1976] 
Callan — Gorytine Wasps in Trinidad 
327 
was studied by Professor R. M. Bohart, who identified it as //. 
vespoides. These specimens were taken between 1942 and 1951 
at 5 different nesting sites in the Northern and Central Ranges. 
Two females collected in March 1935 in Trinidad without specific 
locality by D. Vesey-FitzGerald are also in the Museum of Com- 
parative Zoology, Harvard University. 
On 16 May 1942 I discovered several individuals of this species 
nesting in a small clearing in the forest at Cumaca. The wasps 
were in the course of digging their nests in a flat area of friable 
sand at the base of a sandy bank. The fore-legs were used in dig- 
ging the nest. The female came out of the entrance backwards, 
scraping out the sand with the fore-legs, which worked together, 
and sweeping it away. When disturbed the wasp rose silently into 
the air. Then it descended slowly to the sand near the nest, walked 
a few steps to the entrance with wings elevated at a strong angle 
to the body, entered the nest and continued digging. Three females 
were captured, but none were observed bringing in prey. The wasps 
were nesting in company with Cerceris dilatata Spinola and Bi~ 
cyrtes variegata (Olivier). The former species was provisioning 
its nest in the sandy bank with buprestid prey, and several nests 
of the latter were intermingled with those of H, vespoides. 
On 4 April 1943 I found this species nesting in the fine, loose 
sand on the floor of a sandpit at Mundo Nuevo. Several wasps 
were seen provisioning their nests. Two females were captured, 
both carrying adults of the large treehopper Umbonia spinosa. 
They descended slowly and silently to their nests holding the 
prey with their middle legs tightly clasped beneath the body and 
passed it to the hind legs as they entered the nest. The wasps were 
nesting in association with Bembecinus agilis (F. Smith), which 
was storing its nests with cicadellid prey. 
I encountered on 25 December 1943 what appeared to be this 
species nesting in the floor of the same sandpit at Talparo, where 
I had found H. umbonieida nesting in 1942. A single female was 
collected, which was identified by Professor Bohart as H. fuscus 
(Taschenberg), a species described from Brazil. Pate (1941) stated, 
in describing H. umbonieida , that it was somewhat intermediate 
between H. fuscus and H. robustus (Handlirsch), agreeing with 
the former in appearance, but being apparently most closely allied 
to the latter. In connection with studies on other wasps, I visited 
the Talparo sandpit again on 26 July 1945 and noticed a sinele 
