BEES OF GREAT BRITAIN. 109 



Genus 7. CILISSA. 



Andrena, pt., Fabr. Ent. Syst. ii. 307 (1793). 



Melitta, pt., Kir by, Mon. Ap. Angl. i. 140. t. 3**e. f. 8, 9 (1802). 



Cilissa, Leach, Edin. Encycl. 9 (1812). 



Kirbya, St. Farg. Hym. ii. 145 (1841) 



Anthophora, pt., Fabr. Syst. Piez. 374 (1804). 



Head transverse, the ocelli placed in a curve on the vertex ; 

 the flagellum of the antennae filiform, the apical joint obliquely 

 truncate ; the inentum obtuse at the base, and acute in the 

 middle at the apex ; the labial palpi four-jointed, not quite so 

 long as the labium ; the labiura lanceolate, acute at the apex ; 

 the paraglossae minute. The maxillary palpi six-jointed. The 

 wings as in the genus Andrena. 



The economy of this genus of bees is precisely similar to that 

 of the genus Andrena ; we are only acquainted with three species 

 which inhabit Europe, two of which occur in England ; a third 

 species occurs in Sweden, and a fourth in the United States. 

 These insects are of rare occurrence ; the C. leporina occurs but 

 rarely in the neighbourhood of London ; it burrows in sandy 

 banks ; in the month of July 1852 a small colony was discovered 

 on Hampstead Heath. 



1. Cilissa haemorrhoidalis. 



C. atra, pallide subpubescens, thoracis limbo fulvescenti ; abdo- 

 mine ovato, basi retuso, ano fulvo-aureo. 



Andrena haemorrhoidalis, Fabr. Ent. Syst. ii. 313. 25 $ ; Syst. Piez. 

 p. 327. 24. 



Panz. Faun. Germ. 65. 20. 



Zett. Ins. Lapp. p. 459. 1. 

 Melitta chrysura, Kirby, Mon. Ap. Angl. ii. 172. 110 < . 



SI. Farg. Hym. ii. 214. 2. 

 Cilissa hsemorrhoidalis, Leach, Edin. Encycl. ix. 155. 



Smith, Zool. vi. 2207. 1. 



Nyland. Revis. Ap. Boreal, p 268. 3. 

 Kirbya chrysura, St. Farg. Hym. ii. 146. 2. 



Nyland. Ap. Boreal, p. 246. 1. 



Female. Length 5-6 lines. Black; the face clothed with 

 short pale fulvous pubescence; the flagellum, except the ex- 

 treme base, fulvo-piceous beneath ; the margin of the vertex 

 fringed with black pubescence. Thorax : the middle of the 



