NOTES ON HYMENOPTERA. 21 



as follows : the LiniiEean type is in the Cabinet of the Linnsean 

 Society, 



Colletes Clinic ularia. — Black : head and thorax densely 

 pubescent ; abdomen shining and less pubescent. 



Female.— The head narrower than the thorax, with 

 blackish-brown pubescence on the vertex ; that on the face of 

 a richer brown, on the clypeus it is paler; the latter fre- 

 quently rubbed off by the bee in burrowing. The thorax 

 with a thick clothing of dark-brown hair above and of a 

 paler colour beneath ; the claws of the tarsi with a single 

 tooth and rufo-testaceous ; wings subhyaline and with dark 

 ferruginous nervures. 



Male. — Length 5 — 6 Unes. — This sex has a resemblance to 

 the female, but is usually about the size of the smallest 

 examples; it is less bulky, and the geneial colour of the 

 pubescence is of a paler hue ; the antennae longer, reaching 

 to the metathorax ; the legs more slender, and usually with 

 a silvery-grey pubescence; the wings clear hyaline, with the 

 nervures paler. 



The pubescence of this species soon fades from exposure, 

 and in w^orn specimens, particularly of the males, it becomes 

 more or less hoary. 



This insect has a strong resemblance to some species of the 

 genus Andrena, such as A. thoracica and A. Clarkella, 

 and might perplex young students ; but if the tongue be 

 extracted, or exposed, it will be found to be bilobate and 

 obtuse at the apex ; in Andrena it is pointed and lanceolate 

 inform; the neuration of the wings is similar in both genera. 



The capture of this insect is due to Mr. Isaac Cooke, son 

 of Mr. Nicholas Cooke, of Liverpool, the Coleopterist ; it 

 was taken near Ventnor in May, 1867 ; four males and five 

 females occurred at that time. In March, 1869, Mr. Cooke 

 sent a pair of this bee to me for identification, I knew them 



