Myriopoda of Dominica. 481 



Legs very smooth, the inferior surface of each segment 

 being for the most part fm-nished distally with a single seta. 



A single female specimen taken under a log hj Mr. Gr. F. 

 Angas. 



^ Spiroholus dominicce, sp. n. 



Species without scobina. 



Colour reddish, posterior portion of each somite shining. 



Length of adult male about 49 millim,, width 4 millira. ; 

 number of somites fortj-seven ; sixth and seventh somites in 

 the male slightly dilated laterally and much produced below. 



Head-plate. — Inferior portion divided by a median sulcus, 

 which disappears above ; on each side of this are two setife- 

 rous punctures, one near the middle, the other near the lateral 

 margin ; inferior border angularly excised, the excision being 

 filled with an obscurely denticulated plate. £>/es consisting 

 of an almost circular mass of ocelli. Ardennce stretching 

 laterally as far as the hind margin of the second somite ; 

 proximal segments bare and slightly narrowed proximally, 

 distal segments sparsely hirsute and more narrowed proxi- 

 mally. 



The ^rst tergite not projecting so far below as the second, 

 much narrowed laterally, the lateral portion of the anterior 

 border lightly concave and receding somewhat abruptly from 

 the superior portion of the same border ; the anterior and 

 posterior margins meeting at an angle of about 50° ; apex of 

 the angle rounded, its border being marked by a conspicuous 

 groove, which extends to the ocular area ; upper surface 

 irregularly and minutely punctured. 



Somites not marked with a transverse circular sulcus, its 

 position being occupied by a shallow depression. The lateral 

 surface of each somite marked in front with very many close- 

 set, interlacing, fine striaj. which behind pass into the usual 

 longitudinal sulci ; the dorsal surface of each is in front 

 adorned with a fine network of ridges, the interspaces of 

 which in the hinder portion of the somite become converted 

 into irregularly shaped punctures. Foramina repugnatoria 

 very minute, lodged just in front of the circular depression. 



Anal somite. — Tergite produced behind into a broad angu- 

 lar process, the rounded angle of which covers and projects 

 very slightly beyond the superior angles of the anal valves ; 

 anal valves convex in front, a little compressed behind, with 

 borders not prominently convex from above downwards ; sub- 

 anal plate with rounded margin. 



Ann.dk Mag. N. Hist. Ser. 6. Vol. ii. 34 



