HYMENOPTERA. 219 



spine slender and acute, shorter than the lateral spines, continued 

 upwards as a carina to the base of the segment, 



Hab. Interior of South Africa. (Presented by the Earl of Derby.) 



Genus 16. CHELOSTOMA. 



Apis, pt., Linn. Faun. Suec. 419 (176]). 

 Hyla-us, pt., Fabr. Ent. Syst. ii. 302 (1793). 

 Anthophora, pt., Fabr. Syst. Piez. 372 (1804). 

 Chelostoma, Latr. Gen. Crust. Ins. iv. 161 (1809). 

 Heriades, pt.. Spin. Ins. Ligur. fasc. ii. 9 (1808). 



The labial palpi 4-jointed, the basal joint about one-third the 

 length of the second, the thu-d joint in a line with the second, 

 the fourth placed at the side and near the ajjex of the third joint. 

 The maxillaiy palpi 3-jointed, the joints minute and subovate. 



1. Chelostoma florisomne. B.M. 



Apis florisomnis, Linn. Faun. Suec. 1704 (? , and Cab. Mus. Linn. 

 Soc. 



Scop. Ent. Cam. p. 299. 796. f. 796. 



Fabr. Syst. Ent. p. 387. 55. 



Kirby, Mon. Ap. Angl. ii. 253. 49. 

 Apis maxillosa, Linn. Syst. Nat. i. 954. 11 ? , andCab. Mus. Linn. 

 Soc. 



Fabr. Mantis, i. 305. 86. 



Kirby, Mon. Ap. Angl. ii. 251. 48. 

 Hylaeus florisomnis, Fabr. Ent. Syst. ii. 304. 5 i . 



Panz. Faun. Germ. 46. 13 ; Syst. Piez. p. 319. 3. 

 Hylaeus maxillosus, Fabr. Ent. Syst. ii. 303. 4 $ . 



Panz. Faun. Germ. 53. 17. 

 Anthophora truncorum, Fabr. Syst. Piez. 379. 29. var. /3 J . 

 Megachile maxillosa, Latr. Hist. Nat. xiv. 51. 1 c? ? . 

 Megachile florisomnis. Spin. Ins. Lig. fasc. i. 134. 1. 

 Chelostoma maxillosa, Latr. Gen. Crust, et Ins. iv. 162. 



Brulle, Exped. Sc. Moree, iii. 342. 757. 



Blanch. Hist. Nat. Ins. iii. 409. 



St.Farg. Hym. ii.407. 1. 

 Chelostoma florisomnis, Curtis, Brit. Ent. xiv. t. 628 (? . 



Smith, Zool. iv. 1445. 1. 

 Heriades maxillosa, Zett. Ins. Lapp. 467. 2. 



Nylund. Ap. Boreal, p. 268. 1 ; Revis. Ap. Boreal, p. 277- 2. 

 Chelostoma florisomne, Eversm. Bull. Mosc. xv. 74. 3. 



Hab. Britain ; France ; Germany ; Morea ; Denmark ; Russia ; 

 Sweden ; Finland ; Lapland. 



