THE AQUATIC COLEOPTERA OF THE SOLWAY DISTRICT 83 



a rule it requires a high-power lens to make out the punctures. 

 On the strength of the 3 specimens labelled " Mid-Solway" 

 occurring in the Lennon Collection I shall include the 

 biguttatiis in the Solway List. 



A note of the occurrence- -of Bcrosiis spinosus, Stev., in 

 the Caerlaverock Salt Marshes (" Ann. Scott. Nat. Hist.," 

 April 1892) is certainly startling in view of the fact that the 

 recorded distribution of this species in Great Britain is 

 entirely eastern, the records being for Yorks N.E., Norfolk 

 W., Suffolk E., Essex S. and N., Kent E., Sussex E., and 

 Hants, S. Unfortunately, however, there are no specimens 

 of this species in the collection, but there is a full series of 

 B. signaticollis, Charp., on Lennon's original cards marked 

 along the base with a blue line to show their Scottish origin. 

 This species is not altogether eastern in its British range 

 since there are records for Cornwall (E. or W. ?) and 

 Glamorgan. Otherwise its records are for Sussex E., Kent 

 E. and W., Surrey, Middlesex, Suffolk E., Norfolk E., Cambs, 

 and Yorks Mid W. In view of the fact that two or three 

 other southern British species occur in the Solway district, 

 this record is interesting. 



There is no doubt as to the correctness of the records 

 for the rare species Helophorus tubercidatiLS^ Gyll. Two 

 specimens occur in the Collection, and were recorded in 

 "EMM."xvi. 134, 1879-80, and in " Ann. Scott. Nat. Hist," 

 April 1892. 



The /ecord of HydrcEua nigrita^ Germ, is interesting. 

 Lennon (MS. List) refers to the species as " local and some- 

 what scarce. Muddy banks of the Glen burn," but only one 

 specimen with the " Scottish " mark is in his Collection. 

 There are, however, more recent records for Ayr (Anderson 

 Fergusson, ' Coleoptera ' in " Handbook of Nat. Hist, of 

 Glasgow and the West of Scotland," p. 279, 1901), and 

 for Mull (Ebudes Mid.), (MS. List of T. H. Beare), which 

 are the only western Scottish records. 



From what I have seen in some collections I am not 

 sure that all the records for this species really refer to it, 

 or whether some of them are not for dark specimens of 

 H. 7'iparia^ Kug. In my experience H. nigrita is rare ; in 

 fact the only place I have so far taken it is at Ballycarry, 



