1988] Carpenter & Wenzel — Mischocyttarus from Costa Rica 91 
Figs. 1-2. Metasomal petiole. 1, M. pelor, 1 IX. 2, M. fraudlulentus, 12X. 
Fig. 3. M. pelor, propodeum, 17X. Figs. 4-6. Hindtarsus. 4, M. alienus, 15X. 
5, M. fraudlulentus, 17X. 6, M. pelor, 1 IX. 
species at the couplet to which pelor keys. Both species were origi- 
nally described from Colombian specimens. Now, in addition to the 
type material mentioned in Richards (1978), there are two speci- 
mens and one nest of alienus and four specimens and two nests of 
fraudulentus in the British Museum, all determined by Richards. 
The alienus are from Bolivia (“La Paz, Caranavi 1000 m., 15-V- 
1979, M. Cooper”) and Costa Rica (“Cartago, Prov. Tapanti, 2 July 
1963 4000 ft., C. D. Michener” determined as “sp. nr. alienus the 
hindtarsi are missing). The fraudulentus are all from the type local- 
ity, Barbacoas in Div. Narino in Colombia, collected on 5-IV-1974, 
20-VII-1974 and 6-1-1975 by M. Cooper. Besides this material, three 
