ART. 10. WEST INDIAN MILLIPEDS CHAMBERLIN. - 11 



Segmental suture absent or traceable only near pore. Segments 

 smooth, weakly constricted about middle. Segments striate beneath 

 and on the anterior and median segments with a series of short, 

 curved, impressed lines in the constricting furrow below level of pore 

 on each side. No scobina present. 



Anal tergite exceeded by the valves, rounded behind. Anal valves 

 moderately compressed. Anal scale broadly triangular, apically 

 rounded. 



Gonopods as represented in plate 3, figures 10 and 11. 



Number of segments, 39. 



Length. — About 27 mm., width 2 mm. 



Locality. — Jamaica : Cinchona. One male. (C. T. Brues, January, 

 1912.) 



TyjJe.—Q^it. No. 5031, M. C. Z. 



Genus MICROSPIROBOLUS Silvestri. 



This South American and West Indian genus is likely to prove 

 heterogenous, though our present knovxdedge is too incomplete to fur- 

 nish grounds for division. The West Indian species now known to 

 belong to this group are M. marmoratus Silvestri, M. insulaiis Sil- 

 vestri, M. helonanus Chamberlin, M. fontis, Chamberlin, M. lineatus 

 Chamberlin, and the three new species described below. 



MICROSPIROBOLUS FONTIS Chamberlin. 



Plate 4, figs. 1, 2. 



Microspiroholus fontis Chambeklin, Bull. Mus. Comp. Zool., 1918, vol. G2, 

 p. 208. 

 L^ocality. — Cuba : San Diego de los Banos. 

 The figures are made from the type. 



MICROSPIROBOLUS BELONANUS Chamberlin. 



Plate 4, flg.s. 3, 4. 



Microspiroholus helonanus Chambehlin, Bull. Mus. Comp. Zool., 1918, voL 

 62, p. 207. 



Locality. — Cuba: Belona Oriente. 



MICROSPIROBOLUS LINEATUS Chamberlin. 

 Plate 4, figs. 5, 6. 



Microspirobolus lineatus Chamberlin, Bull. Mus. Comp. Zool., 1918, vol. 62, 

 p. 209. 



Locality. — Haiti : Diquini. 



20107— 22— Proc. N. M. vol. 61 11 



