664 



PROCEEDINGS OF THE NATIONAL MUSEUM 



type of L. opacicollis, a male (USNM type 64989), was also seen. 

 "S. Bernadino Kch. Cochise Co. VIII. Ai'iz." 



Specimens from the Mexican states of Jalisco, Mexico, and Colima 

 were observed with much reduced or completely obliterated elytral 

 fasciae. Beetles with this pattern may later be found to constitute 

 a valid subspecies. 



Figure 2. — Geographic distribution of Lexiphanes mexicanus (Jacoby). 



Syntypes of Lexiphanes sculptilis (Jacoby, 1880) (British Museum, 

 Natm'al History), were also seen. This species too may be a non- 

 fasciate form of L. mexicanus. Genitalic comparisons of L. mexicanus 

 and L. sculptilis indicated strong relationships between these two 

 species, as no distinguishable difference was seen. Since no intergi"ade 

 specimens between L. mexicanus and L. sculptilis were observed, 

 these two names were not synonymized. 



Male genitalia: The aedeagi of L. mexicanus, L. opacicollis, and L. 

 sculptilis were foimd to be indistinguishable. Fom'teen specimens 

 were dissected. 



Female genitalia: The spermatheca is similar in appearance to that 

 of L. guerini (fig. 10). The basal portion of this structure in L. 

 mexicanus is, however, more bulbous. Further, this structure in L. 



