COLEOl'TERA. 511 



Zdtccluifl fur cUe Eiifomologic, liavc minutely iuvesUsfated their structure, and have pi-oposed a great number of 

 groups in addition to tliosc ^iven in the text, often, it is true, resting upon very njinute and obscure characters.] 



Our second section, Ulalacodcnni, is divisilile into five tribes. 



Tlie first, Celirionites, so uanied from (lie genus Cebrio, Oliv., to Viihicli some others are added, lias 

 tbe mandililes terminated in a single point ; tbe palpi of equal thickness throughout, or slender at the 

 tip; the hody rounded and swollen in some; oval or oblong, but arched above and bent down in front, 

 in others. It is often soft and flexible, with the thorax transverse, broadest at the base, wilh the 

 lateral angles elongated and acute in some ; the antennse are ordinarily longer than the bead and 

 thorax. The feet are not contractile. Their habits are unknown; many are, however, found upon 

 plants in moist places. They may be united into a single genus, 



CEBiao, Oliv., Fabr. 



In a first subsection, establishinj^ a connexion between this and the preecdiut^ tribe, the species have the body 

 of a consistence as solid as in the Sternoxi, and of an oblong-ovate form ; the mandibles advanced beyond the 

 labrnni, narrow, very much bent ; the antennai flabellate or pectinated in the males of most of the species, or 

 latlier thickened at the tips. This subsection consists (with one exception) of species not inhabiting our country, 

 and comprises several genera, including Physodaciyltis and Cebrio^ in which the prosternum is produced into a 

 point, and received into a notch of the mesosternum ; and Anelastes, Kirby ; CaUh-hipUy Latr. ; Sondalus, Knoch. ; 

 H/iipici'i-a, Latr., and Ptilodactijla, Illiger ; most of which are formed of South American insects, the males of 

 nniny of which are remarkably distinguished by their branched or pectinated anteuuffi. These also differ from the 

 jireceding in the prosternum not being remarkably prolonged into a point, and in the mesosternum wanting the 

 frontal impression. In several of the last-named genera tbe joints of the tarsi are lobed beneath, and in the genus 



D(!~s'^i/liis, hutr. ; Atopa, Fabr., which has the 11-jointed antennai simple in both sexes, the three basal join of 

 the tarsi are without these membranous lobes, but the fourth joint is deeply bilobed, and the terminal joint 

 w ithont an appendage between the claws. Type, Atopa cervlna, Fab. A common British insect. 



In the second division of the Cebrionites the mandibles are small, but little or not at all extended beyond the 

 labrum; the body generally soft, nearly hemispheric or ovoid, and the palpi pointed at the tip. The antenna are 

 simple, or but slightly toothed; in many the hind-feet are used for leaping. They frequent aipiatic places. 

 ['I'hese are minute insects.] 



Elodcs, Latr. ; Ciiphon, Fab., Dej., has the posterior thighs scarcely diffei'ing in size from the others. [Scleral 

 minute ISritish species.] 



.'^ci/rtt'Sy Latr , has the hind thighs very large, and used for leaping. These two have the penultimate joint of 

 the tarsi bilobed ; in the two following it is entire. 



Ni/cteirs, Latr., has the third joint of the antenna; very minute, and the spurs of the hind tibia; distinct. 



Enbria^ Zeigl., has the second joint of the antenns minute, and the spurs of tbe hind tibia: ahiiust obsolete. 

 C//phonpalti$fris, Gcrniar. [A minute species, recently captured in Scotland.] 



The second tribe of the Malacodermi, that of the Lamjjyrides, is distinguished from the preceding 

 by the thickened tips of the palpi, or at least of the maxillaiy palpi ; tbe body always soft, straight, 

 depressed, or scarcely convex ; and the thorax, either semicircular or nearly square, advanced over the 

 head, which it wholly or partly covers. The mandibles are generally small, terminated in a slender 

 curved point, entire at the tip; the penultimate joint of the tarsi is always bilobed, and the ungues of 

 the tarsi are neither toothed nor furnished with any appendage. The females of some species are desti- 

 tute of wings, or have only short elytra. When seized, these insects fold their antenna; and feet close 

 to the hody, without making any movement, as if dead ; many also bend down tbe abdomen. They 



form the genus 



Lampvris, Linn. 



A first division has the antenna; arising close together; the head either free and produced into a mumle, or 

 entirely concealed beneath the thorax, with the eyes of the males very large and globular, and the mouth small. 



Li/ais, Fab., having the muzzle very long ; 



Dieti/optera, Latr., with the muzzle very short ; and 



Omalisus, Geoffr., without any distinct muzzle ; are distinguished for the want of the power of emitting light. 

 [There is one British species, L. mhiulus, Fabr., belonging to the second of these groups ; it is small, of a black 

 colour, with red elytra.] 



The other £n>»;jiW7ifcs of this first division differ from the former, not only in not having a muzzle, and in 

 having the head, which is occupied almost entirely by the eyes in the males, entirely or nearly hidden beneath 

 the semicircular or square thorax ; but also in a very remarkable property which they jpossess, either common to 

 both sexes or peculiar to the females alone— that of being phosphorescent ; wlience these insects have obtained 

 tlie names of Glow-worms and Fire-flies. Tbe body of these insects is very soft, especially the abdomen : the 

 luminous matter occupies the under-side of the two or three terminal segments of this part of the body, which are 

 ilitferently coloured, and generally yellow or white. The light they emit is more or less bright, and of a greenish- 

 white, or white colour, like that of different kinds of phosphorus. It appears that these insects are able at will 



