THE INSECT FAUNA OF GROUSE MOORS 151 



genus Ceratopogon, one species (at least) of which was very common 

 in the marshy spots frequented by the young chicks.) 



CRICOTOPUS, sp.- -Four males and four females belonging to this 

 genus were taken at Ballindalloch, but I have not been able 

 to assign them to any of the described species. 



ORTHOCLADIUS DOLENS, Wlk. (niveipennis, Ztt). Seven specimens 

 of each sex, Burley-in-Wharfedale. 



ORTHOCLADIUS, spp. Two females (each of a separate species), 

 Burley-in-Wharfedale. 



METRIOCNEMUS FUSCIPES, Mg. One male, Burley-in-Wharfedale. 



DIAMESA OBSCURIMANUS, Mg. One male, Dunachton ; one male, 

 Ballindalloch. 



TANYPUS CHOREUS, Mg. One male, Burley-in-Wharfedale. 



* CERATOPOGON FLAVIPES, Mg. - One female, Ballindalloch. 

 Remains of this genus were found in many of the crops and 

 gizzards, especially at Uunachton, and as the present species 

 is common in the marshy areas where the chicks feed, it may 

 be the one represented. 



CERATOPOGON, sp. Near flavipes, but quite distinct, neuration 

 different, hairs on antennal joints much longer, legs darker, 

 and whole insect smaller. Six males and eight females taken 

 at Dunachton. 



CERATOPOGON FEMORATUS, Mg. One female, Ballindalloch. 

 CERATOPOGON, sp. Near gracitipes, Winn. One male, Dunachton. 



Family CULICID^E (Gnats). 

 CULEX PIPIENS, L. Two males, Dunachton. 



*Family LIMNOBIIDvE. 



The Crane-flies belonging to this family form a large proportion 

 of the insect food of the young grouse. There is a tolerable variety 

 of species in the marshy ground at the sources of the various 

 rivulets, and being fairly large insects they are attractive to the eyes 

 of the chicks. In some cases, as noted below, their crops were 

 absolutely gorged with specimens of the small species known as 

 Molophilus ater. 



LIMNOBIA PNITIDA, Vert: A single male, presumably of this 

 species, was taken in marshy ground on the moors above 

 Carr Bridge. 



DICRANOMYIA MORio, Fab. Several males, Dunachton. 



