
HALE—AUSTRALIAN CUMACEA 433 
internal apical angle is spinose; remaining joints as in tenwipes; ischium and 
merus each with a small inner spine, 
Basis in all peraeopods with a few long setae, First leg stout, when extended 
with carpus reaching well beyond antennal angle, and propodus past apex of 
psendorostrum ; basis short, barely more than one-fourth of length of rest of Limb, 
with a few spines on distal margin; carpus and prepodus subequal in length, 
each almost half as iong again as dactylus, 
Secand peraeopod nearly half as long as first; basis three-fifths as long as 
rest of limb; ischium suppressed; carpus barely longer than merus but distinctly 
longer than propodus, which, is two-thirds as long as dactylus. 
Basis of third perecopod slightly longer than remainder of limb, that of fourth 
barely shorter; merus of third and fourth pairs about as long as carpus and, 
propodus together; propodal seta and longest carpal seta not reaching beyond 
tip of dactylus, which is not markedly elongate. 
Pedunele of uropod dilated distally, not quite as long as telson and as long 
as exopod, which is one-fourth as long again as endopod; longest terminal spine 
of exopod slender, a little shorter than the ramus; endopod with firet joint slightly 
longer than second and with long terrainal spine distinctly less than length of 
ramus. 
Length 2-17 mm, 
Adult male, Integument translucent, crisp but not highly calcified ; surface 
of carapace with coarse reticulate patterning which is seén with difficulty because 
of the transparency, 
Carapace large, about two-fifths of total length of animal, depressed, fully 
one-third as wide again as greatest depth; on each side there is a marked dorso- 
lateral swelling in anterior half, below which the sides are concave; at the rear 
of this lateral hollow the hinder parts of the sides are tumid and below it isa greatly 
elevated fold; on the dorsum there is a sharp, median longitudinal carina running 
from ocular lobe to about three-fourths of length of carapace; the back is depressed 
on each side of this ridge, but rounded at the rear, where there is a pair of low 
dorso-lateral carinae; finally, there is a similar pair of ill-defined dorsal ridges 
on each pseudorostral Iabe, Antero-lateral angle narrowly rounded, not serrate, 
Pseudorostrum Jong, blunt and dawnbent, the lobes meeting for a distances equal 
to one-third of length of carapace; it bears short hairs (in mo way like those of 
the female and young male) and is feebly serrate below. Frontal lobe distinctly 
delineated ; ocular lobe tumid, very large, twice as wide as long and much bigger 
than in female with three larger eyes exhibiting a granular structure, 
Pedigerous somites together less than half as long as carapace; the first three 
ave crowded so that the anterior angle of pleural parts of second overlap first and 
eyen carapace; pleural parts of third to fifth swollen, rounded, those of third 
moderately expanded fare and aft ; the back of each somite js elevated, the tursidity 
bounded by a longitudinal carina on each side im fourth and fifth somites. 
Pleon much shorter than cephalothorax, stouter than in female, but with 
sixth somite not much broader than long and not shorter than fifth ; telson stouter 
than in female, less than half as long again as sixth somite, with the pair of 
slender termirial spines more than one-fourth of length of telson. 
First antenna with peduneular joints less unequal in depth than in female; 
the atout third segment is as long as first two together; flagella subequal in length, 
each three-jointed (see fig, 54) and more than one-third as long as last segment 
of peduncle, 
Second antenna richly furnished with fine setaé; the flagellum consists of 
eleven short and stout segments, the proximal four not longer than wide; the 
lash is not.as long as peduncle, 
