430 ME. H. R. Hoae on Australasian spiders. [Dec. 2, 



appear to have been developed in Australia proper, and few of its 

 members have strayed away thereform. 



The whole of its species have the male palpal spiral in its most 

 fully developed form with about 10 spirals. 



The cephalothorax is set on straight with the body ; in altitude 

 it is generally less than any member of the preceding genera, 

 and in profile varies from a continuou:s curve highest about the 

 middle to a flat surface. The latter form comprises two, or 

 perhaps three, species hitherto known ^sHolconia (Voconia) Thor., 

 but which, except for the flatter cephalothorax and consequently 

 lower clypeus, differ in no particular from the rest of the Isopedce. 

 Thorell himself was doubtful how to place his northern form, 

 H. siihclola Thor. ; and in the only specimens I have seen to 

 attribute to H. dolosa L. Koch, the cephalothorax is quite as 

 normally rounded as many other species of Isopeda. 



In a few instances the eyes of the front row, which is straight 

 or slightly procurved, are all equal, but moi-e generally the laterals 

 exceed the median in diameter in the proportion of about 5 to 4. 

 The rear row is also straight or slightly procurved, abovit a third 

 longer than the front row, the rear median eyes always smaller 

 than any of the others, and either rather nearer together than 

 they are from the lateral, or equidistant. 



The median eye-square is broader than long. 



The cephalothorax is as broad as or broader than long and 

 straight in front, where it is generally about two-thirds the greatest 

 width. The legs always in the proportion 2 14 3. 



Note. — The name Isopeda L. Koch has given rise to some 

 discussion at various times in consequence of its being certainly 

 wrongly formed from the Greek. Thorell and Simon set it doAvn 

 to a Icqosus ccdami and boldly write Isojyoda, but L. Koch uses 

 his original form a score of times (and never any other) within a 

 few pages of Heteropoda, also used by him over and over again. 

 It certainly was no lapsus calami but deliberately intended. He 

 probably knowingly spelt it wrongly to avoid clashing with the 

 order of Crustacea Isopoda. The name is altogether a misnomer 

 as applied to this genus, for no two pairs of legs of any of the 

 species are alike in length. 



The only species which had two pairs of legs (i. and ii.) of equal 

 length has been removed to anew genus {Pediana^. Sim.), though 

 for other reasons. 



Synop>sis of Genus Isopeda L. Koch. 



Females. 

 A. Sternum deep jet-black. 



A*. Underside of abdomen whole-coloured, without anj' 

 transverse dark stripe behind the genital fold, 

 fli. Eyes of front row equidistant. 



or. Distinguishable markings on back of abdomen. 

 a?. Three pairs of dark spots on whole-coloured 

 back of abdomen ; coarse hair on abdomen, 

 rather coarse on cephalothorax; cephalo- 

 thorax longer than tibia i frenchi, nov. sp. 



