THE BRITISH NATURALIST. 



77 



Fowler's work on " The Coleoptera of the British Isles," and, in 

 acknowledging this service, the author states that "the Rev. W. F. 

 Johnson is doing good work at the Irish Coleoptera." 



LITHOCOLLETES CERASICOLLA. 



BY H. H. CORBETT. 

 A SPECIES NEW TO THE BRITISH FAUNA, AT DONCASTER. 1 have 



pleasure in adding the above species to the British list. Last autumn 

 I collected the mines of the larva in the leaves of Prunus avium, and 

 I have now bred a few of the imagines. One of the latter I have 

 sent to Mr. Barrett, who confirms my opinion, that it is undoubtedly 

 Lith. cerasicolella (Her-Schaff). Appended is a description of the 

 mine, the larva, and the imago. 



The mine is elongate and is placed between the lateral veins of the 

 leaf of P. avium, reaching from near the mid-rib towards the margin. 



The larva is pale yellow, second segment orange yellow ; head dark 

 brown or black ; legs grey. 



The imago belongs to the Pomifoliella group, and is like Spinicolella, 

 but the following points serve to distinguish it from that species. 



The first dorsal streak is more gradually curved and its apex does 

 not point in a line continuous with the basal line. The third dorsal 

 streak is very small, and never joined to the third costal streak. 

 The third and fourth costal streaks are united by some white scales 

 above the sub-apical black spot. 



19, Hallgate, Doncastev. 



SUGARING : 

 A PROPOSAL FOR UNITED OBSERVATION. 



BY JOHN E. ROBSON, F.E.S. 



One of the most puzzling phenomena in connection with the 

 collection of Lepidoptera is the extraordinary manner in which 

 insects come to " sugar." One season will give excellent results 

 everywhere, another scarcely produces an insect. One night the 

 sweetened bait will be covered with moths, the next, w T e spread it 

 altogether in vain. Sometimes, as if by signal, the moths, that are 

 feeding too eagerly to heed the glare of the' collectors' lantern, will 

 suddenly raise their wings and take flight. Another peculiarity 

 to be noticed, is that one species will perhaps swarm at the sugar for 

 one or more evenings and at no other time, thus X. lithoxylea visited 

 my bait in considerable numbers one night last year, but not a solitary 

 specimen appeared on any other evening. So, too, on certain nights, 



