
14 RECORDS OF THE S.A. MUSEUM 
Famity TORTANIDAE Sars 1902. 
Sars, 1902, p. 73. 
This family was one of those created by Sars without definition to include 
the two genera Tortanus and Mormonilla, but A. Scott (1909) places the latter 
in a separate family. 
Genus Torranus Giesbrecht 1898. 
Giesbrecht and Schmeil, 1898, p. 157; Steuer, 1926; Sewell, 1923, p. 398. 
The latest revision of this genus, by Sewell, divides it into two subgenera, 
Tortanus and Atortus. 
TorTANUS (ToRTANUS) BARBATUS (Brady). 
Brady, 1883, p. 71 (Corynura) : Sewell, 1932, p. 399. 
Occurrence. IT, 1 female, 1 male; IIT, 2 females, 1 juvenile; V, 1 female. 
Distribution. Indo-pacifie and Malayan regions. 
This species has been recorded from the coastal waters of New South Wales 
by Dakin and Colefax (1940) who state (p. 106) that they were unable to dis- 
cover any description of the male in the available literature. From Steuer’s 
(1926) revision of the genus, to which these authors did not have access, it appears 
that Friichtl (1924) has described the male. Steuer himself described it from 
fresh material and, although his figure of the fifth legs is not very clear, the 
structure of the caudal rami and the smaller size make it almost certain that the 
male found here is that of Brady’s species. At the same time, the fifth lees of the 
male figured by Dakin and Colefax (loc. cit., p. 104, fir. 161 ¢) agree closely with 
those found in this specimen. The caudal rami are also similar and the proba- 
bility is, therefore, that despite the difference in size of their specimen it should 
be identified as the male of barbatus. Unfortunately in the single male at my 
disposal the right antenna was broken off close to the base. Friichtl’s illustration 
(fig. 42) of the male fifth legs agrees in structure with that given here (fie. 5) but 
he does not show the full armature on the left leg. 
CYCLOPOIDA. 
In attempting the description of the Cyclopoids in this collection I have fol- 
lowed Sars’ system of classification. This was completed in 1918, and does not 
appear to have been modified to any serious extent since that time. Sars divides 
the group into three Sections according to the structure of the mouth parts. The 
characteristic features may conveniently be summarized in the form of a key: 
1. Second antenna with an exopod (usually) ; mouth parts suctorial; maxillae and maxillipeds 
sub-chelate R - +3 es ® SrpHonostoma (IT). 
Second antenna without an exopod; mouth parts non-suctorial; maxillae never sub-chelate 
(maxillipeds sometimes in male) a 5 oe T: « 2 
2. Second antenna non-prehensile; mouth parts masticatory; first antennae hinged in male 
GwatHostoma (T). 
Second antenna usually prehensile; mouth parts non-masticatory; first antenna in male not 
hinged ~ oe ‘s bes Porcinostoma (TIT). 
oe 
Apart from two species of Oithona, normal constituents of the plankton, no 
members of Section I were found. It is somewhat surprising that no Cyclopinidae 
were found, since these ate littoral forms, but further search will probably reveal 
representatives of this family. 
