488 THE AMERICAN NATURALIST. 
June 19, at flowers of Cnicus, 19; West Fork of Gila River, 
July 17 (Townsend), 1 9. 
(3) Lithurgus apicalis Cresson, 1875. — Santa Fé, June 
20, at yellow Opuntia flowers, 2 3 ; August 2, at flowers of 
Cleome serrulata (Capparidacez), I 4 ; Santa Fé Cañon, August 
II, ; 7700 ft, inside flowers of Opuntia arborescens in wet 
weather, males; 7600 ft, at flowers of Cnicus ochrocentrus 
(purple-flowered form), females; West Fork of Gila River, 
July 16, both sexes (Townsend). The insect formerly re- 
ported from the Mesilla Valley as apicalis is gibbosus. 
These are not the only bees which habitually visit cacti. 
Heriades (Trypetes) gracilior Ckll., and Ashmeadiella opuntie 
(Ckll.) visit the flowers of Opuntia in the Organ Mountains in 
May ; while Ashmeadiella cactorum (Ckll.) visits Cactus (i.e. 
Mammillaria) at Santa Fé in July.! u 
NEW MEXICO AGRICULTURAL EXPERIMENT STATION, 
MESILLA PARK, N. M., Feb. 25, 1900. 
1 Since the above was written I have found the bee Agapostemon texanus 
Cress., 9, visiting flowers of Cereus peana d det. Wooton, and of 
sra Sp-, prob. fendleri, Engelm., in the Mesi Valley; it burrows down among 
e stamens so as to be quite lost to sight. prda green bee, Augochlora 
MUSOR Ckll., was found by Townsend at La Cueva, Organ Mts., visiting 
owers of Echinocactus wislizenii. 
