112 CRESSON TYPES OF HYMENOPTERA 



armaticeps (Megachile), Trans. Am. Ent. Soc, ii, 296, 9. 



Cuba. In Gundlach Collection. 

 armaticeps (Osmia), Trans. Am. Ent. Soc, vii, 104, 9. 



2531. Colorado. In good condition. 

 armillatus (Centris), Trans. Am. Ent. Soc, ii, 298, <?. 



Cuba. In Gundlach Collection. 

 ashtoni (Apathus), Proc Ent. Soc. Phil., iii, 42, 9. 



2684. New York. In good condition. 

 atrata (Anthophora), Proc. Ent. Soc. Phil., iv, 189, cf. 



2257. Cuba. In good condition. 

 atriceps (Calliopsis), Trans. Am. Ent. Soc, vii, 67, cf . 



2184. California. In good condition. 



atriceps (Megachile), Proc. Ent. Soc. Phil., iv, 176, 9- 



2455. Cuba. In good condition. 

 atricornis (Calliopsis), Trans. Am. Ent. Soc, vii, 67, cf • 



2185. Colorado. In good condition. 



atrifrons (Anthidium), Trans. Am. Ent. Soc, i, 387, 9. 



2726. New Mexico. In good condition. 

 atripes (Anthidium), Trans. Am. Ent. Soc, vii, 205, cc 



2654. Nevada. Left antenna off. Described as a variety of emarginatum Say. 

 atripes (Melissodes), Trans. Am. Ent. Soc, iv, 275, 9. 



Texas. In Belfrage Collection, U. S. N. M. "Head gone." 

 atriventre (Anthidium), Trans. Am. Ent. Soc, vii, ill, 9. 



2392. California. In good condition. 

 atriventris (Osmia), Proc. Ent. Soc. Phil., iii, 29, 9. 



2516. Connecticut. Right antenna off. 

 aurigenia (Melissodes), Proc. Acad. Nat. Sci. Phil., 1878, 212 9 cc 



2332 9 . Colorado. In good condition. 

 australis (Melissodes), Proc Acad. Nat. Sci. Phil., 1878, 214, 9 cf. 



2356 9. Colorado. In good condition. 

 australis (Stelis), Trans. Am. Ent. Soc, vii, 92, 9. 



2475. Georgia. In good condition. 

 avara (Megachile), Trans. Am. Ent. Soc, vii, 123, cf • 



2416. Georgia. In good condition. 

 azteca (Ceratina), Trans. Am. Ent. Soc, vii, 131, 9 cf. 



2470 9 . Mexico. In good condition. 

 azteca (Coelioxys), Trans. Am. Ent. Soc, vii, 100, 9. 



2508. Mexico. In good condition. 

 azteca (Megachile), Trans. Am. Ent. Soc, vii, 119, 9 cf. 



2456 cf • Mexico. In good condition. 

 azteca (Osmia), Trans. Am. Ent. Soc, vii, 105, 9. 



2542. Mexico. Extreme tip of right antenna off. 

 azteca (Xylocopa), Trans. Am. Ent. Soc, vii, 133, 9. 



2618. Mexico. In good condition. 



