NEW BRITISH SPECIES, ETC., IN 1869. Ill 



and sub-apical sutural spots ; and may be readily known 

 from all our other Cio7ii by its clothing of uniform greenish- 

 grey hairs. 



166. ToMicus (Dryoc^tes) autographus, Ratzeburg, 



Forstins., i, 160, 7; E. C. Rye, 1. c, 6. 



Several examples of this fine insect were taken by Mr. Law- 

 son, of Scarborough, in the beginning of April, 1869, in some 

 young larch trees in a fir plantation about a mile and a half 

 from that town, — and, from the appearance of those trees, it 

 must have been very abundant last year. 



It is allied to T. viUosus, but is larger, and especially 

 broader than that common- insect, with shorter and less stout 

 hairs, a broader and shorter thorax, less abruptly retuse apex 

 to the elytra and less defined sutural stria. 



167. DoNACiA GENicuLATA, Thoms., Sk. Coll., viii, 123; 



E. C. Rye, 1. c, v, 218. 



This insect appears to be the aquatica of Wat. Cat. 

 {^Comarij Ahrens, Sufir.), which is repudiated by Thomson, 

 who considers Mr. Wateihouse's identification of the Lin- 

 naean types of aquatica to be of no moment, on the ground 

 that, in his opinion, Linnaeus had dentipes in view when 

 describing that species. Thomson, supposing him right in 

 this, gives no reason for rejecting the name ComaH ; and, 

 because he is in doubt as to the sericea of Linnaeus (^ProteuSy 

 Steph.), and thinks Gyllenhal's description of that species 

 applicable to both our aquatica and sericea, gives a new 

 name, IcBvicollis, to the latter species. 



Another new idea is that one is simply a variety of the 

 other (Marmottan, Ann. Soc. Ent. Fr., vii, 679; Stein, Cat. 

 Col. Eur.). 



