8. HERIADES. 163 



Genus 8. HERIADES. 



Apis (pi), Linn. Syst. Nat. i. 954 (1766). 

 Hylseus ($t.),Fabr. Ent. Syst. ii. 302 (1793). 

 Anthophora (pi), Fair. Syst. Piez. 372 (1804). 

 Heriades,, Spin. Ins. Ligur. fasc. ii. (1808). 

 Ckelostorna (pt), Latr. Gen. Crust, et Ins. iv. (1809). 

 Trypetes, Schenck, Nass. Bien. 32 (1861). 



Head subglobose ; ocelli placed in a triangle forward on the ver- 

 tex ; antennae subclavate ; clypeus. transverse, with two rninute teeth 

 in the middle of its anterior margin ; labrum oblong, broadest at the 

 base, its apical margin slightly rounded; tongue elongate, only a 

 little longer than the labium; labial palpi 4-jointed-, the first and 

 second joints elongate, the first half the length of the second, which 

 tapers to an acute point ; the third and fourth joints minute, clavate, 

 and articulated near the apex of the second joint ; maxillary palpi 

 3 -jointed, the first joint short and stout, the second stout, subfusi- 

 form, and three times the length of the basal joint ; the third joint 

 slender, two thirds of the length of the second, and with two setse 

 at its apex. Thorax globose ; anterior wings with two submarginal 

 cells, the second receiving both recurrent nervures. Abdomen ob- 

 long, cylindric, and convex; furnished with a dense pollen-brush 

 beneath. 



1. Heriades truncornm. 



H. atra; abdominis basi transverse carinata, segmentorum margini- 

 bus albidis ; ano maris inflexo, inermi. 



Heriades truncorum, Spin. Ins. Ligur. fasc. ii. 9. 



Curtis, Brit. Ent. xi. tab. 504 $ . 



St.-Farg. Hym. ii. 404 tf $ . 



Zett. Ins. Lapp. 467. 



Smith, Zool. iv. 1447; Bees Great Brit. 192. 



Nyland. Notts, ur Sallsk. pro Faun, et Flo. Fenn. 271 ; Mon. 

 Heriades, Mem. Soc. Imp. Sc. Nat. Clierb. iv. 110. 



Thorns. Hym. Scand. ii. 263. 

 Apis truncorum, Linn. Syst. Nat. i. 954 2 > e t Cab: Mus. Linn. Soc. 



Kirby, Mon. Apum Angl. ii. 258 J ? ■ 

 Hylreus truncorum, Fabr. Ent. Syst. ii. 305. 



Panz. Faun. Germ. 64. 15 § . 

 Anthophora truncorum, Fabr. Syst. Piez. 379. 

 Megachile truncorum, Latr. Hist. Nat. his. iv. 52. 



Female. Length 2|-3 lines. — Black, closely and strongly punc- 

 tured ; the head as large as and a little wider than the thorax ; 

 the face with a little white pubescence on the sides ; the mandibles 

 stout and bidentate at the apex. Thorax with a thin cinereous 

 pubescence on the sides ; beneath, on the legs, and the apical joints 

 of the tarsi rufo-piceous ; wings fusco-hyaline, the nervures black. 

 Abdomen shining ; the apical margins of the segments with very 

 narrow white pubescent fasciae ; densely clothed beneath with pale 

 yellow pubescence. B.M. 



Male. Length 3 lines. — Closely resembles the female; the face 



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