DYTIClDiE. GYRINIDiE. — HETEROCERIDJE, &C. 195 



Page 78. Colymbetes uliginosus. " At Winterbourne Stoke, and in the pits 

 at Weyhill, in October, 1828."— Rev. G. T. Rudd: who observes, " There is 

 something remarkable in the appearing of this species ; for although I dili- 

 gently collected in the same places throughout the year 1827, it never occurred. 

 It frequents shallow grassy ponds, or slowly running streams, and is to be 

 found close at the edges : — it is subject to variation of sculpture, some being 

 impunctate, except the usual striae, and the scattered dots at the apex of the 

 elytra : it varies considerably in size." " Two specimens taken near South- 

 end in April, 1829." — Rev. F. W. Hope. 



Page 79. Colymbetes ferrugineus. This insect seems to be closely allied to, if 

 not the same as, the Dyticus castaneus of Schonherr. 



Page 80. Colymbetes confinis. " Netley." — Rev. F. W. Hope. 



Page 81. Colymbetes vittiger? " In the flooded gravel-pits at Weyhill." — 

 Rev. G. T. Rudd; who kindly furnished me with a series of the insect, which 

 I have not yet had an opportunity of examining : it may probably be only 

 Co. fontinalis. 



Page 81. Colymbetes guttiger. " Common in ponds at Longnor, Salop, 

 1828."— Rev. F. W. Hope. 



Page 85. Hydaticus Hybneri. " Near Cambridge, 1829." — G. Darwin, Esq. 



Page 86. DYTICUS. The Rev. W. Kirby, in the last edition of his interesting 

 Introduction to Entomology, judiciously separates the two first species, as a 

 genus, by the name Leionotus ; of which the characters will be detailed in 

 the appendix to Captain Parry's Travels. 



Page 87. Dyticus (Leionotus) conformis. " Near Cambridge, not rare, 1829.'* 

 C. Darwin, Esq. 



Page 90. Dyticus punctulatus. " Plentiful every where in Hants and Wilts." 

 -~Rev. G. T. Rudd. " Not of very frequent occurrence near Marton." — 

 L. Rudd, Esq. " Cardew-mire."— T. C. Hey sham, Esq. 



In the collection of the Rev. F. W. Hope is a singular hermaphrodite of this 

 species. 



Page 92. Dyticus circumflexus. " Kimpton." — Rev. G. T. Rudd. 



Page 96. Gyrinus minutus. " Near Marton."— L. Rudd, Esq. 



Page 97. Gyrinus substriatus. " Common in Yorkshire."— L. Rudd, Esq. 



Page 97. Gyrinus lineatus. " Marton Lodge." — L. Rudd, Esq. 



Page 98. Gyrinus villosus. " Taken in a small stream near Cummersdale."— 

 T. C. Hey sham, Esq. 



Page 100. Heterocerus marginatus. "Common on the banks of the Eden, 

 below Rockcliff, as well as upon the coast."— T. C. Hey sham, Esq. 



Page 101. Heterocerus laevigatus. " Scarce near Marton." — L. Rudd, Esq. 



Page 103. Parnus prolefericornis. " Pretty common in ditches on Cardew- 

 mire and Tarn Wadling."— T. C. Hey sham, Esq. 



Page 104. Parnus auriculatus. " Kimpton/' — Rev. G. T. Rudd. " Marton," 

 L. Rudd, Esq. 



