COIiEOPTERA. 63 



Here the thorax is thick, narrower than the ahdomen, and almost 

 orbicular or nearly cordiform. The antennae thicker at the extre- 

 mity and the thighs clavate. 



Lystronichus, Lat. * 



There the thorax is depressed, trapezoidal, and its posterior margin 

 is as wide as the abdomen, or hardly narrower. The antennae are 

 filiform or slightly enlarged towards the extremity. In 



CisTELA, Fab., 

 Or Cistela properly so called, the head pi'ojects in the manner of a 

 snout, and the labrum is hardly wider than it is long ; most of the 

 joints of the antennae either obconinal, triangular, or even serrated; 

 the last is always oblong. The body is ovoid or bordering on an 

 oval. 



C. ceramboides ; Chrysoniela ceramboides, L ; Oliv., Col. 

 Ill, 54, 1 , 4. This species, on accouut of its antennae, of which 

 the three first joints are shorter than the following ones, and of the 

 serrated form of the latter, might constitute a separate subgenus: 

 It is five lines in length ; black ; elytra reddish and striated ; 

 thorax almost semicircular. The larva inhabits the tan of old 

 Oaks, where it undergoes its metamorphosis. 



C. sidphurea; Chnjsomela sidpliurea,Jj. ; Oliv., lb., I. 6. A 

 more elongated form than that of the ceramboides ; length four 

 lines ; lemon-yellow ; eyes black ; elytra striate ; antennae sim- 

 ple. Very common on diiferent flowers, those of the Yarrow 

 particularly f . 

 Mycetochares, La?. — Mycetophila, GylL, Dej. — Cistela, Fab. 

 Where the head does not project in the manner of a snout; where 

 the labrum is very short, transversal and linear, and where most of 

 the joints of the antennse are short and nearly turbiniform ; the last 

 is ovoid. The body, particluarly in the males, is narrow and elon- 

 gated. The maxillae and the labium are soft J 



In the others, the penultimate joint of the tarsi is bilobate, and the 

 last of the maxillary palpi strongly dilated and securiform. The body 

 is generally more oblong. They form the 

 Allecula, Fab. § 

 The third tribe, that of the Serropalpides 1|, is remarkable, as inti- 



* Helops equestris. Fab., and some others from Brazil ; — Helops colunibiams, 

 Germ. ; — Notoxus helvolus, Dalm. 



t See Lat., Gener. Crust, et Insect., IT, p. 225 ; Oliv., Col., lb.; Schoeoh., 

 Synon. Insect. I, ii, p. 332, et seq. 



I SeeGyllenh., Insect. Suec, I, ii, p. 451 ; Lat, Gener. Crust, et Insect., II, 

 p. 189, Helops barhatus. The name of Mycetophila having been employed by M. 

 Meigen, I have thought it necessary to give a substitute in Mycetochares, 



§ The Alleculae contractu, cjeniculata of Germar — Insect. Spec. Nov., p. 163, 164 

 — have their anterior tarsi strongly dilated. 



II The Securipalpes of my Fam. Nat. du RSgne Animal. The term Sirropalpides 

 is preferable, inasmuch as it reminds us of the genus Serropalpus, which forms part 

 of this tribe. 



