PLATE V 



No. I. Clasp of Ae. hesperiaris (inside view). 



No. 2. Clasp of M. yuccae yuccae (inside view). 



No. 3. Clasp of M. yuccae coloradensis (inside view). 



No. 4. Clasp of M. streckeri streckeri. 



No. 5. Clasp of M. neumoegeni. 



No. 6. Clasp of M. aryxna. 



No. 7. Clasp of M. polingi. 



No. 8. Clasp of M. smithi. 



