2206 Insects. 



diate and posterior pairs at their base, and also their tarsi at their 

 base, yellow. Abdomen oblong-ovate, closely and distinctly punc- 

 tured. 



This species I took some years ago at Birch Wood, in Kent, since 

 which I have not met with it. 



Sp. 8. Hyl^eus hyalinatus, Smith, Ent. Trans, iv. 



Female. — (Length 2 J lines). Black ; the face has a yellow spot 

 touching the eyes, a little below the base of the antennae. Thorax 

 closely punctured ; a minute white spot in front of the tegulae ; wings 

 subhyaline, splendidly iridescent ; the posterior tibiae pale yellow at 

 their base. Abdomen ovate, smooth and shining, delicately punc- 

 tured. 



Male. — (Length 2j lines). Black ; the face coarsely punctured, 

 cream-coloured ; the antennae fulvous beneath, the two basal joints 

 black. Thorax rather coarsely punctured, pubescent, particularly the 

 metathorax, and beneath ; a spot in front of the tegulae, the tubercles, 

 the anterior tibiae in front, the intermediate and posterior pairs at 

 their base, and all the tarsi, pale yellow ; the intermediate and poste- 

 rior tarsi have the apical joints black, the anterior rufous ; the wings 

 are clear hyaline and splendidly iridescent. Abdomen ovate, smooth 

 and shining, finely pubescent, observable in certain lights. 



This species was first discovered by Mr. Thwaites, who bred it 

 from bramble-sticks. I have also taken it near London. It is not so 

 numerous as the generality of this genus of bees. 



Sp. 9. HYL^EUS S1GNATUS. 



Prosopis signata, St. Fargeau. Sphex signata, Panzer. Melitta 



signata, Kirby. 



Female. — (Length 3j lines). Black ; the antennae fulvous beneath ; 

 the scape black ; the face has a fulvous line along the inner orbits of 

 the eyes. Thorax, a yellow spot on the tegulae and tubercles ; the 

 wings hyaline ; the nervures black ; the base of all the tibiae and the 

 anterior tibiae in front more or less rufous. Abdomen shining, closely 

 and finely punctured; a patch of white pubescence on the lateral 

 margins of the basal segment ; the apical segment is also pubescent. 



Male. — Length 3 — 3 J lines). Black ; the face pale yellow or white ; 

 the antennae fulvous beneath. Thorax clothed at the sides and be- 

 neath with a thin, fine, short, white pubescence ; the anterior tibiae 



