NO. 14 MILLIPEDS OF WEST INDIES AND GUIANA LOOMIS 1/ 



Males with the coxae of the third legs produced into triangular 

 lobes ; similar lobes, decreasing in size, are found on the next four 

 legs. Joints 2 to 5 of legs 3 to 7 have a swollen pad on the under 

 side. 



RHINOCRICUS LATICOLLIS, n. sp. 



Seven specimens were collected on the roadside between Fort-de- 

 France and St. Pierre, Martinique, March 10, 1932. 



Diagnosis. — The broad first segment, the reduced or entirely ob- 

 solete posterior stria on the dorsum of the segments, and the shape 

 of the median plate of the gonopods distinguish this species from its 

 closest relative, R. martiniqiiensis. 



Description. — Length of the largest specimen, a female, 34 mm, 

 width 3.5 mm. Number of segments 39 to 42. 



Color much as in R. martiniquensis, but the median spots are broadly 

 triangular with the base in front, the apex not quite reaching the 

 posterior margin of the segment. 



Antennae with numerous sense cones. 



Fig. 7. — Rhinocricns laticollis. Gonopods, anterior view. 



First segment noticeably wider than any other segment ; the lateral 

 margin on each side broadly rounded and with a very narrow, incon- 

 spicuous raised rim. 



Segments 2 to 4 decreasing in width behind the first segment ; the 

 other segments of uniform width to near the posterior end of the 

 body, which narrows rather gradually. Segments with two transverse 

 striae, the anterior one rather prominent on the dorsum, curving back 

 far below the pore to join the posterior one, which becomes very faint 

 or is lacking on the dorsum a short distance above the pore. Sco- 

 bina present. Last segment, anal valves, and preanal scale as in R. 

 martiniquensis. 



Males with the median plate of the gonopods broad to beyond the 

 middle, the distal extremity narrowly produced, with the acute tip 

 reaching no farther than the tips of the lateral lobes and not as far 

 as the tips of the posterior gonopods (fig. 7). 



