51l 



LXSECTA. 



Rhina, L.'itr,, is winded, and the antcnnir are inscned near the middle of the rostrum ; the fore-feet in the maU-a 

 are very lonif. 



Calandra proper, has the antenna' much elbowed, l>ut inserted at the base of the roKtrum. 



Calandra granaria, tiie Corn Weevil, commits g^reat havoc in granaries, its larva feedin;^ on the grain ; that of 

 C palmarum feeds on the palm. Its larva is esteemed a delicacy by the natives of South America. 



Co.s.sontis, has short anteniue, inserted near the middle of the rostrum. 



Dnjopihorus, Sch., has only 6-joirited antenna:, and 5- jointed tarsi ; none of the joints heing bilobed. 



'^W^liV'V 



THE SECOND FAMILY OF TIIE COLEOPTERA TETRAMERA,— 

 The Xylophagi, — 

 Have not the bead prodaccd into a muzzle; the antennae are tbickened towards the tips, or pcrfoliated 

 from the base; always short, with fewer than eleven joints in the majority; the tarsi (which 

 appear to be 5-jointed* in some), generally entire, or having the penultimate joint dilated and heart- 

 shaped ; in tiie latter case the antenna; are always terminated by a club, either solid and ovoid, or 

 divided into three plates, and the palpi are short and conical. These insects generally live in wood, 

 which their larvtB pierce, forming 1)uito\\s in every direction ; and when abundant in forests, especially 

 those of firs and pines, they destroy the trees in a few years, rendering them unfit to be used in 

 the arts. Some are also very destructive to the olive ; others feed on fungi. 

 We divide this family into three sections. 



1. Those wdiich have the antennce composed of ten joints at least, either terminated in a thick mass, 

 generally solid, or having three elongated plates ; or forming a cylindric and perfoliated mass from the 

 base, and the palpi are conical ; the anterior tibiae; in the majority are toothed, and armed with a strong 

 huok ; and the tarsi have the penultimate joint generally bilobed. Some have the palpi very short, and 

 the antcnnai terminated in a solid or trilamellar mass, preceded by live joints at the least. These 

 Xylophagi compose the genus — 



ScoLVTL's, Geoffr. 

 In some the penultimate joint of the tarsi is bilobed, and the 

 antenuEE have seven or eight joints preceding the club. 

 Ily/urgux, Latr., has the club of the antennse solid, globular, 

 and antiulated. [//. p/niperda, and numerous other species 

 of minute tuze, :;,ome of \vhirh are very destructive to pine 

 forests.] 



Jli/lesiinis, Fabr., has the club of the antenna; solid and 

 annulated ; but pointed at the tip. 



iScolijlus proper {Eccoptogasier, Herbst.) has the antenna 

 straif^ht, naked; the club solid, very compressed, its annuli 

 forming concentric constrictions. [-S'. destructor, and several 

 other species, the former of which is exceedingly injurious, destroying the elms in great quantity round London.] 

 Cayjiptocerus, Dej., has the male antenna furnished below the club with long tilaments. 

 Phloiotribus, hKtv.y ditTers from all the rest in the club of the antennje being formed of three long filaments. 

 In the others the tarsal joints (apparently five in number) are entire, and the club of the antennie commences at 

 the sixth or seventh joint. 



Tomicus, Latr., has no notches at the sides of the thorax, and the tjbiffi are not striated. [Numerous minute, 

 cylindric species,] 



/^/■(7/V/v;'.v, Herbst., has the sides of the thorax notched to receive the femora, and the tibiip are transversely 

 striated. 



[The insects of this genus, or rather family, have been recently described by Dr. Erichson in Weigmanns Archiv., 

 and figured in Dr. Ratzeburg's Forst Insecten. Several new genera are established in these works.] 



The others have tlie pal[)i large, very visible, and of unequal length. The body is depressed and 

 narrowed in front ; the antennas either 2-iointed, the second joint being very large and irregnlar-shaped, 

 or lO-jihnted, and entirely perfobated ; the tarsi are entire. These are exotic insects [of the most 

 singular appearance and greatest rarity], wdiich compose the genus 



Paussus, Linn., — 

 [(^f wdiich I have published a monograph in the Trans. Linn., and Entomol. Societij, proposing several 

 nev\' genera]. 



are extremely clo^e in tlieir rcl^iiinris tn Uic Curculionida;, oUicrs 



to be allied to Cryptopliaifua, I 

 eopteni [TIil- fact is, Umt 

 I lliij luvid of tlie Xyloplu.yi, I 



llian Oiat uf btiuf,' 



