Notes on Some Yorkshire Coleoptera. 403 
It is somewhat unfortunate that doubt exists as to which of 
our species of Noterus de Geer gave the name of clavicornis. 
English authors have assumed it to be the cvassicornis Miill., 
and capricornis Herbst. ; while on the other hand continental 
authorities have followed Bedel as /estis that it was the sparsus 
Marsh, semitpunctatus F., and crassicornis Sturm. Here are 
fine ingredients for a nomenclature mix. In the list of British 
Coleoptera just compiled by Messrs. E. A. Newbery and W. E. 
Sharp the present continental nomenclature is adopted, and 
the two species of Noferus are given as crassicornis Miill., 
clavicornis de G., (sparsus Marsh). 
This is doubtless quite correct and strictly in accordance 
with the laws of priority, but it means that we shall be puzzled 
to know which of our species is referred to by anyone recording 
N. clavicornis de Geer, without a synonym. 
Helophorus mulsantt Rye.—In the same brackish pools at 
Saltend Common in which N. sparsus was found, Helophorus 
mulsanit Rye also occurs. I obtained my first specimens there 
in June, 1908, when it was fairly abundant, and I have since 
seen odd specimens on several occasions. Mr. E. Bilton and 
I obtained a few examples there on June 7th last. A critical 
description of the species is given in the October number of 
the Entomologist’'s Monthly Magazine (p. 274). Dr. W. Wallace 
of Grimsby has taken this beetle in brackish pools on the 
south Humber shore at New Holland, in Lincolnshire. It also 
occurs in the south, at Brighton, Deal, Sheppey, etc., and in 
the brackish water pools of the Nith at Dumfries. It will 
probably occur wherever suitable conditions prevail. 
Bryaxis helfert Schmidt.—Mr. E. Bilton and I took several 
examples of this Pselaphid by searching at the roots of Atriplex 
portulacotdes on the Humber shore between Welwick and Skeff- 
ling on July 25th. This is one of several salt marsh species 
whose northernmost limit in England appears to be the Hum- 
ber estuary. Fowler says that it seems to be confined to the 
south-eastern and southern coasts, but since he wrote an 
example has been taken at East Halton Skitter in Lincolnshire. 
Claviger testaceus Preyss (foveolatus Miill.), is perhaps the 
most important addition made to the Yorkshire beetle fauna 
during the past few years. I obtained two specimens from a 
nest of the yellow ant, Donisthorpea flava, at Robin Hood’s Bay, 
in September, 1911. A more complete account of this insect 
and its distribution is included in a paper dealing generally 
with the guests of ants’ nests, which appears in the preceding 
pages (385-397). The species will doubtless be found in other 
parts of Yorkshire. 
Corylophus cassidioides Marsh.—This little Corylophid oc- 
curred among dead reeds at Hornsea Mere on May 30th. Only 
a few specimens were captured, together with a number of tiny 
1915 Dec. 1. 
