MACROMERIS. 103 



The species of Pompilido' generally make their nests in the 

 ground, iu burrows dug by the female, or in holes in trees, chinks 

 in the floors or walls of wooden houses, or in the hollows of 

 bamboos. Ar/euia, Pseudagenia, Paragenia, and, I suspect, Macro- 

 meris too, construct little earthen shells for nests. As a rule, 

 spiders are provided as food for the future brood, but one or two 

 species are \ re:latorial on crickets (Gryllidce), cockroaches (Blatta), 

 and Coleoptera. No parasitic forms are known among the 

 Pompilidce. 



Key to the Genera. 



A. Fore wing with three complete cubital cells. 



a. Th'irax below in front of the intermediate 



coxtie produced into lateral tubercles. . . . M.\cromeris, p. 103. 



b. Thorax below not tuberculate. 



a'. Second ventral segment with a trans- 

 verse furrow. 

 a^. Posterior tibiae grooved above, not 

 cylindrical. 

 d\ Posterior tibiae smooth, or with 

 only a few minute spines, never 

 serrate. 

 a*. Joints of anterior tarsi much 

 attenuated at base ; inter- 

 mediate coxae in c? produced 

 into remarkable tubercles ante- 

 riorly Paragenia, p. 105. 



6*. Joints of anterior tarsi normal, 

 not attenuate at base ; inter- 

 mediate coxae in S not tuber- 

 culate PSEUDAGENIA, p. 106. 



b^. Posterior tibiae more or less thickly 



spinose, in 2 generally serrate . . Salius, p. 122. 

 b-. Posterior tibiae cylindrical, with 



minute spines Pompilus (group 



b' . Second ventral segment without a trans- i'^/reofo), p. 169. 



verse furrow. 

 a^. Anterior tibiae and tarsi ciliated on 



the outer side Pompilus, p. 147. 



i^. Anterior tibiae and tarsi not spinose 



or ciliated Ceropales, p. 173. 



B. Fore wing with two complete cubital cells 



only Aporus, p. 177. 



Genus MACROMERIS. 



Macromeris, Lepel. Guer. Mag. Zool. i, pi. 29 (1831); id. Hipn. iii, 

 p. 463 (1845) ; Smith, Cat. iii, p. 181 ; Kohl, Verh. zool.-bot. Gcs. 

 Wien, 1884, p. 41. 



Type, M. splendida, Lepel. 



Range. The Oriental region, extending to New Guinea. 

 Head flat ; thorax massive, with lateral tubercles beneath, in 

 front of the intermediate coxa3, the tubercles somewhat iu the 



