ART. 8. MILLIPEDS OF CENTRAL, AMERICA CHAMBERMN. 47 



metazonites yellow. Cauda yellow distally and along middle. Head 

 smooth. The sulcus across vertex sharply impressed. Anterior margin 

 of collum less convex at sides than in the middle. Anterior corner 

 rounded as usual, the posterior one nearly rectangular. Caudal 

 margin convex each side of the weakly and widely concave median 

 portion, the lateral portions* straight. Dorsal surface transversely 

 depressed behind the middle part of anterior border, this border thus 

 appearing elevated. Second, third, and fourth keels with posterior 

 angles subrectangular, the anterior ones rounded, smooth, with no 

 lateral tooth. None of the keels have the posterior angles more than 

 slightly produced until those of the seventeenth segment. Those of 

 eighteenth a little more acute. Those of nineteenth small, with keel 

 in front of pore swelling essentially obliterated (pi. 18, figs. 1 and 2). 

 Caudal margin of keels normally with two teeth, but sometimes with 

 only one. The lateral margin of the pore-bearing keels indented in 

 front of the pore swelling excepting on seventeenth, eighteenth, and 

 nineteenth segments. The surface of all the metazonites, including 

 the collum, is strongly roughened, with numerous small and irregu- 

 larly polygonal, weakly elevated areas. The areas are larger in two 

 caudal transverse rows on the last segments, a caudal series of areas 

 less distinctly indicated on others. 



Last tergite and anal scale as shown in plate 17, figure 10. and plate 

 18, figure 3. 



Length, about 58 mm. ; width, 9 mm. 



Locality. — Panama: One female. 



Type.—Qvii. No. 5023, M.C.Z. 



Also a number of dried and broken specimens labeled " Panama. 

 Dauro " represent this species. 



116. CHONDRODESMUS MONTANUS (Pocock). 



Dirhahdopliallus montanus Pocock, Biol. Centr.-Amer., Diplop., 1909, p. 

 163, pi. 12, figs. A-Ag; pi. 13, fig. 2. 



Locality. — Guatemala : Volcan de Agua. 



117. CHONDRODESMUS GRANOSUS (Carl). 



Leptodesnms plataleus yranosus Carl, Rev. Suisse Zool., 1902, vol. 10, p. 602, 



pi. 10, fig. 27. 

 DirhabdopJiallus granosus Pocock, Biol. Centr.-Amer., Diplop., 1909, p. 164, 



pi. 12 ; figs. 5-56. 



Localities. — Costa Rica : La Uruca ; San Jose. 



118. CHONDRODESMUS RODRIGUEZI (Brolemann). 



Lcptodesmtis rodriguezi Beolemann, M6m. Soc. Zool. France, 1900, vol. 



13, I). 103, pi. 6, figs. 43-46. 

 Dithahdophallus rodriguezi Pocock, Biol. Centr.-Amer., Diplop., 1909, p. 



164. 



Locality. — Guatemala : Purula. 



