30 DUMBARTONSHIRE EXCURSIONS. 
islands included within the county of Dumbarton, will be dealt 
with. 
Luss itself, and the glen behind the village, received a visit on 
6th June, 1903, when fine weather favoured the large number of 
members who attended the excursion. The glen contains much 
natural birch, holly, and aspen, and the woods afford shelter to a 
varied and interesting flora, but nothing of special botanical 
interest was recorded. A nest of the wood-wren (Phylloscopus 
stbilatrix) with eggs was seen; and the occurrence of the king- 
fisher (Adcedo ispida), on the Luss Water, was noted. The 
following list of Diptera (section Tipulide) was compiled by 
members of the entomological section, as having been noted at 
this excursion :— 
Limnobia nubeculosa, Mg.(common). L. bicolor, Mg. 
L. flavipes, F. L. nemoralis, Mg. 
Dicranomyia chorea, Mg. Ula pilosa, Schum. (common). 
D. pilipennis, Egg. Amalopis immaculata, Mg. 
Lipsothrix errans, Wlk. (common). A. unicolor, Schum. (very common 
Empeda nubila, Schum. at the head of the glen). 
Gonioinyia (sp. ?) Dolichopeza sylvicola, Curt. (in 
Molophilus murinus, Mg. (in clouds great numbers). 
at two places in the glen). Pachyrrhina annulicornis, Mg. 
M. propinquus, Egg. Tipula longicornis, Schum. 
Rhypholophus nodulosus, Meg. T. varipennis, Mg. 
Erioptera teenionota, Mg. T. hortulana, Mg. 
Ephelia marmorata, Mg. T. flavolineata, Mg. (one female). 
E. submarmorata, Ver. T. vernalis, Mg. 
Limnophila lineolella, Ver. T. gigantea, Schrk. (common). 
Inchmoan was again visited on 18th June, 1898, when it was 
observed that the nesting colony of the lesser black-backed gull 
appeared to be diminishing in numbers, and evidences were 
apparent that the nests had been much disturbed and many eggs 
taken. This island used to be frequented by a large number of 
species of birds, and it is to be regretted that it has not been 
preserved as a sanctuary during the breeding season. On this 
occasion, besides several characteristic moorland species, a pair of 
oyster-catchers were seen, and also several pairs of terns, of which 
a number of nests with eggs were found. The species was 
probably the common tern (Sterna fluviatilis), but no close view 
of the birds was obtained. The island is almost entirely a flat, 
boggy moor, covered with heather and sphagnum, but at the west 
