CHAMBERLIN: MYRIOPODA of the AUSTRALIAN REGION. 199 

 580. DiNEMATOCRICUS PERSTRIATUS, Sp. nov. 



Type.— M. C. Z. 4,755. Paratype.— M. C. Z. 4,756. Fijis: 

 Waiyanitu (W. M. Mann). 



Greneral color black; typically each segment below level of pore with a flavous 

 stripe behind suture not extending to caudal border. Legs flavous to pale 

 ferruginous. 



Head with sulcus distinct above and below but interrupted in the frontal 

 region. Foveolae 2 + 2. 



Collum faihng much of attaining the lower level of the second tergite. 

 Lower ends with angles widely rounded but lateral margin somewhat flattened. 



The segments in general both below and on the sides and across the dorsum 

 finely densely striate, the striae not so fine as, and the intervening ridges coarser 

 than, in D. sericoides and alhed species all of which have a silky lustre. On the 

 dorsum part of the striae branch dichotomously, while in the middorsal region 

 they form a series of arches. Segmental suture not evident. Covered zone 

 of segments smooth. Scobina not present. 



Anal segment lacking striae. Scutum faiUng much of covering the valves 

 above. Mesal borders of valves not elevated. 



The median plate of the gonopods has the basal portion anteriorly convex; 

 the distal process is long, exceeding the basal plate in length, narrow, attenu- 

 ated moderately distad and with the distal end bent cephalad. The anterior 

 branch of the telopodite of the posterior gonopod coarser and longer than the 

 other, the telopodite bent at level of bifurcation and the lesser branch diverg- 

 ing from the other, the middle of which it surpasses. 



Number of segments, forty and forty-two. 



Length (male), about 26 mm.; width, 2.6 mm. 



58L DiNEMATOCRICUS NANNOIDES, sp. nOV. 



Type.— M. C. Z. 4,748. P.^ratypes.- M. C. Z. 4,749. Fijis: 

 Taviuni (W. M. Mann). 



The color is black with the legs ferruginous. 



The sulcus on the head is discontinuous or at least very obscure in the 

 frontal region. Setigerous foveolae 2 + 2. Surface with very fine points. 



Collum widely rounded beneath and margined in the usual way. Surface 

 with fine coriarious impressed fines. Second tergite extending much below 

 its level. 



The surface of the other segments is also marked with densely arranged 

 fine and weak lines which are coriarious in arrangement but dominantly 

 longitudinal. Segmental suture not evident either above or below the pore 

 level. Each segment beneath and on the sides wth numerous longitudinal 



