398 AIM'ENDIX. 



Elongate, narrow ; deep black and glossy ; thorax with its sides dilated and 

 slightly punctured; elytra faintly punctate-striate; antennae and legs 

 pitchy. 



Taken near London. 



Page 117. Genus xcviii. HYDRJENA, Kugellan. 



Of this genus there is a monograph by Mr. Waterhouse, in the Entomological 

 Magazine, v. i. p. 292, &c. in which it is divided into two genera, the first 

 of which does not appear to offer sufficient characters of distinction; but in 

 order to enable the reader to judge for himself, 1 shall mention the leading 

 ones : he names his new genus 



Amphibolus, Waterhoiise. 



*' Maxillary palpi shorter than the thorax; basal joint long, bent, the two 

 terminal joints short ; antennae with the two basal joints very long and 

 slender, the rest forming an elongate club ; legs moderate ; tarsi four- 

 jointed; Aeac^ large ; ^t/m prominent ; thorax with the sides dilated ; elytra 

 convex, elongate, ovate, scarcely as wide as the thorax at the base." — 

 Waterhouse, E. M. v. i. p. 292. 



Page 117. Sp. 1. tAMP. atricapillus. Ent. Mag. {Waterhouse) v. i. p. 292. — 

 Steph. Nomen. 2d edit. col. 20. — Piceo-testaceus, submetallicus ; capite nigra 

 postice punctata ; thorace dense punctata, foveis 4 impressis j elytris punctato- 

 striatis, antennis palpis pedibusque pallide fulvis . (Long. corp. | lin.) 



Pitchy-testaceous, with a metallic tinge; head black, punctate behind; thorax 

 densely punctured, with four larger impressions ; elytra punctate-striate ; 

 antennae, palpi, and legs pale fulvous. 



Taken at Hebden Bridge by Mr. Gibson : — in Mr. Davis's cabinet. 

 Hydrjena proper 



Differs in having the maxillary palpi longer than the head and thorax united ; 

 the thorax more quadrate ; the colour not of a metallic hue ; legs longer ; 

 elytra less dilated, &c. 



Page 117. Sp. 2. Hyd. elongata. Curtis, fol. 307. — Steph. Nomen. 2c? edit. 



col. 20. — Nigra nitida, angustata, antennis palpisque rufo-piceis, pedibiis 



nigris, geniculis tarsisque rufis, elytris angustatis, punctata-striatis, sutura 



paullo elevatd. (Long. corp. li lin.) 

 Narrow, shining-black ; antennae and palpi pitchy-red; legs black, with the 



joints and tarsi red ; elytra very narrow, punctate-striate, the suture slightly 



elevated. 

 Found near London. 



Page 117. Sp. 3. Hyd. gracilis. Mnller.—Ent. Mag. v. i. p. 296.— Steph. 

 Nomen. 2d edit. col. 20. — Nigra nitida, antennis pedibusque rujis, elytris 

 ehngatis profunde punctato-striatisj capite oblongo. (Long. corp. \\ lin.) 



Elongate; shining black; antennae and legs red; elytra narrow, deeply 

 punctate-striate; head oblong. 



Also found near London. 



