ART. 10. WEST INDIAN MILLIPEDS CHAMBERLIN. 5 



CUBOCRICUS, new genus. 



Proposed for a group of species of large size that differ fi'om 

 Rhinocricus in having the telopodite of each posterior gonopod sim- 

 ple, and slenderly acuminate, with no trace of branching or bifur- 

 cation. Sensory cones of antennae numerous. Anterior legs of male 

 with tarsal pads or thickenings. 



Genotype. — Cubocincus suprenans (Chamberlin). 



CUBOCRICUS SUPRENANS (Chamberlin). 



Plate 3, figs. 6-9. 



Rhinocricus suprenans Chambeklin, Bull. Mus. Comp. Zool., 1918, vol. 

 62, p. 193. 



This is the largest of the known West Indian spiroboloids. It is 

 superficially recognizable in having each segment with a posterior 

 border of ferruginous color and the legs light olive, lighter than 

 body. Surface of segments smooth, the sulcus along segmental 

 suture weak; no distinct secondary sulci. Collum weakly notched 

 behind above lower end. In the male distinct tarsal pads are pres- 

 ent only on the legs of the anterior region (pi. 3, fig. 9). Gonopods 

 of male as figured (pi. 3, figs. 7-8). Number of segments, typically 

 46 or 47. The maximum specimen studied has a diameter of 18 mm. 



Locality. — Cuba : Baracoa. 



Additional specimens from this locality are in the United States 

 National Museum collection. They were secured by Palmer and 

 Eiley, January 30, 1902. 



CUBOCRICUS DUVERNOYI (Karsch). 



Spiroholus {Rhinocricus) duvcnxoyi Karsch, Zeits. naturwiss., 1881, ser. 

 3. vol. G, p. 77. 



Contrasting in color with the preceding species in that the caudal 

 border of segment is of a darker color— typically deep olive— than 

 the rest of the segment instead of lighter and ferruginous; also in 

 the much darker olive color of the legs, these not lighter than body. 

 The tergites are ordinarily marked on dorsum with numerous lon- 

 gitudinal furrows across caudal part and commonly show three 

 encircling furrows, one along suture and one on each side of this, 

 these commonly well marked with the anterior one often deepest. 

 Male with tarsal pads on all legs except those of most caudal pairs. 

 Gonopods very similar to those of suprenans. Number of segments, 

 49-53, 49 or 50 being most common. Maximum diameter noted is 

 15 mm. 



Localities.— Qnhsi'. Santiago de las Vegas; Guantanamo; Pinar 

 del Rio; Guanajay (in a cave, May 5, 1900, Palmer and Riley). 



