SPHEX.— EHINOPSIS. 37 



Hah. Noeth Ambkica, United States 1 2 3 . — Mexico, Presidio (Forrer), Michoacan 2 ; 

 Panama, Volcan de Chiriqui 2000 to 6000 feet (Champion). — South Ameeica 1 , Brazil \ 

 Amazons \ Buenos Ayres 2 , Monte Video 2 ; Antilles 2 , St. Thomas \ Jamaica \ Cuba 1 . 



Fam. AMPULICID51. 



AMPULEX. 



Ampulex, Jurine, Nouv. Meth. de Class, les Hymen, et les Dipt. p. 132 (1807). 



This genus was founded on Chlorion eompressum, Fabr., and Ampulex fasciata, J mine. 

 The former has four distinct cubital cellules, and the body shining metallic green, 

 coppery, or blue ; while the latter has only three cubital cellules, and the body is not 

 metallic or blue or green. A. fasciata appears to me to belong to the genus Bhinopsis, 

 Westw., of which we have one species in our region. Ampulex is found in the Oriental, 

 Ethiopian, and Neotropical regions ; it preys on species of Blattidse. 



A. 



Ampulex angusticollis. (Tab. III. figg. 13, $ ; 13 «, s .) 



Ampulex angusticollis, Spinola, Ann. Soe. Ent. Fr. x. p. 108 ( ? ) 1 ; Smith, Cat. Hymen. Ins. iv. 



p. 27V. 

 Chlorion angusticolle, Westw. Arc. Ent. ii. p. 66 3 . 



Hob. Costa Rica, Cache (Bogers); Panama, Bugaba, Volcan de Chiriqui 2000 to 

 3000 feet (Champion). — Guiana, Cayenne 123 ; Beazil, Para 2 . 



This is a common species in Costa Rica and the State of Panama ; it varies greatly 

 in size. 



EHINOPSIS. 



Rhinopsis, Westwood, Are. Ent. ii. p. 68 (1843-1845) ; Cresson, Trans. Am. Ent. Soc. 1887, 

 Suppl. part 1, p. 113. 



Rhinopsis was founded on a North-American species (B. abbottii), the only one 

 (unless the European Ampulex fasciata, Jurine, is regarded as belonging to it) hitherto 

 known. By Cresson the genus is formed into a distinct " family," separated from the 

 Sphegidse and other Fossores (except the Pemphredonidse) by the wings having only 

 " two complete cubital cellules " ; but that definition would cut off Bhinopsis from 

 Ampulex, to which it is clearly allied. A better point of distinction between Ampulex 

 and the other Fossores consists in the first, instead of the second, cubital cellule 

 receiving the first recurrent nervure. The rostrate clypeus, the large free mandibles, 

 the elongated prothorax, and the large cubital metathorax, which usually ends in two 

 teeth laterally, are also characteristic of Ampulex. 



