Insects. 1895 



the Zoological Society, has been erroneously given as a British insect ; it is a native 

 of the Cape of Good Hope (v. Steph. Man.) 



I have not ventured to introduce A. serricomis, Payk., into the above list of the 

 genus Agabus, as I have not seen any specimen of it undoubtedly British. 



Genus Ilybius, Erichs. 



1. I. ater, Degeer, Fabr., Gyll., Steph., &c. 

 Ag. quadrinotatus ? Steph. 



Mr. Stephens has described his Ag. quadrinotatus from some unnamed specimens 

 in the British Museum. The only specimens still existing in that collection, to which 

 he can have alluded, belong decidedly to I. ater ; one of them is somewhat immature, 

 and therefore not so black as the common specimens of ater ; the two red spots on 

 the crown described by Mr. Stephens are very conspicuous. It appears that Mr. Ste- 

 phens has attributed to them too small a size (4£ lines) ; they measure 6 lines. 



2. J. obscurus. 



Col. obscurus, Marsh., Steph. 



II. quadriguttatus. Lacord., Erichs., Aube. 



3. J. fenestrates, Fabr., Gyll., Steph., Aube. 

 Ag. subaeneus, Steph. 



Dyt. lacustris, Fabr. 

 I am very much in doubt if the I. subaeneus, Erichs., is a species really distinct 

 from fenestratus. 



4. /. guttiger, Gyll., Steph., Erichs., Aube. 



5. /. angustior, Gyll., Steph., Erichs., Aube. 



6. /. uliginosus, Linn. (Mus. Linn.) 



— fuliginosus, Fabr., Gyll., Steph., Aube. 

 Dyt. lacustris, Panz. 



According to both the collection and description of Linne, this is the true Dyt. uli- 

 ginosus of that author. 



Genus Colymbetes, Clairville. 



1. C.fuscus, Linn. (Mus. Linn.), Fabr., Gyll., Sturm., Erichs., Steph. 



— striatus, Aube, Steph. Man. 



— Paykulli, Steph. Man. 



Neither the true C. striatus, Linn., Erichs. (Bogemanni, Gyll., Aube), nor the C. 

 Paykulli, Erichs. (striatus, Payk., Gyll.), have hitherto been found in Great Britain. 

 All the specimens in Mr. Stephens's collection belong to the above species. 



2. C. pulverosus, Steph., Sturm, Erichs. 



— conspersus, Gyll., Aube. 



3. C. notatus, Fabr., Gyll., Steph., Aube, &c. 



4. C. exoletus, Forst., Steph. 



— collaris, Payk., Gyll., Erichs., Aube. 



5. C. bistriatus, Bergstr., Erichs., Aube, Steph. Man. 



— agilis, Payk., Gyll., Steph. 111., Aube. 



6. C. adspersus, Fabr., Gyll., Steph., Aube, &c. 



7. C. Grapii, Gyll., Steph., Erichs., Aube. 



— niger, Lacord. 



