198 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



Bolbocerastes peninsularis (Schaeffer) 



Bradycinetus serratus var. peninsularis Schaeffer, 1906, p. 252. Type, male, 



Santa Rosa, Baja California, Mexico (USNM). 

 Bolboceras serratus var. peninsularis (Schaeffer) Boucomont, 1912, p. 13. 

 Bolbocerastes peninsularis (SchaeflFer) Cartwright, 1953, p. 116. 



This rare species has been collected only in Baja California, Mexico. 

 Specimens were taken at Santa Rosa, San Felipe, La Paz, and San 

 Ignacio from July to October. 



Genus Bolbelasmus Boucomont 



Bolbelusmus Boucomont, 1911, p. 335. — Cartwright, 1953, p. 97. 

 Kolbeus Boucomont, 1911, p. 335.— Chapin, 1946, p. 79. 



Genotype: Scarahaeus gallicus Mulsant, designated by Cartwright 

 (1953, p. 97). 



Generic limitations: Given by Boucomont (1911, p. 335). 



Clypeo subrotundato, inermi, tenui, carinula a fronte separato, tuberculo 

 frontali subconico; antennarum clavae primo articulo cum circumscripta area 

 denudata; posterni fovearum oris declivibus absque carinis; coxis intermediis 

 subcontiguis, mesosterno inter illas tenuissimo seu lineari, a genere Bolbocerate 

 tantum differt. 



The genus Kolbeus was synonymized under Bolbelasmus by Cart- 

 wright (1953, p. 97) because he believed that there were insufficient 

 morphological differences to warrant generic separation. While 

 Kolbeus arcuatus Bates lacked the posterior ma,rginal line on the 

 pronotum, Cartwright found it otherwise essentially similar to the 

 genus Bolbelasmus. For full particulars on distributional data, keys, 

 descriptions, and synonymy the reader should consult Cartwright's 

 revision (1953, p. 97). 



Bobelasmus arcuatus (Bates) 



Bolboceras arcuatus Bates, 1887, p. 111. Type, probably in British Museum. 

 Kolbeus arcuatus (Bates) Boucomont, 1911, p. 336. — Chapin, 1946, p. 79. 

 Bolbelasmus arcuatus (Bates) Cartwright, 1953, p. 98. 



This species has been collected in Mexico and Costa Rica from 

 May through July. One specimen in the Carnegie Museum bears 

 the label "Los Angeles,' California," but I would prefer to see other 

 specimens collected in the United States before considering arcuatus 

 a North American species. 



Bolbelasmus minor (Linell) 



Bradycinetus minor Linell, 1895, p. 723. Type, female, San Diego, Tex. (USNM). 

 Bolboceras minor (Linell) Schaeffer, 1906, p. 253. 

 Kolbeus minor (Linell) Chapin, 1946, p. 79. 

 Bolbelasmus minor (Linell) Cartwright, 1953, p. 100. 



