THE AQUATIC COLEOPTERA OF THE SOLWAY DISTRICT 79 



D. latus, Steph., anywhere up to the present, as I have 

 seldom worked the rapid streams which it inhabits. It is 

 apparently rare, and Lennon does not mention it in his lists, 

 nor has he any Scottish specimens in his collection. Sharp's 

 record for Laccopkilus interruptus, Panz., appears to be the 

 only published one, but I believe I can show in a round- 

 about way that Lennon took one specimen of this species in 

 the district. The only specimen of Hydrovatus clypealis in 

 the Lennon Collection came, according to the Register, from 

 Cambridge, although that species is only known to occur in 

 the Isle of Wight and South Hants, while a single specimen 

 of L. interruptus is registered as having come from Portsea, 

 one of the localities where H. clypealis occurs (see ' W. W. 

 Fowler,' and ' J. J. Walker,' "Viet. County History, 

 Hampshire and Isle of Wight "). Now Lennon evidently 

 mixed up L. interruptus and obscurus, for he says of the 

 former species, " not uncommon in Auchencrieff Loch " (MS. 

 List), and fills up the space in his cabinet with L. obscurus. 

 Of this latter species he says " very rare. One specimen 

 only in river Nith above Dumfries " (MS. List). He had 

 also in his collection one specimen of Laccophilus rariegatus, 

 Germ., labelled Dumfries, although the species only occurs 

 in the S.E. of England, and one specimen of Bidessus 

 gemimis, F., labelled " Dover." Now, if we change these 

 labels about, so as to make them refer to their proper 

 species, I think we shall find that Bidessus geniinus, F., 

 came from Cambridge ; Laccophilus variegatns, Germ., from 

 Dover ; Hydrovatus clypealis, Sharp, from Portsea ; Lacco- 

 pJdlus obscurus, Panz., from Auchencrieff Loch ; L. inter- 

 ruptus, Panz., from river Nith above Dumfries. The river is 

 just the place where, in a quiet backwater, one would expect 

 to find L, interruptus ! 



Since Sharp's record of Gyrinus suffriani, Scriba, 

 Lennon has taken it at Maxvvelltown Loch, where possibly 

 it is still to be found, but I have paid very little attention 

 to the Gyrinidcs. Berosus luridus, L., is another of Little's 

 Dumfries records, and there is apparently no other Scottish 

 one, except that of Robert Hislop for Elgin, 1870, which is 

 referred to by Sharp. The species is an " English " type, 

 not otherwise having been recorded farther north than 



