 6, Wy 31, 0 and 1334, D, ete,). Mael mnero is generally leat-like and as 
many as three mucrones of unequal size may be prosent or the ranius. be pre- 
sence of these muacrones affords real assistance in preliminary sorting of material 
as, allhough insignificant in sive, when evee recognized, they ave easily discernmitile 
with the binocular at a low magiitieation. in the highly indurated exseulpla 
group, it seems that mucromes my be present in the young but absent in the adult, 
for instanee, bovis and beibuliy; in the last-named. the apex of both endopod and 
exopod bears a mne¢vo in the shape of a very minute spine, but in the adult the 
tips of the ran are dilated (exopod) or subacute (et. fe. 86, Hand EB). On the 
other hand, the adult of aspera has always two inconspicnous mucrones on the 
narrowly trnoneate apex of the exopod (lig, 46 I), and in sabulosa there is a 
flattened muero on the exopoud of the adult. (fig. 58, G, and 60, 07), 
