AET. 8. MILLIPEDS OF CENTRAL AMERICA CHAMBERLIN. 55 



Gonopods as represented in plate 22, figure 2. 

 Length, male type, about 17 mm. ; width, 3.4 mm. 

 Locality. — Guatemala: San Rafael, five specimens (O. F. Cook, 

 June 4, 1914). 



Type.— Cs^t. No. 853, U.S.N.M. 



Family XYSTODESMIDAE. 

 Genus RHYSODESMUS Cook. 



130, RHYSODESMUS CHAMPIONI Pocock. 



Rhysodesmus championi Pocock, Biol. Centr.-Amer., Diplop., 1909, p. 198. 

 Locality . — Guatemala: Zapote, Pacific slope. 



131. RHYSODESMUS STOLLI Pocock. 



Rhysodesmus stolli rococK, Biol. Centr.-Amer., Diplop., 1909, p. 198, pi. 15, 

 figs. 3-3 &. 



Locality. — Guatemala : Retalhuleu. 



132. RHYSODESMUS VIOLACEUS (Brolemann). 



Fontaria vlolaceus Brolemann, M§m. Soc. Zool. France, 1900, vol. 13, p. 

 101, pi. 6, figs. 33-36. 



Locality. — Guatemala. 



amily RHACODESMI DAE. 

 CURODESMUS, new genus. 



Related to the Mexican genus Neoleptodesmus of Carl, with w^ich 

 it agrees in the general form and structure of the body, but from 

 which it differs in the structure of the gonopods. In these the teio- 

 podite is similarly trilobed distally; but the laminate lobe bearing 

 the seminal channel is short and is on the inner side, the other two 

 being ectad of it, the median one the smaller, the ectal one rounded. 

 Telopodite rather short, distally bent into a half cylinder, with open 

 side caudoectad (ventroectad) ; seminal fossa at base on mesal side 

 large, extending openly distad, densely lined with setae. 



Genotype. — Curodesmus guatemalensis^ new species. 



133. CURODESMUS GUATEMALENSIS, new species. 



Plate 22, figs. 3-6 ; plate 23, figs. 1-4. 



Brown or greyish broAvn, the outer portions of keels fulvous. 

 Venter, legs, and antennae fulvous or yellow. In addition to the two 

 longer setae each side of the vertigial sulcus above, the head bears 

 numerous setae, especially over the frontal and clypeal regions. 

 Antennae long, not enlarged distad (pi. 23, fig. 1). The collum 



