Myriopoda of Dominica. 475 



narrow, with gently rounded lateral margins and straight or 

 slightly concave posterior margin. 



Anal pleurites compressed, thickly and deeply punctm-ed, 

 below produced posteriorly into a simple sharp spine, which, 

 like the posterior portion of the sclerite, is devoid of punc- 

 tures ; pleurites projecting considerably beyond the margin of 

 the anal sternite, but not extending further posteriorly than 

 the middle of the anal tergite ; superior half of posterior mar- 

 gin vertical, inferior half gently sloping to the apex of the 

 process. 



Legs hirsute, more so distally than proximally ; claws of 

 all the legs furnished at the base with two spurs ; tarsi of all 

 the legs, the ultimate and penultimate pairs excepted, com- 

 posed of a single segment ; tibia? of twenty-third, twenty- 

 second, and twenty-first pairs of legs unarmed, tibiee of 

 tAventieth pair armed beneath distally with a single spur, tibiai 

 of the rest of the legs each armed distally with two spurs, one 

 above and in front, the other below ; tarsi of the twenty- 

 second and twenty-third pairs unarmed, tarsi of th.e rest of 

 the legs armed distally beneath with a single spur (the 

 superior tibial spine of the nineteenth pair may be absent). 

 Femur of anal legs armed proximally with two spines, one 

 larger beneath, the other smaller above. 



Measurements in millimetres of the largest specimen. — 

 Length (from anterior margin of head-plate to posterior mar- 

 gin of anal tergite) 49 ; width of twelfth tergite 4^ ; width 

 and length of head-plate 3j ; width of anal tergite 2^ ; length 

 of anal leg 14; length of antenna 13. 



Five specimens. 



This species differs from 8. Miersii, Newp., inasmuch as in 

 the latter the anterior margin of the maxillary sternite is not 

 furnished on each side with two teeth. 



Fara. GeophilidaB. 



Geophilus tenuitarsis, sp. n. 



No. of pairs of legs in male 85. Length about 35 millim. 



Antenncs hirsute at base, pubescent at apex, composed of 

 fourteen segments, which increase very slightly in length to the 

 fourth, then progressively decrease in length to the thirteenth ; 

 the fourteenth conspicuously longer than the thirteenth ; distal 

 extremity of each segment wider than the proximal. 



Head-plate about as wide as it is long, with rounded lateral 



