Insects. 1737 



and intermediate tibiae nigro-piceous ; the posterior tibiae and all the 

 tarsi ferruginous ; the floccus white, and the scopa pale fulvous. Ab- 

 domen sub-ovate, shining; the three basal segments have a lateral 

 patch of white hairs ; the anal fimbria fulvous. 



In general habit, there is a remarkable resemblance between this 

 and the preceding species, and had I only seen a single specimen, I 

 might have considered it an extreme variety, but the colour of the 

 legs differs too much for me to consider it such. I do not know the 

 male ; in Mr. Desvignes's possession there are two specimens, and I 

 have seen one or two more. I captured my own specimen some years 

 ago at Coomb Wood, Surrey ; some of those enumerated I believe 

 came from the same locality. 



Sp. 18. Andrena vitrea, Smith. 



Female.— (Length 6j lines). Black ; the face clothed with black 

 pubescence ; the cheeks and the vertex with brown-black. Thorax 

 thinly clothed with a pale rufous pubescence ; the tegulae dark piceous ; 

 the wings hyaline, very slightly clouded at their apical margins ; the 

 nervures testaceous ; the femora are fringed with pale rufous pubes- 

 cence; the floccus is of the same colour; the scopa is fulvous, bright- 

 est beneath ; the basal joint of the tarsi is dark ferruginous beneath. 

 Abdomen very smooth and shining; the margin of the basal segment 

 is rufo-piceous ; the apical fimbria is black ; beneath, the second seg- 

 ment has a rufous spot, in some individuals the whole segment is la- 

 terally more or less rufous ; the margins of the apical segments have 

 a rufous fringe. 



This species is rare ; Mr. Desvignes has some fine specimens in 

 his cabinet ; their locality is not known : the male has not been dis- 

 covered. 



Sp. 19. Andrena tibialis. 

 Melitta tibialis, Kirby. 



Female— (Length 6— 7J- lines). Black ; the face clothed with 

 pale pubescence nearly white, a little reddish-brown hair at the base 

 of the antennae. Thorax clothed with a rufo-fulvous pubescence ; 

 the tegulae piceous ; the wings subtestaceous, with their apical margins 

 clouded ; the femora have a white pubescence, which is also the co- 

 lour of the floccus; the posterior tibiae and the intermediate and' pos- 

 terior tarsi rufo-fulvous ; the scopa bright fulvous. Abdomen sub- 



