chamberlin: myriopoda of the Australian region. 191 



Number of segments forty-eight as against only forty-two to forty-four 

 in D. exul. 



Length about 52 mm.; width, 5.4 mm. 



570. DiNEMATOCRICUS FRANGENS, Sp. nOV. 



Type.— M. C. Z. 4,746. Paratype.— M. C. Z. 4,747. Ceram: 

 Wahaai (Thomas Barbour). 



The general color is fuscous with the posterior borders of the segments 

 rufescent. Legs and antennae brown to ferruginous. Head typically blackish 

 with clj'peal region and an area in frontal region ferruginous. 



Sulcus of head widely interrupted in the frontal region. Setigerous foveolae 

 2 + 2. Antennae very short. 



Collum rounded and margined below in the usual manner. The second 

 tergite extending well below it, not excavated. 



The surface of anterior segments, hke that of the collum, with numerous 

 exceedingly fine impressed points from which obscure fine hues in places may 

 be traced. In the middle and posterior regions the surface without such 

 impressions, smooth and shining. Covered part of prozonite not striate in 

 general. Segments broadly and shallowly depressed about the middle. 

 Segmental sulcus obscure or mostly wholly absent across the dorsum. Seg- 

 ments deeply striate beneath and up to near the pore; in several of the anterior 

 segments, including the sixth or first porigerous, one or more of the upper- 

 most striae curve transversely across the dorsum forming one or two complete 

 deep sulci in front of the ordinary one. Scobina extending to the forty 

 second segment; each consisting of a deeply impressed lunate area followed 

 by the usual series of fine striae. 



Caudal part of the anal tergite set off by a sharply impressed transverse 

 sulcus. Caudal angle subacute, not surpassing the valves. Valves with 

 inner borders compressed and elevated; not angled above. 



Number of segments fifty-two or fifty-three. 



Length (female), near 78 mm.; width, 7 mm, 



A species like D. undulatus and several other species in having the 

 posterior margins of some of the anterior segments undulate over the 

 scobina of the succeeding segment. 



571. DiNEMATOCRICUS AMPHELICTOGON, sp. nOV. 



Type.— M. C. Z. 4,716. Paratypes.— M. C. Z. 4,717. Fijis: 

 Nadarivatu (W. M. Mann). 



The color of the dorsum above the pores is nearly black, uniform, excepting 

 the head, collum, and succeeding five tergites which are light brown or olive 



