192 MANDIBULATA. — COLEOPTERA. 



Page 51. Hydroporus areolatus. " Cambridge." — C. Darwin, Esq. 



Page 51. Hydroporus depressu's. " In the utmost profusion in the large 

 water meadow between Winterborne Stoke, and Berwick St. James, Wilts, 

 Oct. 1828: — plentiful between Monxton and Abbot's Ann, Hants." — Rev. 

 G. T, Rudd. " Common near Marton Lodge, Yorkshire." — L. Rudd, Esq, 



Page 51. Hydroporus 12-punctatus. "Very rare near Kimpton." — Rev. G. T. 

 Rudd. "Not common, Marton Lodge." — L. Rudd. "Newcastle."— G. Wailes, 

 Esq. 



Page 51. t Sp. 6.* Hydroporus 9-lineatus. Supra pallide testaceus capite 

 saturatiore subtus niger, macula thoracis rhombed, elytrorum basi suturd lineis~ 

 que quatuor nigris. (Long. corp. 2 lin.) 



Hyd. 9-lineatus. Rudd MSS. Much smaller than Hy. nigrolineatus, which 

 it somewhat resembles: the upper surface is pale testaceous, the head rather 

 fulvous : on the disc of the thorax is a black rhomboid spot: elytra pale, with 

 the suture and four distinct lines black, united at the base by a transverse 

 streak of the same, and continued to the apex of the elytra, where the black 

 suture and the second streak are united by a transverse narrow black line ; 

 the external line is remote from the margin, and is dilated towards its apex; 

 body beneath black ; legs pale testaceous. 



<c Two specimens only, one of which escaped by accident, found in the flooded 

 gravel-pits, Weyhill, end of October, 1828."— Rev. G. T. Rudd. 



Page 52. Hydroporus lineatus. " Southend, 1829, in great profusion." — Rev. 



F. W. Hope. 

 Page 53. Hydroporus picipes. " Scarce, in the gravel-pits at Weyhill." — 



Rev. G. T. Rudd. " Southend, 1829, in very great abundance." — Rev. F. W» 



Hope. 



Page 53. Sp. 10.* Hydroporus latus. Ovatus, brevis, niger, vage punctatus, 

 capite postics elytrorum basi antennis pedibusque piceo-ferrugineis. (Long, 

 corp. 2^ lin.) 



Short, ovate, very broad: obscure black: head punctured, with the vertex 

 transversely ferruginous : thorax with its lateral margins slightly ferruginous: 

 the disc irregularly covered with impressed dots, with an obsolete transverse 

 elevation: elytra with the base transversely pitchy-ferruginous: the disc 

 irregularly and thickly punctured throughout, the lateral margins piceous : 

 legs and antennae rusty-piceous : body obscure black beneath. 



" Marton Lodge, Yorkshire."— L. Rudd, Esq.— Communicated to me by my 

 friend the Rev. G. T. Rudd :— whether the insect be the same as the Hydro- 

 porus latus of Curtis I am not positive, having seen but the one specimen 

 here described, which was taken last autumn. When my Nomenclature was 

 printing, I conceived that it was synonymous with Hy. opatrinus, but upon 

 comparison the difference was very obvious. 



Page 53. t Sp. 10.** Hydroporus opatrinus. Oblongo-ovatus ater, subpu- 

 bescens, obscure punctatus, antennis pedibusque piceis. (Long. corp. 2f lin.) 



