OF THE HIND WINGS OF HYMENOPTEROUS INSECTS. 133 



Ophion (America) has 6. 5 grow together in a row, and 1 about the length of that row distant from 

 them, towards the base. There is something like the scar of a missing hook in the interval. 



Paniscus hiquinatus has 1. 



Paniscus glaucopterus has 1 . 



Paniscus (English) (fig. 19 a) has 1, with a few very strong short hairs in a line on either side, differing 

 from the fringe of hairs which cease when these begin. They seem intermediate in form 

 between the hooks and hairs. 



Rhyssa has 1 (hook lost). 

 Ephialtes has 1. 

 Osprynchotus has 6. 



Tryphon has 1. 



Pimpla (N. America) has 1,2? 



Pinipla (England) has 1. 



Pimpla Turionellce has 1 \ 



T,. , . . , ^ } nearly straight. 



Pimpla varicorms has 1 J "^ ° 



In Tragus (fig. 23) there is one ; fine and quite straight, on the margin of the membrane 



of the wing, beyond tlie end of the upper division of the costal nerve, about midAvay 



between the base of tlie wing and the distal hooks. 

 In Mesostenus there are 3-4 ? on the membrane as above, but not quite at the margin ; 



rather nearer to the base than to the distal hooks. 

 In Crypttis (fig. 14) they are on the membrane, not marginal, midway between the base 



and the distal hooks, slightly curved. In another species there are 4, large and 

 - strong, with a double curve, nearer the base than the centre of the wing. The margin 



of the wing is bent (accidentally ?) ; and I cannot tell whether they are on the nerve or 



the membrane. There are strong hairs on either side of the hooks in a line with them. 

 In Ilemiteles there is one ; fine, straight, and erect, nearly on the margin of the membrane 



of the wing, above the costal nerve, rather nearer to the base than to the distal hooks. 

 In the following species of the tribe Fossores they are large, strong, and curved at the 

 tip, and situated on the upper branch of the costal nerve. 

 In PoMPiLiD^, out of five exotic species of Fompihis, two have sub-basal hooks (2 ?, 7-9 r 



in number) ; but, owing to the darkness of the wings and the dense covering of haii', 



it is not easy to ascertain the number. 



Macromeris violaceus has 14. 



Pepsis (Brazil). Of six species, four have sub-basal hairs : pretiosa has 1 ; apicalis 8 ; viridisetosa 5 ? 

 limbata 7? (fig. 32 ^i). 



In Sphegid^ they are of the same form as in Pompilid^e. 



Sphex (Brazil) has 7 or more, close together, on the margin of upper branch of costal 

 nerve, near base. 



Clilorion (India, 1) has 17, near margin of wing, commencing further from the base than 

 in Sphex, growing at irregular intervals. 



Ghlorion (India, 2) (fig. 33 b) has 22-23 ? near margin of wing, commencing further from 

 the base than in Sphex, at irregular intervals. 



In Astata Boops (LAURiDiE) (fig. 35 a) they are 7 in niimber, growing on the costal nerve, at 

 rather wide intervals, near the distal hooks. Very strong. Those nearest the base 

 almost straight ; those towards the distal hooks sharply curved at the tip. A row 

 of strong straight hairs grows in a line with them on either side, and between them. 



