412 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



conditions similar to those described by Mr. 

 Waterhonse, at two localities in North Wales. 

 The male emerges in May (Mr. W. once took an 

 example in March), and the female occurs in May, 

 June and even in July. 



0. ccerulescens, Linn. — cenea, Sm. — 'Pretty frequent along 

 the Cheshire coast, B.C. ; Wallasey, E.C.T. ; Rock 

 Ferry, J.T.G. ; Chester, E.C.T. and R.N. ; Dela- 

 mere, E.C.T. 



0. fulviventris, Panz. — Has been taken at Crosby, 

 H.H.H.; Rock Ferry, J.T.G., and Wallasey, 

 E.C.T. 



O. aurulenta, Panz. — 'Taken freely breeding in snail 

 shells on the sandhills at Wallasey in 1855, 

 H.H.H. ; and similarly by Mr. J. T. Carrington 

 some years afterwards ; but search has been made 

 for it in vain during recent years.* 

 Stelis, Panz. — The three species found in Britain are 

 inquiline in the burrows of the genus Osmia, 

 though in other countries they attack Anthidium, 

 to which genus Stelis is very closely related. S. 

 phceoptera and aterrimma are associated with 0. 

 fulviventris, and the rare S. octomaculata with 0. 

 leucomelana. None of the species have yet been 

 recorded in our district, though some probably 

 » occur. S. aterrimma is not infrequent just out- 

 side our limits on the North Wales coast. 

 Anthidium, Fab. — Our one distinct looking British species 

 makes its cells in suitable holes which it may 

 find ready-made, such as the larval burrows of 

 Cossus lignijjerdi or of Aromia moschata ; these 

 the female lines with down, which she collects 



* Since these pages went to the press, the writer has turned up 

 the species again at Wallasey, frequenting flowers of the bramble. 



