Ai'srijAi.iAN ii;Ar-i i;s1'ii>ki;> — kwimkiw anm ri i i.kim;. 105 



are the biood of young ones and they seem to remain there for some 

 months before leaving to form nests in the vicinity of the home. The 

 Hrst nests formed by spiders are only slightly lai'ger than those found in 

 the tube with the mother ; the burrows are very small nnd possess no 

 door ; [)robabl3' this stage is after the third cast. The nest is simply an 

 open tiii)e near these and only little larger are tubes provided with minute 

 doors. From this on, the tubes are eidaiged by simply cleiiniiig out and 

 reliuing and adding concentrically to the door. In original doois the 

 minute one of the first nest may often be tiaced as the nucleus. 



The clearing out process is often undertaken in damp weather, and 

 the Hrst autumn rains are the period of greatest activity. The nests often 

 being surrounded with small fiagments of clay and soil, making them 

 appear like anthills. Sometimes, howevei', the old dooi' is discarded and 

 a new one built. In this case, if built by an adult it is started from tlie 

 hinge along its whole length, just as it is if the lid had been experiment- 

 ally removed for observation. 



At certain places in the hill country (Mylor, Pewsey Vale, South 

 Australia), the younger nests at least exhibit lids with interlocking dent- 

 ations into the mouth of the tube. Perfect as the ordinaiy door is, this 

 modification must make a much gi-eater call on the ingenuity of the 

 Blakistonians which are mostly immature. 



The female spider is a singularly sluggish animal juaking no attempt 

 to defend itself unless irritated, when it stands on its hinder two pairs of 

 legs and strikes in the characteristic attitude of tlie Territellaria?. 



11 ah. —Mitchiim, Adelaide (October 26, 1917), Bridgewater (October, 

 1911), Black Hill, Port Augusta, Port Augusta West '(.Inly 24, 1907), 

 Pichi Richi, Leviston, Hope Valley (April, 1908), Canowie (Api-il, 1908), 

 Mallala (April, 1908), Yai'cowie, Kalkabury, York Peninsula (March, 

 1908), Oaklands, Kingswood, Woolshed Flat, South Australia; Broken 

 Hill, New South Wales. 



Gro>,p ARBANITE^. 



<jeiiH!i Dyarcyops, Hogg. 



I'll'irnjapt! aiidreirtii, Hogg, and D. hirni, Kulcz., were, until the pub- 

 lication of this paper, the sole lepresentatives of the genus to Avhich they 

 belong, and to these ai'e now added thi-ee more, viz., D. vielimcholicn.^, V. 

 i<t)ifhn)< and D. maciilosas, each of which is from the vicinity of Sydney. 

 Of these, the first-named, was collected at Clifton Gardens, on the north 

 side of Sydney Harbour, by one of us [R.H.I'.], who also collected the 

 last-tiamed at La Perouse, Botany Bay, just as this portion of tlie paper 

 was being put into type, the second was collected by Mr. Danvers Power, 

 from his gardeii at Burwood. Judging by 1). io)tthit.-^ Hogg's definition of 

 the genus will have to be amended so as to read : — " T/ionicic fovea deep, 

 long, .straight or slightly procuived." In every respect, save that of the 

 fovea, IJ. ionthus conforms to the original description of the genus. ^ 



•' Hog^'— rtoc. Zoul. 8uc. Lond., l'J02, p. 130. 



