IlaJijilii'^.] ADEniAGA. 153 



very finely puncturod witli rows of larger but yet fino punctures set in 

 black lines which, especially externally, are in places confluent and form 

 spots : these, however, are not nearly as much pronounced as in the 

 preceding species. L. 3j mm. 



Local, but widely distributed; usually found in ponds and ditches ; not uncommon 

 in tbe Loudon district : Graveseud, Earlswood, W'andswortb, Lee, EsIut, Forest 

 }[ill ; Horniuf,' Fen; New Forest; Norfolk; Suffolk; Knowlo, near Birniinybam ; 

 Hereford; Weston-super-Mare; Liverpool district; Nortbuniberland district (Gos- 

 forth, Talkin Tarn, &c., not uncommon) ; Scotland, scarce, Lowlauds, Tweed, Forth, 

 Tay ; Ireland, Armagh. 



The insect captured by Mr. Bold in ponds near Newcastle-ou-Tyne, 

 and introduced by him as H. varius, Nicolai, is a variety of this insect 

 (as stated by Mr. Eye, Ent. Ann. 1869, 14): I have not seen these 

 specimens, and Mr. IJold's description (Ent. Mo. Mag. iv. 284) is very 

 meagre ; I believe, however, that the insects in Dr. Power's and Dr. 

 Sharp's collections under var. variue are identical with them : these are 

 pale testaceous with the thorax entirely testaceous ; the black elytra! 

 lines are finer and are not confluent ; they are also more or less evanes- 

 cent towards base and externally, so that the elytra as a whole present 

 the appearance of being furnished Avith light markings instead of the 

 usual dark ones ; the specimens which I have examined are also narrower 

 than the ordinary form. According to Schaum, the true varuis of 

 Nicolai is very like ohliqtms, but always smaller, broader at the shoulders, 

 and more rotundate, with the black lines on the elytra running here and 

 there into spots ; the anterior and posterior margins of the thorax are 

 also dark, and the longitudinal stria? at base of thorax are sometimes 

 scarcely perceptible : as there is still some doubt about the insect we 

 consider as a variety of ccmfinis, which seems distinct from the true //. 

 varius, it is better perhaps to adopt a different name for it than v. rariirs, 

 which may cpiise confusion ; I would therefore propose to call it v. 

 jiallens. The specimens in Dr. Power's collection are Scotch, two of them 

 being from Loch Leveii. 



K. mucronatus, Steph. {hadhis, Aube, parallehis, Babington). 

 Elongate, somewhat convex, more parallel-sided than the allied species ; 

 colour reddish testaceous ; head short and broad, eyes large and pro- 

 minent ; thorax usually a little darker on anterior margins, where it is 

 slightly produced in the centre, not strongly contracted in front, strongly 

 punctured except on disc, but more strongly in front than behind ; 

 elytra with rows of strong punctures, interstices with rows of flue 

 punctures, sides subparallel until liehind middle, strongly acuminate 

 at apex. L. 4-4 j mm. 



Rare ; in ponds. Sec, both fresh and brackish ; not recoided from the I^ondon distric-t. 

 Weston-super-Mare (locally jdentiful in early summer, but soon disap])ears) ; Swansea, 

 Crymlyn Hop:; Burton-on-Trent (very rare); Wieken Fen; Soliam, Cambridge; 

 Holm Bush, Brighton; Suffolk ; Hornsea. 



K. fliavicollis, Sturm (mj^rctmiii^, ¥.). This species and the sue- 



