26 ANDEENID^. 



by exposure to light — so much so, that a bright fulvous insect becomes 

 quite grey or cinereous ; it must therefore be borne in mind that 

 the individuals described are only such as are in fine condition. 



The genus Andrena contains several species which, in the neura- 

 tion of the wings, differ somewhat from that of the type ; these will 

 be found to agree with the second type of neuration, in which the 

 first recurrent nervure is received by the second submarginal cell, 

 towards the second transverse cubital nervure, that is to say beyond 

 the middle. The following species belong to it : — A.pilipes, varians, 

 helvola, fucata, clarJcella, fulva, lapponica, smithella, clenticulata, and 

 argentata. 



The geographical distribution of these bees is very extensive; they 

 range throughout Europe, species being found as far north as Lap- 

 land: numerous species are known from Africa, principally from 

 Algeria ; they are found in the Azores, in Madeira, the Canaries, 

 and Cape- Yerd Islands ; they also occur in Egypt ; Asiatic species 

 have been found in northern India, in China, and Japan ; a 

 single species has occurred in New Zealand, and one or two are 

 known from Australia. No species has been found in South America ; 

 but they are again met with in Mexico and California ; they occur 

 in Vancouver's Island and British Columbia, and are numerous in 

 the United States, where are found the counterparts of several 

 European species, as A. pilipes, A. clarkella, A. nitida, A. tho- 

 raeica, &c. 



Div. I. The abdomen in one or both sexes more or less red. 



1. Andrena hattorfiana. 



A. atra, glabriuscula ; abdomine nigro, cingulo antico rufo, ano 

 scopaque fulvis. 



Andrena hattorfiana, Fabr. Syst. Piez. 325 £ • 



Spin. Ins. Liyur. i. 121. 



St.-Farg. Hym. ii. 254 <$ $ . 



Nyland. Notts, tir Sdllsh. pro Faun, et Flo. Fenn. i. 208. 



Smith, Bees Great Brit. 50. 



Schenck, Nass. Bien. 234. 



Thorns. Opusc. Ent. 142 ; Hym. Scand. ii. 72. 

 Nomada hattorfiana, Fabr. Ent. Syst. ii. 349. 

 Andrena equestris, Panz. Faun. Germ. 46. 17 $ . 

 Melitta lathamana, Kirby, Mon. Apum Angl. ii. 83 $ . 

 Melitta hsemorrhoidalis, Kirby, lib. cit. ii. 141 c? $ var. 

 Andrena hsemorrhoidalis, Smith, Zool. v. 1664. 



Female. Length 6-8 lines. — Black; head: the face on each side, 

 below the antennas, with cinereous pubescence ; a line of glittering- 

 white pile close to the inner margin of the eyes ; the nagellum 

 fulvous beneath beyond the third joint. Thorax closely and finely 

 punctured ; the sides, beneath, and the legs with a sparing 

 cinereous pubescence. Wings fulvo-hyaline, the tegulse and 

 nervures rufo-piceous ; the scopa on the posterior tibiae and base 

 of the tarsi pale fulvous; the apical joints of the tarsi ferruginous ; 



