28 U.S. NATIONAL MUSEUM BULLETIN 266 



Pammicrophallus pictus Pocock 1909, p. 185. 

 TYPE: British Mus. 

 TYPE AND PARATYPE LOCALITY: Omilteme, Guerrero, Mexico. 



Genus SYNTHODESMUS Chamberlin 1922, p. 54. 



TYPE SPECIES: Synthodesmus simulans Chamberlin, by original des- 

 ignation. 

 Synthodesmus simulans Chamberlin 1922, p. 54. 



TYPE: U.S. Nat. Mus. no. 853. 



TYPE LOCALITY: San Rafael, Guatemala. 



Genus TUNODESMUS Chamberlin 1922, p. 52. 



TYPE SPECIES: Tunodesmus orthogonus Chamberlin, by original des- 

 ignation. 

 Tunodesmus laminiger Chamberlin 1922, p. 53. 



TYPE: U.S. Nat. Mus., no. 852. 



TYPE LOCALITY: San Rafael, Guatemala. 

 Tunodesmus orthogonus Chamberlin 1922, p. 53. 



TYPE: U.S. Nat. Mus., no. 851. 



TYPE LOCALITY: San Rafael, Guatemala. 



Genus ZEUCTODESMUS Pocock 1909, p. 185. 



TYPE SPECIES: Zeuctodesmus caeruleus Pocock, by original desig- 

 nation. 

 Zeuetodesmus caeruleus Pocock 1909, p. 186. 



TYPE: British Mus. 



TYPE AND PARATYPE LOCALITY: Amula, Guerrero, Mexico. 

 Zeuctodesmus ferrugineus Chamberlin 1943b, p. 54. 



TYPE: Collection of R. V. Chamberlin. 



TYPE AND PARATYPE LOCALITY: Zitacuaro,Michoacan, Mexico. 



Family ONISCODESMIDAE 



Genus BARRODESMUS Chamberlin 1940a, p. 7. 



TYPE SPECIES: Barrodesmus isolatus Chamberlin, by original des- 

 ignation. 

 Barrodesmus isolatus Chamberlin 1940a, p. 7. 



TYPE: Collection of R. V. Chamberlin. 



TYPE AND PARATYPE LOCALITY: Barro Colorado Island, Canal 

 Zone. 



Genus BONETESMUS (see bottom of page 111) 



Genus LIGIODESMUS Pocock 1909, p. 114. 



TYPE SPECIES: Ligiodesmus pusillus Pocock, by original designa- 

 tion. 



