ART. 8. MILLIPEDS OF CENTRAL AMERICA CHAMBERLIN. 9 



15. SIPHONOPHORA PROGRESSOR, new species. 



Plate 3, figs. 5-7 ; plate 4, figs. 1, 2. 



Dusky yellow, excepting at ends, which are clearer yellow and 

 often of a weakly ferruginous cast. Head anteriorly rounded, only 

 slightly conical at base of beak. Sides subparallel, flaring outward 

 at extreme base. Beak as long as head, slender (pi. 3, fig, 5). 

 Antennae exceeding beak by their sixth and seventh articles, or 

 nearly that amount. Second article clavately widening, the remain- 

 ing portion of antennae of nearly uniform width to the small last 

 article (pi. 3, fig. 5). Collum with sides convex; anterior margin 

 deeply incurved at middle, as shown in the figure. Body not keeled, 

 uniformly and very shortly pilose. Pleurites of anterior and pos- 

 terior region as shown in outline in plate 4, figures 1 and 2. 



Gonopods of male as represented in plate 3, figures 6 and 7. 



Number of segments in female, 137 to 173. A small male, thought 

 to be the same species, has only 99 segments. 



Length, female, 60 mm. ; male, 26 mm. 



Locality. — Honduras: Progreso, three females and one male (W. 

 M. Mann). 



Type.— Cat. No. 818, U.S.N.M. 



Superfamily STEMMIULOIDEA. 



Family STEMMIULIDAE. 

 Genus STEMMIULUS Gervais. 



16. STEMMIULUS BIOCULATUS Gervais. 



Julus {Stemminlus) 'bioculatus Gervais, Ann. Soc. Ent. France, 1844, set. 



2, vol. 2, p. 28 ; Ann. Sci. Nat., 1844, p. 70, pi. 5, fig. 11 ; Ins. Apt., 1847. 



vol 4, p. 200. 

 StemmiulMS Moculatus Pocock, Biol Centr.-Amer., DJi)lop., 1909, p. 109. 



Locality. — Panama : Punta Sabana, Darien. 



Genus PROSTEMMIULUS Silvestri. 



17. PROSTEMIMULUS RELICTUS, new species. 



Plate 4, figs. 3-12. 



Body blackish above, becoming paler, fulvous, down the sides and 

 yellow ventrally ; a median dorsal longitudinal fulvous stripe which 

 expands on each tergite; a row of light spots along each side above 

 and also one just ectad of legs. Head with two ocelli on each side, 

 of which the lower one is proportionately larger than it is in P. 

 cooki, new species (pi. 4, fig. 3). Antennae long and slender, the 

 .3136— 22— Proe.N.M. Vol.60 17 



