COLEOPTERA. 553 



Chrysomela savgiiinolenta [a common British species], futir lines long", Llack or blue-black, with the sides of the 

 thorax thickened, and the elytra \vith a broad marf-in of red. It is found on the earth in fields, at the sides of 



Oot-jiaths. 



Chnjs-jmda poiudi, Linn., is blue, with red elytra, having- a small 

 black mark at the tip. It is found in the willow and poplar, on 

 wliich it.^ lai-va lives, often in society. [It is very abundant in 

 )':;ii;-|and], and forms, with some others, the genus Lina of 

 ft]e-erle. 



We tiuish this tribe with those Cbrysoraehna:; which have the 

 maxillary palpi slender at the tips, and terminated in a point. 

 Plucdon, Me^. (and Cufaphtis, Mejj.), have the body ovoid or 

 '^' '"""'"■ orbicular. 



Prosocia-is, Latr. (Uelodcs, Fabr.), has the body narrow, more elon^^ated, and the terminal joints of the antenna; 

 form a straii;ht mass. [f. pfteUaiuiru, a common British species. Several other subgenera have been separated by 

 r cent authors, and of v.'Uieh the British species are described by Mr. Stephens, in his ///((s/ra^/on^ o/ifr///Vi 

 Eiilomoloiji/,] 



The third and last tribe of the Cyclica, Galerucitf^, has the antenna ahvays at least as long as half 

 tlie body, of equal thickness throughout, or gradually thickened to tlie tips, inserted between the eyes 

 at a little distance from the mouth, and generally close together at the base, and near to a small longi- 

 tudinal elevated line; the maxillary palpi, thickened in the middle, are terminated by two joints in 

 form of a cone, but united together at the base, the last being short, and either truncated, obtuse, or 

 pointed ; the body is either ovoid or oval, and sometimes nearly hemisphericah Many, especially 

 amongst the smaller species, have the hind thighs thickened, which gives them the power of leaping. 



This tribe is composed of the genus 



Galeruca,— 

 "Which we divide into two principal tribes— those which do not leap, Isopoda jliaving; equal-sized feet], and those 

 wliicli leap, Anho/ivda, [or having' unequal-sized feet]. 

 I Adoriian, Fabr. {Oides, Weber), is composed of exotic species having the penultimate joint of the maxillary palpi 



I dilated, and the last much shorter, and truncate. 



I Luperus, Geotf., has the last two joints of the maxillary palpi scarcely diflering in size, and the antenna com- 



I posed of cylindrical joints as long as the body. [Small British species.] 



i The others, which have the palpi terminated in the same manner, and the antennae shorter, and composed of 



I'cversed-conical joints, are the 



Galeruca proper [composed of numerous species, including] Chnjsomela Tanaceil, Linn., which is oval-oblong, 

 black, but slightly shining, and with the elytra strongly punctured. It lives on the tansy. 



The Saltatorisl Galerucita^, or those which have the posterior thighs thickened, arranged by Fabricius in his 

 genera Chrysomela, Galeruca, and Crioceris, are reunited into a single genus {Halflca), in the systems of Geollroy, 

 (.)livier, and lUiger. These beetles are very small, but adorned with varied and brilliant colours, and leap with 

 great agility and to a great height when disturbed. They often devastate the leaves of such vegetables as serve 

 them for food, their larVEe devouring the parenchyme, and undergoing their transformations within the leaf. 

 Some species, especially those which have been called in France jjuces des jardins, Garden-Heas [and in England 

 I'urnip-lleas], do much damage in the two states [of larva and imago], to pot-herbs, [and especially to turnips just 

 sprung up.] South America is the country which, above all others, abounds with the greatest number of these 

 insects. Illiger has published^ in his £H^omtJ^O(//crt^ il/(ii»(7^/ji<;, an excellent raonograpli on these insects, which 

 be has distributed into nine families, some of which appear to us to form distinct subgenera. 



Octugonotes, Drapiez, differs from all the rest in having the maxillary palpi with the thii'd joint swollen, and 

 the last very short and truncate ; the labial are terminated in a point, as in the following subgenera, but in these 

 the maxillary palpi are similarly terminated, or subuhited at the tip. The last joint of the hind tarsi of Octogonotes 

 is suddenly swollen and rounded above, with the claws very small. 



(Edionychus, Latr., differs from all the following by possessing the last-mentioned character, and includes the 

 first two families of lUiger. The only European species is A. marginella, Olivier, found in Spain and Portugal. 

 In the following subgenera, the last joint of the hind tarsi is gradually thickened, and terminated by two 

 ordinary-sized claws. 



Psylliodes, Latr., has the first Joint of the hind tarsi very long, inserted above the posterior extremity of the 

 tibia, which is produced into a conical appendage, compressed, toothed at its edges, and terminated by a small 

 tooth, it corresponds with Uliger's ninth family Altitarscs. H. chrysoccphala, &zc.—II. dcntipcs, arklella, &c., 

 having the posterior tibiiK dilated in the middle into a tooth, form another subgenus. 



DiboUa, Latr. (previously AUitarsus, Latr.), has the head for the most part received into the thorax, and the 

 posterior tibiee terminated by a furcate spine. (Uliger's eighth family, A. echVi, Oliv., iS;c.) 



AKica, Latr., has the head exposed, the posterior tibia: truncate at the tips, without any prolongation or fork, 

 and the tarsi terminal and short. Type, Chrysomela oleracca, Linn, [and numerous other British species, arran"-ed 

 by Stephens into several new subgenera, forming Uliger's third, fourth, fifth, and sixth families.] 



Longltarsus, Latr., has all the characters of Haltica proper, but the posterior tarsi are at least as long as the 

 posterior tibiai. (Uliger's seventh family.) 



