194 bulletin: museitm of comparative zoology. 



labral region tinged with rufous. The legs are dark brown, with the distal 

 joints in some degree paler, sometimes fulvoferruginous. 



Sulcus of head complete. Foveolae 2 + 2. Below with three large rounded 

 teeth of which the median is largest. Antennae not exceeding the second 

 segment. 



Collum not reaching level of second tergite, the latter not excavated below. 

 Lower margin rounded, margined below and in front up to level of eye. 



Surface of segments in general smooth and highly polished. Covered 

 anterior region of segments densely transversely striate. Exposed region 

 striate only beneath as in D. dives. Transverse suture or sulcus fine below 

 level of pore, extending on most but part way up dorsum, not evident in the 

 middorsal region. Scobina present on segments eleven to nineteen inclusive. 



Anal tergite furrowed transversely in front of triangular caudal region, the 

 latter caudally rounded. Valves much exceeding the tergite; characteristi- 

 cally angled above behind tip of the tergite; mesal borders very strongly 

 compressed. 



Number of segments forty-eight to fifty. 



Length (female), up to about 175 mm.; width, to 17 mm. 



Apparently close to D. dives (Silvestri) though lack of the male pre- 

 vents full comparison. 



574. DiNEMATOCRICUS LABASANUS, sp. nOV. 



Type.— M. C. Z. 4,721. Paratypes.— M. C. Z. 4,722. Fijis: 

 Labasa (W. M. Mann). 



General color above shining black; sometimes of a vague purphsh tinge, 

 commonly on the sides below the pores. Legs and antennae dark of a distinct 

 purplish cast. 



The sulcus of the head is complete. Foveolae 2 + 2. Surface smooth and 

 shining, marked, however, with the usual oblique striae which are fine. 



Collum well rounded below. Margined below and along the anterior 

 corner in front. Surface very finely coriarious. Ending well above lower 

 edge of the second tergite. 



Other tergites in general smooth and shining, the covered part of each ring 

 with fine oblique striae. Suture in anterior segments distinct entirely across 

 plate but caudally becoming weaker and often obscure above the pores, the 

 suture always single. 



Anal scutum mesally rounded caudally; surface smooth and shining or in 

 part with fine, not dense, granules; miich exceeded by the valves. Valves 

 strongly compressed, their surface appearing smooth and shining but in part 

 covered sparsely with fine weak granules visible only under good magnification. 



Number of segments fifty-eight to sixty-three. 



Length (male), about 165 mm.; width, 12.5 mm. 



