70 REPORT ON THE CENTIPEDES AND MILLIPEDES OBTAINED BY 



Female; head punctulate and striolate, frontal sulcus complete; eyes composed of 35 

 ocelli arranged in 6 transverse rows ; antennae about as long as the head. Somites 

 finely punctulate and striolate ; transverse sulcus nearly obsolete dorsally, the area of the 

 dorsum in front of the sulcus irregularly marked with transverse striae which inferiorly 

 assume a longitudinal direction and are continuous with the normal longitudinal striae, 

 which at the anterior end of the body extend nearly up to the pore ; a faint longitudinal 

 sulcus extending from the pore to the posterior margin. Scobina extending to about 

 the 28th segment ; the posterior border of the tergite just above it shallow]}- emarginate. 



Anal tergite rectangularly produced, not surpassing the valves; valves lightly com- 

 pressed, with borders but little thickened ; aud sternite rectangularly produced. 



Legs with a single seta on each segment except the tarsus, which is supplied with 

 about six. 



Male smaller and thinner than female ; antennae longer than head ; coxae of 3rd, 

 4th, and 5th legs a little produced ; distal segments of these legs and of the following 

 pair swollen beneath ; tarsi of legs in anterior half of body padded. Gopulatory organ as 

 in figure. (Fig. 5.) 



Number of segments 42-43. 



$ length 51 mm., width 5'5 mm. ; £ length 43 mm., width 4'5 mm. 



Loc. Maranta, San Cristoval. 



(17) Rliinocricus gazellensis, sp. n. 

 PI. VI, Fig. 6. 



Colour a uniform black or olive brown throughout, except the anterior margin of 

 the segments which shows as a pale band when the scobina is exposed. 



Head smooth on labral portion, punctulate and striolate, sometimes rather coarsely 

 wrinkled above ; median sulcus strong above and below, weak in the middle. Eyes 

 composed of above 46 ocelli arranged in seven transverse rows. 



Somites smooth, polished, or at most finely punctulate dorsally ; the transverse sulcus 

 obsolete, scarcely traceable below the pore, represented above it merely by a shallow 

 groove, the longitudinal striae extendiug up to or a little above the pore. Scobina 

 traceable to about the 38th segment ; posterior border of segments not bisinuate, furnished 

 with a series of larger and smaller short, spaced, squamiform, clavate pectinate hairs. Anal 

 somite small ; tergite rectangularly produced, transversely impressed ; valves posteriorly 

 prominent, a little compressed towards the margin ; sternite semicircular. 



Male ; legs of third pair with coxae and succeeding two segments produced ; coxae of 

 fourth also a little produced ; tarsus of legs in anterior portion of body padded. Copu- 

 latory apparatus like that of R. cristovalensis, but the median process of the anterior 

 sclerite is shorter and the process of the anterior lateral sclerite longer. 



Number of segments 49-50. 



Length of $ 77 mm., width 6 mm. 



Loc. Gazelle Peninsula, New Britain. 



