220 Mr. E. Saunders' Synopsis of 



subtruncate at the apex ; genital armature stout, the sagittae strong 

 and forcipate (see PI. X., XI). 



There are two distinct divisions in this genus : in one 

 the males have the intermediate tarsi more or less pro- 

 duced, and densely clothed with hairs on one or more 

 joints ; in the other they have them simple : retusa and 

 pilipes belong to the 1st division, fiircata and quadri- 

 maculata belong to the 2nd, A. retusa, $• , is further 

 distinguished from the males of our other species in 

 having the posterior tibias furnished with a patella at the 

 base. 



1. Antliophora retusa, Linn. (PL X., figs. 7 — 7 h). 



Linn., Syst. Nat., ed. x., i., p. 575 ; Smith, Cat. Brit. 

 Hym., 2nd ed., p. 189 = Haworthana, Kirb. 



Head and thorax and first two segments of the abdomen in the 

 $ clothed with fulvous-brown hairs, the rest of the abdomen with 

 black ; J entirely clothed with black hairs ; calcaria pale ; inter- 

 mediate tarsi in the $ with the 1st joint only, densely clothed with 

 projecting black hairs. 



S' . Face clothed with pale hairs ; labrum and clypeus and sides 

 of the face below the antennse yellowish white, base of the clypeus 

 with two dark spots, separated by a narrow intervening pale line. 

 Antennae with the scape pale in front ; vertex of the head clothed 

 with fulvous-brown hairs. Thorax rather closely punctured, densely 

 clothed with fulvous-brown hairs, which are rather paler round its 

 edges ; wings very slightly dusky. Abdomen punctured, with the 

 first two segments clothed as the thorax ; the 3rd to the 7th clothed 

 with black hairs, with a rather paler fringe of hairs at the aj)ex ; 7th 

 narrow, truncate at the apex, and longitudmally rugose ; beneath 

 rather shining, clothed with grey and black hairs ; 7th segment 

 shining, dilated, thickened and truncate at the apex ; 8th bidentate, 

 with long apical hairs (for genitalia, &c., see PL X., figs. 7 — 76). 

 Legs with the femora and tibiae clothed with pale brownish hahs ; 

 calcaria pale ; tarsi testaceous, intermediate pair with the basal 

 joint densely clothed with projecting black hairs, the remaining 

 joints with only a few pale spinose hairs at the apex ; posterior 

 pair with the basal joint black and clothed with black hairs, except 

 at the extreme apex, where the hairs are golden ; the rest of the 

 joints testaceous. 



2 . Entirely black and clothed with black hairs, except the pale 

 calcaria and the posterior tibiae and tarsi, which have outwardly a 

 dense golden scopa ; mandibles bifid at the apex, the teeth rounded, 

 the outer one not much longer than the inner ; face transverse. 



