Yorkshire Naturalists at Harwood Dale. 



Lindhead Beck. It would be interesting- to know how far this 

 observation is correct, and, if correct, what is the determining- 

 factor, e.g-., velocity, depth, temperature, or relative purity of 

 water, and the presence or absence of alg^ae. 



Both species and individuals were more numerous in the 

 valleys above Hackness than on the drift near Lindhead Barn, 

 and the latter ag-ain was more productive than the Cloughton 

 Moor ravine and Oxdale. Such variation in distribution has 

 yet to be explained, and there appears to be an opportunity in 

 a district which presents so strong-ly marked differences of soil 

 and vegetation of acquiring facts which will enable other workers 

 to form definite conclusions. 



Mr. G. T. Porritt, F.L.S., F.E.S., reported that the only 

 lepidopteron worthy of note taken was the larva of Plusia 

 interragationis , though a number of common species were also 

 observed. 



Mr. M. L. Thompson reports that, besides himself, the 

 coleopterists present were Messrs. H. Ostheide and W. Pearson. 

 After working over the moor for some time, a descent was made 

 by the adjoining gill into Whisperdale. Traversing this beauti- 

 ful valley Hackness was reached later in the afternoon. The 

 following: beetles were met with along: the route :— 



Carabus violaceus L. 

 Carahiis arvetisis F. 

 Nehria brevicollis F. 

 Lor ice r a p Hi corn is F. 

 Pterostichiis iiigrita F. 

 Cercyon hcBmorrhoidalis Herbst. 

 Cercyon vielanocephalus L. 

 Aleochara lanuginosa Grav. 

 Tachyporus hypnoriim F. 

 Ocypus morio Grav. 

 Philofithus splendens F. 

 Philonthus deconis Grav. 

 Anthobiuni torqnatutn Marsh. 

 Necrophoriis mortiiormn F. 

 Silpha rugosa L. 

 Coccijiella y-punctata L. 

 Brachyptcriis urticce F. 

 Epurcea cestiva L. 

 Meligethes ceneiis L. 

 Rhizophagiis dispar Gyll. 

 Lathridius lardarius DeGeer. 

 Coninomns tiodifer Westw. 

 Micrambe vini Panz. 

 Aphodiiis punctato-sulcaius Stm. 

 Aphodins luridus F. 



Geotrupes stercorarius L, 

 Geotrupes syh)aticus Panz. 

 Athoiis hcemorrhoidalis F. 

 Adrastus limabatus F. 

 Agriotes pallidiilus 111. 

 Helodes marginata F. 

 Rhagonycha pallida F. 

 Cis boleti Scop. 

 Clytiis arieiis L. 

 Rhagium bifasciatuni F. 

 Chrysomela polita L. 

 Pleciroscelis concinna Marsh. 

 Anaspis frontalis L. 

 Depo rails bet nice L. 

 Apion ulicis Forst. 

 Otiorrhynchus picipes F. 

 Polydrnsiis cerviniis L. 

 Phyllobius calcaratus F. 

 Phyllobius pyri L. 

 Phyllobius argeiitatiis L. 

 Barynotus elevatus Marsh. 

 Anoplus planiaris Naez. 

 Cceliodes rubiciindiis Herbst. 

 Cceliodes quadrimacidatiis L. 

 Ceuthorrhynchus contractus Marsh. 



Naturalist, 



