HELOPID.E. — CISTELA. 29 



From the foregoing Helopidae the present genus may be at once 

 known by the integrity of the apex of its mandibles, and from the 

 following genus by the great dissimilarity in the form of the thorax, 

 exclusively of other less evident characters. The genus as here 

 constituted, however, requires revision, as its contents are of too 

 discrepant a nature to warrant their being permanently united under 

 one name : the first species differing not only by having the antennas 

 serrated, especially in the males, with the third joint short, &c. ; and 

 the two last by having those organs very much abbreviated and 

 quite simple. 



Sp. 1. Ceramboides. A^igra, tenuissime holosericeo-pubescens, elytris punctata- 



striatis testaceis, antennis acute serratis. (Long. corp. 5 — 5§ lin.) 

 Ch. Ceramboides. Linne. — Cr. Ceramboides. Steph. Catal. 245. No. 2444. 



Black, with a delicate silken pubescence : head finely punctulated : mouth and 

 palpi dusky-piceous : thorax very finely punctured, rather thickly pubes- 

 cent: elytra testaceous, regularly and somewhat deeply punctate-striate, with 

 the interstices finely coriaceous : legs and antennae black, the latter acutely 

 serrated within, especially in the males. 



Rather scarce, sometimes found in June in hedges and on umbel- 

 liferous flowers in the vicinity of Darenth-wood, and other parts of 

 Kent ; I have also taken it near Hertford. " Sydenham-wood." — 

 Mr. Ingall. " Cambridge." — C. C. Bahington, Esq. 



Sp. 2. castanea. Rufo-ferruginea, nitida, capite fuscescente, elytris punctato- 



striatis, interstitiis subpunctulatis. (Long. corp. 4^ — 5 lin.) 

 Cr. castanea. Marsham. — Ci. castanea. Steph. Catal. 245. No. 2445. 



Rufo-ferruginous, or castaneous, shining ; head somewhat fuscescent, punc- 

 tured ; thorax also punctured : elytra rather deeply punctate-striate, with 

 the interstices slightly punctate ; legs and antennae pale testaceous, the latter 

 very long. 



Much more abundant, and more extensively distributed than the 

 preceding insect, occurring in June throughout the metropolitan 

 district, in Devonshire, Norfolk, &c. 



Sp. 3. fulvipes. Nigra, nitida, ore antennisque fusco-ferrugineis, pedibiis 

 rufo-testaceis, elytris punctato-striatis, interstitiis punctulatis. (Long. corp. 

 4—5 lin.) 



Ci. fulvipes. Fabricius.— Steph. Catal. 246. No. 2446. 



Shining-black, sometimes with an ceneous tinge : mouth, labrum, and anterior 

 margin of the iorehead, obscure ferruginous : thorax thickly punctured : 

 elytra punctate-striate, with the interstices finely punctured : legs entirely 



