chamberlin: myriopoda of tue Australian region. 197 



somites bchmd collum the dorsum of tergite solid black, the black farther 

 caudad enclosing more and more of yellow. Anal valves black as also the 

 tergite excepting distal angulate portion which is fulvous. Anal scale fulvous. 

 Collum black with anterior border pale; head covered with a dense dark 

 network which to naked eye appears solid, the labrum fulvous. Legs fulvous. 

 Antennae dark, especially distally. 



Sulcus of head nearly complete, only narrowly interrupted in frontal region. 

 Foveolae 2 + 2. Antennae extending to third segment. 



Segmental suture not clearly defined, the keels present on metazonite above 

 continuing upon prozonite without complete interruption though not so 

 uniformly as in D. decipiens. The keels are low but narrower and more 

 sharply defined than in D. decipiens; not present as such below pores, though 

 the flat region between the striae are similarly dark colored as in the dorsal 

 region, the stripes wider; usually thirteen keels on dorsum of each segment 

 between pores. Posterior margins of somites not sinuate. Scobina much 

 narrower than in D. eutropis, ceasing at' somite XVI. 



Number of segments, thirty-five. 



Length (female type), 41 mm.; width, 5 mm. 



578. DiNEMATOCRICUS EUTROPIS, sp. nov. 



Type.— M. C. Z. 4,929. Fijis: Nagasu (W. M. Mann). 



Prozonites a pale, somewhat greyish olive; metazonites abruptly a much 

 darker color, deep brown. Legs fulvous, paler distaUy. Anal valves and 

 anal tergite olive, the latter narrowly bordered with pale. Collum oUve, 

 narrowly bordered with brown. 



Sulcus of head distinct and complete. Antennae short, not extending 

 beyond collum. Foveolae 2 + 2. 



Second tergite extending much below level of collum. Sutures of segments 

 clearly and uniformly impressed. Pore in line with suture which bends sharply 

 about its posterior portion. Metazonites entirely across dorsum and down 

 sides below pores as well with numerous sharply elevated, rather thin, keels 

 which end abruptly in front at the median suture; below middle the keels 

 decrease in height becoming finally merely the sharply defined lower edges of 

 the strongly impressed striae ; usually about twenty-five keels on dorsal region 

 between pores. Between the median and anterior suture are somewhat 

 obhque longitudinal sulci each with one edge elevated into a narrow low keel 

 these keels more numerous and much more weakly developed than those of 

 the metazonite, being obvious only under the microscope. Posterior edges of 

 segments not sinuate. Scobina large, very wide, extending to somite XXV. 



Anal tergite obtusely angular above, much exceeded by the valves, the 

 mesal borders of which are elevated and strongly compressed. 



Number of segments, thirty-eight. 



Length (female), near 50 mm.; width,^5_mm. 



