TIIK MYKIAPiihA l\ TUK A t'STIJA l.IAX MI'SKTM nPiU.K M A\X. 153 



the o-oii(i|)(i(ls ; and tlicfe is, iii(U'C(l, a kind of ilaL;'(dlinii, liii( it 

 is very different in siinpe and position from wliat is shown in 

 Attenis' tigures as well as in those of conofenei'ic species 

 descT'ibed by Prof. Silverti'i-'*^ as it is not attached to the base of 

 tlie posterior inner edj^-e of tlie proximal joint, but to tlie innei' 

 edg^e of the distal joint. Moreover the posterior gonopods are 

 simple : they also bear a lateral process, but the latter is fused 

 willi the main stem of the oi'gan. 



A new genus has consequently to be created, for which the 

 name Auni^tiijuiiiuii'x is proposed, with the following 

 diagnosis : — 



Friiiianj t'Jiaracfers : — Antei'ior gonojiods two-jointed. Ven- 

 tral plate fused with the proximal joint of the gonoj)ods, 

 therefore not distinct. The distal joint beai-s a ribbon-shaped 

 pseudotlagellum. Posterior gonopods single-jointed. (Inatho- 

 chilaj'ium as in ]>i)jipr()(j(iin!x. 



Sei-niidanj <_'hanirh-i:-< : — Kyes present, composed of numerous 

 ocelli. Labi'al notch tilled with five teeth ; setiferous dim[)les 

 six to eight. Mandible with five (or six) pectinate lamella?; 

 male mandibular stem expanded. Segments without keels or 

 tubercules ; last segment without caudal pi'ocess. Pores 

 opening in the metazonite. First, second and thii'd paii' of 

 legs of nuile as in T)i iiierinidu ns. 



'I'lll'f' : — ^1. tiif<iiiiiiiiiiini.i. Tasmania. 



Fj'om the related genera Ai/usfrdji/uis, Attems, and Jli/jm- 

 ci(ii(hi(Ji(, Silvestri, Ai)iii>:li(/(nj(iiiii>i is rea.dily distinguished by 

 the presence of the pseudotlagellum of the anterioi' gonopods. 



A.MASTUWX^OXUS TASMAXIAN'l'S, -s'//. linr. 



(Figui-es 32-37). 



(a) ^ mat. : length 53 m/m ; diameter 2.90 m/m ; 63 seg- 

 ments ; two segments apodous ; 115 {)air of legs. 



(b) (5" mat. : length ? ; diameter 3.20 m/m ; 62 segments ; 

 two segments apodous ; 113 pair of legs. 



■■''' Silvestri — Fauna Hawaiicnsis, iii., I9(i4. 



