224 Field Notes. 
forms are known. The observations, however, are interesting 
since they confirm Spath’s conclusion regarding the connections 
between JT. numismale and T.loscombi ; for although the speci- 
mens whose development has been traced may not prove to 
be T. numismale, they unmistakably carry back the lineage of 
T. loscombi to a form but little removed from it. 
I wish to thank Prof. Swinnerton of University College, 
Nottingham, for the help he has so readily given me at all 
stages of my work, and for allowing me to make use of the 
specimens in the college teaching collection. I must also 
acknowledge my indebtedness to Mr. W. Stafford for the 
abundant material he has given, without which this work 
could not have been carried out so completely. 

aor 
COLEOPTERA. 
The Distribution of Agabus arcticus Pk.—In the 
Naturalist for June, p. 206, in recording Agabus arcticus as 
new to Yorkshire, Dr. Fordham states that the species has 
hitherto only been recorded from Scotland, Northumberland, 
and Ireland. This is hardly correct. It is a well-known 
Cumberland insect and has several times been recorded from 
the county in the Ent. Mon. Mag. and the Ent. Record, and 
also in the list of Cumberland beetles published in the Carlisle 
Nat. Hist. Society’s Tvansactions. It is largely an Alpine 
insect, most abundant at an elevation of 2,000 ft. or more, 
and is invariably associated with A. congener and Hydroporus. 
morio.—F. H. Day. 

—! 0:— 
MOSSES. 
Trichostomum nitidum Schp. in West Yorks.—This 
moss has not been recorded for V.C. 64 up to the present ; it 
is known in North Yorks. and found in fair quantity on the 
limestones around Grange-over-Sands. I have kept a careful 
look out for it for some years and at last found it near Austwick ; 
curiously enough, not on the pure limestone, but on the impure: 
basement conglomerate at the head of Norber Sike. This 
rock:has a very considerable amount of included siliceous 
débris, and near to the 7vichostomum on similar rock is a fine 
growth of Pterogonium gracile, a species which is cited in Lee’s 
Flora as altogether confined to the slate type of rock; this 
latter moss was first noted here by Mr. F. Haxby. It is very 
interesting to get two mosses—one so typical of limestone and 
the other of slate rock—growing together on a conglomerate 
comprised of the two materials. Mr. W. E. Nicholson has 
kindly verified the determination of the species.—C. A. 
CHEETHAM. 

Naturalist 
