Insects. 4867 



3. H. ful v us, Fab., Clairv., Babington, Erichs., Steph. Man. 

 H. ferrugineus, Gyll., Aube. H. ferrugineus, var., Steph. III. 

 Long. 4; larg. 2 J. In abundance occasionally in the Fens: not 

 uncommon. 



(H. guttatus, Dahl., Aube. Long. 3| ; larg. 2. Allied to both of 

 the above species. Differs from H. fulvus, Fab., by its longer form; 

 thorax with a transverse line at posterior margin of very large, almost 

 black, punctures : differs from H. mucronatus, Steph., by smaller and 

 more compressed head and eyes, and by the invariable presence of 

 markings, which are more cloudy than those of H. fulvus, on the 

 elytra. France.) 



4. H. flavicollis, Sturm, Aube. H. impressus, Erich., Steph. Illust. 

 H. ferrugineus, Steph., Bab., not Linn. Long. 4\ ; larg. 2£. Near 

 London; Norfolk, Bottisham, Northampton; near Lincoln. 



5. H. variegatus, Sturm, Erich., Aube. H. subnubilus, Bab. 

 H. margin^punctatus, Steph. III., not Panz. H. ruficollis, Steph. 

 Man., not Degeer, Erich. Long. 3 J ; larg. 2f. Cambridge, 

 Huntingdon, Norfolk ; not common near London. 



6. H. cinereus, Aube, Erich., Schiodte. H. affinis, Steph. Long. 3f; 

 larg. 2. The disposition of the striae on elytra is the same as in 

 H. flavicollis, but the punctures are closer, smaller and more frequent 

 in each stria ; differs also by its smaller size, by the cloudy markings 

 on elytra, and by the irregular punctuation of thorax ; differs from 

 H. ruficollis, Dej., by the absence of striae at the base of thorax, and 

 by the markings on the elytra, which are always less distinct ; it is 

 also broader in form, with more parallel sides; more rounded at the 

 apex than H. ruficollis. 



7. H. ruficollis, Deg., Erich., Steph. Illust. H. impressus, Gyll, 

 Aube. H. marginepunctatus, Panz. H. fulvicollis, Steph. Man. 

 H. melanocephalus, Steph. Illust. H. brevis, Steph. H. rubicundus, 

 Bab. Long. 2f ; larg. If. Abundant. 



8. H. fluviatilis, Aube, Erich., Steph. Long. 3 ; larg. 1|. Dr. 

 Schaum detected two examples in Mr. Wollaston's cabinet : it ap- 

 pears to be closely allied to H. ruficollis, Dej., to be brighter in 

 colour ; the small lines on elytra which compose the transverse bauds 

 are never confluent ; it is larger, longer and less dilated at the shoulders ; 

 it frequents rivers and running water, the former pools and stagnant 

 ditches. 



9. H.obliquus^aft.,^/.,^^/?/*.,^*/^. Long. 3£— 4; larg. If— 2. 

 This well-marked species is local, but not uncommon. 



(H. maritimus, Fairmaire. Long. 3J. Colour and markings as 



