MILLIPEDS OF MEXICO AND CENTRAL AMERICA 33 



Nyssodesmus limonensis (Attems). 



Platyrrhacus limonensis Attems 1900, p. 344; Chamberlin 1922, p. 39. 



TYPE: Zool. Mus. Hamburg (H). 



TYPE LOCALITY: Puerto Limon, Costa Rica. 

 Nyssodesmus tnimus Chamberlin 1922, p. 38. 



TYPE: Mus. Comp. Zool., cat. no. 5020. 



TYPE LOCALITY: Nicaragua. 

 Nyssodesmus monti vagus (Carl). 



? Platyrhacus mexicanus Attems 1900, p. 348. 



Platyrhacus montivagus Carl 1902, p. 662; Chamberlin 1922, p. 40. 



Nyssodesmus valerii Chamberlin 1933, p. 16; Hoffman 1953c, p. 253. 



TYPE: Mus. Hist. Nat. Geneve. 



TYPE AND PARATYPE LOCALITY: Volcande Turrialba, Costa Rica. 



OTHER LOCALITIES: Carrillo and La Palma (Pocock 1909); Cachi', 

 Reventazon Valley (Chamberlin 1914); La Carpintera (Chamberlin 1933), 

 Costa Rica. 

 Nyssodesmus nicaraguanus Chamberlin 1922, p. 39. 



TYPE: Acad. Nat. Sci. Philadelphia. 



TYPE LOCALITY: Machucha, Nicaragua. 

 Nyssodesmus nigricaudus Chamberlin 1922, p. 37. 



TYPE: U.S. Nat. Mus., no. 843. 



TYPE LOCALITY: Costa Rica. 

 Nyssodesmus stenopterus (Brolemann). 



Platyrhacus stenopterus Brolemann 1905, p. 343; Chamberlin 1922, 

 p. 40. 



TYPE: Mus. Nat. Hist. Natur., Paris (H). 



TYPE LOCALITY: Rancho Redondo, Costa Rica. 

 Nyssodesmus tristani (Pocock). 



Platyrhacus tristani Pocock 1909, p. 141; Chamberlin 1922, p. 39. 



TYPE: British Mus. 



TYPE LOCALITY: La Palma, Costa Rica. 



Genus PLATYRHACUS Koch 1847, p. 58. 



Barydesmus Cook 1896, p. 53; Hoffman 1960, p. 21. 



Aymaresmus Chamberlin 1941e, p. 494; Jeekel 1963a, p. 89. 



Dynesmus Chamberlin 1941e, p. 495; Jeekel 1963a, p. 89. 



TYPE SPECIES: Polydesmus scaler Perty, by monotypy. 

 Platyrhacus biiineatus (Lucas). 



Polydesmus biiineatus Lucas 1840, p. 523. 



Polydesmus (Stenonia) biiineatus Saussure 1860, p. 532. 



? Platyrhacus biiineatus Attems, 1900, p. 347. 



TYPE: Not known to exist, seems not to be at Paris (H). 



TYPE LOCALITY: Mexico. 



Hoffman 1953c places this species in "nomen inquirendum." Doubt- 

 less a South American species (H). 



