
428 RECORDS OF THE S.A. MUSEUM 
First and second pedigerous somites shorter than in female, but nevertheless 
longer dorsally than third, which is reduced to a narrow strip, but has the pleural 
parts well expanded backwards. 
The first to fourth peraeopods bear moderately well-developed exopods, 
although the peduncle is barely wider than in anterior pairs of female; those of 
the third and fourth pairs have the setae not fully developed, 
There is no trace of pleopods. 
Length 4-6 mni, and thereabouts. 
Loc, Tasmania: Babel Island, 89° 55‘ §., 148" 31’ E., 25 metres, inshore 
station, surface (type loc., ‘“Warreen’’ Station 29, N. 200, Jam., 1939). New 
Sonth Wales: off Eden, 30 and 60 metres, in coarse sand and in silt (K. Sheard, 
A, Trawl and submarine light, Oct., Nov,, and Des., 1943); 4 miles off Port 
Hacking, 80 metres, on mud (K, Sheard, A, Trawl, May, 1944); Ulladulla, 75 
metres (K. Sheard, A. Trawl, June, 1944). Type female in South Australian 
Museum, Reg, No. C, 2341, 
This easily recognized species is named after Capt. A, Flett, Master of the 
“*Warreen,’’ 
The dactylns of the first peraeopod is shorter in immature males and females 
than it is in the adult; also the matginal setae of the mb are sparse, but this 
applies also to some of the almost mature examples, and to ovigerous females from 
Wiladulla, which are smaller (5 mm.) than the type. The retiewlate patterning 
is always distinct on the carapace, but the sparse granulation is not constant. 
As in some species of Gynodiastylis pellucid spots, like those often occurring 
in Campylaspis, ete., are apparent.on the carapace of a few examples, 
The first antennae often bave a prominent squamose seulpturing, particularly 
om third peduncular joint; the accessory flagellum may be slightly shorter than 
in the type (fig, 50, A.) and only as long as the long first joint of main lash. 
The median contact length of the psendorostral lobes varies slightly. 
Genus Arvonasryiis Hale, 
Allodiastylis Hale, 1936, p, 426, and 1987, p. T2. 
The main distinguishing features are the slender upturned pseudorostrum, 
furnished with long setae at the tip, of the female and young male, and the 
character of the first antenna, The latter is long for the group (about half as 
long as carapace in the female) and has the first and second joints of the peduncle 
dilated and together not longer than the elongated third segment, 
In combination with these characters the female completely lacks thoracic 
exopods and the telson is elongate, subeylindrical, and with no defimte post-anal 
part, The second antenna of the female projects (relatively) well beyond the 
anterior margin of the carapace, it is apparently four-jointed, but the sutures 
of the terminal conieca] part, thongh discernible, do not separate distinetly the 
last three joints (see fig. 56, ant, 2). The first peraeopod, is moderately long, 
with the dactylus normal for the family, and the propodns and carpus subequal 
in length. The most distal of the carpal setae of the third to fifth peracopods 
is not very stout and is not shorter than the other or others. 
he distal spines on the telson of the adult male (as known in two of the 
spécies) are long and bristle-tlike, This separates the male from that of all related 
genera except Zimmeriana, where similar sexual dimorphisin occurs, but there 
the first antenna and first peracopod are distinctive, 
The endopod of the uropod is two-jointed in both sexes of the four species 
which fall here, The first antenna exhibits some variation, In hirtipes and 
