
150 RECORDS OF THE S.A, MUSEUM 
Kirst antenna wilh third joint of peduncle barely longer than seeond, 
And vot mueh shorter than first; accessory flayvellum single-jointed, relatively 
larwe, one-half the length of the first segmeut uf the two-jointed main lash. 
Basis of first peracopod with \sual lamellate comb; not much more than 
two-thirds as long as rest of limb; isehinny with a flattened spine at distal end 
of ouler margin; carpus equal in length to propodus, whieh is two and one 
half times as long as dactylus; the latter has a distal claw (as well as one or 
two slender setae) shorter than the joint. 
Sevond peraeopod with basis distinetly longer than rest of limb; ischium 
istinet; merus much shorter than carpus and as long as dactylus, which is 
not mueh longer than propodus: longest dactylar seta about as long as dacty- 
Ins anc propodus together. 
Carpus of fifth peraeopod more than three times as long as merus and 
almost (wice as long as propodus, whieh is somewhat longer than dactylus. 
Telgonie somite dilated pusteriorly, where it is broader than long; fifth pleon 
somite narrow, twice as long as wide, 
Uropod with peduncle smooth, two and three-fourths times as long as tel- 
some somite and distinctly more than twiee as long as endopod; exopod three- 
fourths as long as endopod with terminal spine slender aud reaching to tip of 
(ligtal spine of endopod ; on inner margin of endopod are three setae (one really 
distal) and at outer side of termittal bristle is a short seta; endopod with ter- 
minal spine stout, less than half as long as the ramus, and with seven very 
slender spines, successively increasing in length, ou inner margin. 
Colour milk white, without any dark pigmentation excepting om ocular lobe, 
Length 2°5 mm. 
While the Queensland examples ol svtsutus are smaller than the types, the 
South Australian specimens of the variety are larger; nasulus camelus has been 
taken only on the south coast, between long. 117’ and 138", about lat. 35° 8, nasufus 
only above lat, 28° 8,, on both east and west coasts, 
NANNASTACUS INCONSTANS 8p. NOV. 
Adult male (uristate form). Carapace two-fifths of total length of animal, 
wider than greatest depth, which is move than half its length; its anterior portion 
and the moderately inflated branehial reyions are studded with large granules, but. 
near the inferior margin the surface is squamose-reticulate; dorsally there is a 
double row of tubercles. small anteriorly and posteriorly but. for approximately 
jhe middle third of length of carapace high, flattened, distally dilated and crowded, 
producing the appearance of a pair of longitudinal crests; lateral to each row of 
larve tubereles is a curved series of small tubercles; at binder end of carapace is 
a median tumidity, granulate (as well as with the aforementioned rows of tiny 
tnbereles) and fecbly bilobed al the rear; behind each eye is a prominent, tubercu- 
late elevation, posterior to which and a little above its level, is a small rounded 
bras. Eyes widely separated, each with the usnal three cornmeal lenses. Amtero- 
lwteral angle with small spiniform tubercles, none of which very definitely empha- 
sizes theangle, Pseucorosival lobes widely gaping above but meeting below. 
Pedigerous somites together barely more than half as long as earapace, the 
third and fourth visually wide, as broad ax the second and ag the carapace; 
first exposed only as narrow strip; dorsally the first and second somites are 
short, bit the back of the third to fifth is elevated and (like the pleural por- 
Hons of second to fifth) strongly tuberculate; the tubercles on the pleurae of 
the fitth somite ave elongate, almost spiniform. 
Pleo pbout three-fourths as long ax cephalothovex, granulate, the dorsum of 
veel somite with two longitudinal rows of three or four larger Lobereles, the last 
