82 U.S. NATIONAL MUSEUM BULLETIN 266 



Genus ANELUS Cook 1911a, p. 160. 



TYPE SPECIES: Anelus reduncus Cook, by original designation. 

 Anelus richardsoni (Pocock). 



Spirobolellus richardsoni Pocock 1908, p. 87; Cook 1911a, p. 163. 



TYPE: British Mus. 



TYPE AND PARATYPE LOCALITY: Tampico, Tamaulipas, Mexico. 



Genus MESSICOBOLUS Brolemann 1914, p. 32. 



TYPE SPECIES: Spirobolus godmani Pocock, by original designation. 

 Messicobolus collaris (Chamberlin). New combination suggested by 

 W. T. Keeton and approved by R. L. Hoffman. 



Aztecolus collaris Chamberlin 1953a, p. 148. 



TYPE: Chicago Nat. Hist. Mus. 



TYPE AND PARATYPE LOCALITY: Volc^n Tajumulco, Guatemala. 

 Messicobolus eximius (Porat). New combination. 



Spirobolus eximius Porat 1889a, p. 248. 



TYPE: Location unknown but possibly Nat. Hist. Mus. Brussels (H). 



TYPE AND PARATYPE LOCALITY: Guatemala. 



Included in this genus on the basis of its association with /!/. mysiecus 

 (Saussure), Carl 1919. 

 Messicobolus godmani (Pocock). 



Spirobolus godmani Pocock 1908, p. 78; Brolemann 1914, p. 32. 



TYPE: British Mus. 



TYPE AND PARATYPE LOCALITY: Omilteme, Guerrero, Mexico. 

 Messicobolus hoogstraali Chamberlin 1941d, p. 254; original spelling 

 hoogstralli. 



TYPE: Collection of R. V. Chamberlin. 



TYPE AND PARATYPE LOCALITY: Ojo de Aguas, Sabinas Hidalgo, 

 Nuevo Leon, Mexico. 

 Messicobolus hoplomerus (Pocock). 



Spirobolus hoplomerus Pocock 1908, p. 76; Carl 1918, p. 460. 



TYPE: British Mus. 



TYPE LOCALITY: Costa Cuca, Pacific slope, Guatemala. 



OTHER LOCALITY: Guatemala (Carl 1918). 

 Messicobolus monticola (Pocock). New combination. 



Spirobolus monticola Pocock 1908, p. 80. 



TYPE: British Mus. 



TYPE LOCALITY: Omilteme, Guerrero, Mexico. 



Above combination made on basis of Pocock's association of the 

 species with M. mystecus. 

 Messicobolus mystecus (Saussure). 



Julus mystecus Saussure 1860, p. 569. 



Spirobolus mystecus Saussure and Humbert 1872, p. 177; Carl 1919, 

 p. 386. 



