I HAVE restored my friend Mr. Kirby's name, for independ- 

 ently of its having been long given to this group, Schonherr's 

 is preoccupied by a genus of the Dyticidae. The very thick 

 proboscis and short basal joint of the antennae are characters 

 to distinguish Pachyrhinus, which contains the following spe- 

 cies, all of which, excepting No. 3, have been taken in the 

 vicinity of London : some are attached to sandy wastes, and 

 others are found on marsh or subaquatic plants. 



1. P. leucogaster Mars. ]). 253. 45. — asperatus Gjjll. v. 4. 583. 



Piceous-black, above cinereous, white with scales be- 

 neath, legs testaceous, variegated with fuscous, thorax 

 bituberculated, elevated and ferruginous before, elytra 

 scarcely tuberculated. Gi/U. 

 May, hedges, Somersetshire, &c. 



2. rufescens Step. III. v. 4. 7?. 50. 



Dull pitchy-red, cinereous beneath, thorax with a white 

 dorsal channel, elytra broad immaculate, base of the su- 

 ture white, antennae and legs reddish-piceous : length 1^ 

 to ]i lines. Step. 

 Taken in Somersetshire, &c. 



3. Comari Herb. — Curt. Brit.Ent.pl. 558. 



Mr. Kirby took a specimen on the plant figured by the 

 Moore's river, Hants, July 6th, 1821, and I believe Mr. Dale 

 has captured it at Hurne and in the New Forest; Mr. Skrim- 

 shire has also observed it at Barnham in Norfolk. 



4. quadridentatus Step. III. 4. 51. 



Black, above cinereous, white with scales beneath, thorax 

 obscurely channelled, with 4 acute tubercles, tibiae rufous: 

 length li line. Step. 

 Taken in the New Forest. 



5. quadrinodosus Gyll.3. 155.76. — mucronulatus Gfr?w. 239. 



369. 



Black, base of suture and abdomen white with scales, legs 

 rufous, thorax deeply punctate, the elytra tuberculated. 

 Gyll. 

 From the vicinity of Bristol. 



6. Myriophylli Gyll. 3. 152. 73.— Hydrolapathi Step. 



Somewhat depressed, opake black, beneath densely scaly, 

 white, above smoky, scaly, sprinkled with white, legs tes- 

 taceous, thorax uneven, tuberculated. Gjjll. 

 Inhabits Myriophyllum spicatum. Taken on the Water- 

 Dock at Newcastle by Mr. Wailes. 



The Plant is Comarum palustre (Marsh Cinquefoil.) 



LiiV 



