ciloiberlin: west Indian chilopoda and diplopoda. 195 



Collum broadly rounded laterally; distinctl}^ margined. Second 

 somite extending much below it, not flattened or excavated as in 

 R. solitarius. Sutures single, becoming obscure dorsally in anterior 

 and middle region of body especially. 



Anal scutum caudally rounded, much exceeded by the anal valves. 



INIedian plate of male gonopods with sides nearly evenly concave, 

 not sinuate as in R. solitarms, distally subacute, not widel}^ rounded. 

 The inner process with the two distal prongs long and slender. 



Number of somites, forty-eight. 



Length (male type) near 37 mm.; width 3.3 mm. 



115. Rhinocricus nigrescens, sp. nov. 



Type.— M. C. Z. 4,375. Parahjpes.— M. C. Z. 4,376. Haiti: 

 Furcy. W. M. Mann. 



iVpparently near R. soHtarius but differing from this and closely 

 allied species in having the body not distinctly banded, the color 

 being a nearly uniform shining brownish black, excepting for a num- 

 ber of small pale dots visible under the legs over the anterior region 

 of each somite, and obscurely lighter caudal border below pores. In 

 some specimens, however, the caudal border of each somite below the 

 longitudinal sulcus at level of pore is bright, white to ferruginous, 

 the light stripe being narrow. The collum is lighter over the median 

 region, but the border all around is deep black, the anterior black 

 band widest. Anal scutum and valves deep shining black. Legs 

 ferruginous. 



Collum distinctly maryned along the anteroinferior corner. Ex- 

 tending ventrad to near the lower border of the second tergite, the 

 latter being flattened or a littlfe excavated below. 



The sutures obscure or essentially absent above; also weak laterally 

 excepting low down on the sides. 



Anal scutum caudally narrowly rounded, not free, a little surpassed 

 by the valves which are evenly convex, not at all compressed or 

 margined. 



Number of segments, forty-eight. 



Length near 34 mm.; width, 3.1 mm. 



