503 INSECTA. 



Some have tlie eyes of ordinary size, the riiiieiiii;r linear, with eloiigatfil joints, ami tlie two s]iurs of tlio fore 

 tibia? close tog-ether,— the tibiic having only a lonp-itniJinal ranal. 



Pogonophorus, Latr. {Leistus, Frtehl., Manlicura, Pan/,.), is remarkable for the eloni^ation of tlie onter palpi, 

 and the labial ones, ■which are lonf^er than tbe lieati ; (he mandibles ai-e bulged out intu a fiat ani^Ie at the ba:>c; 

 outside, and the tonguelet is tejminated by three spines. 'V\i)p, Carahus spinibai-bia, Tabr., [a common British 

 species.] 



iVc/^Wf7, Latr., differs from the precedinix in the ]ialpi bnnij- much shorter; the outside of the mandibles is 

 se.trcely dilated, the tonguelet is short. 'J'ype, ( 'ani/uix /■,-■ i:iri>lli.s. [(_lne of the mo^t abundant species.] 



J//*.^//.^, Bun., are aptrfous NebriK, merely mure oblon.ij:, and which freipient hi^li mouutaius. CarvhiiN Udl- 

 v'ijlii, Panz. 



Omnphron, Latr. (Scoli/liis, Fabr.), differs from the three preceding in having the body gibbose above, and nearly 

 orbicular; the thorax very short, transverse, and the seutellum is not visible. Thi.s subgenus is composed of a 

 small number of species found on the margin of waters in Em-ope, North America, Egypt, and the Cape of Good 

 Hope. M. Desmarest has described the larva of the common species, [.S*. Uinlxilnm, Latr., found on tlie burdei- of 

 streams in France.] This lar\ a approaches that of the Dytici in its form. 



The remainder of this division have the body thick, with large prominent eyes ; antennas rather thickened at 

 the tips, with short joints ; one of the spurs of the fore tibia? is inserted above the other; the four or three basal 

 joints of the anterior tarsi of the males are but slightly dilated in the majority. These insects are found on the 

 banks of rivers in Europe and Siberia. 



Blethisa, Bon., has the thoi-ax broader than long, nearly square, being only slightly narrowed near the posterior 

 angles, with tlie four basal joints of the Carabus mnUipunctafus, Fabr., Panz. 



PdophUa, Dej., has the three basaljoints of the fore tai-si of the males strongly dilated. Carahus horcalis,y-AhT., 

 [a species recently detected in Ireland], 



Elaphrus, Fabr., has the thorax at least as long as it is broad, convex and heart-sliaped ; the four basal joints 

 of the fore tarsi of the males slightly dilated. 



Cnrrt6»i" H//j/(«oi:M.!;, Fabr., four lines long, has the elytra ornamented with deep circular impressions running 

 into each other, with an elevated disc. 



Ciciitdela riparia, Linn., is another common British species, smaller than the preceding. 



NotiophUns, Dnm., diflers from the preceding in having the labrum nearly semicircular, (instead of short and 

 transverse,) and the outer palpi are terminated by a subo\'al joint pointed at the tip; the tarsi arealike in both 

 sexes. Cicbnh'la aqiiatica, Linn., [a very common British species found on the banks of streams and in damp 

 situations, running about with very great agility. Mr. "Waterhouse has published a monograph on the genus in 

 tlie Entomological Magazine, where he has described eighteen British species ; but subsequent Coleopterists have 

 gj-eatly reduced the number of the species.] 



Our second general division of tliis tribe, the SiihuUpolpi., is distinguislicd liy the form of tlie outer 

 ]ialpi, of which tlic prniiltiiiiate joint is in the form of a reversed cone, and is united to the following, 

 With ^vhich it forms an oval or spindle-shaped mass, terminated in Ji point. The t\AO anterior tibiee 

 are always notclied. These insects closely reseniljle the last, both in their form and habits. 



Bembid/on, Latr. {Bcmbiiliinn, GyU.), has the penultimate joint of the outer maxillary palpi swollen, and the 

 last very slender and conical. The basal joint of the two anterior male tarsi is dilated in the males. Messrs. 

 Ziegler and Megerle divided this subgenus into several others, but without giving their characters; fovmding 

 them, as it seems, entirely on the change of form of the thorax. These are Tachyjms, Bemhidium, Lopha, Nota- 

 plius, Penjphus, and Leia, [the last of which (being previously used for a genus of Diptera) has been changed by 

 Stephens into P/nloc/i/lm.s.] The type given by Latreille (considered by Dejean as a Tachypus) is the Cicindela 

 /lavipes, Linn., one-fifth of aline long, a very abundant species. [This genus comprises a considerable mmiber of 

 species, all of which aie of very small size, being the most minute of all the Carabiques, and generally of brassy 

 or coppery tints. Another pretty species is the Cicindela quadri-maculaia, Linn. ; of a brassy colour, with four 

 white spots on the elytra.] 



Trechus, Clairv., has the last joint and the outer palpi as long or longer llian the preceiling, and as thick at its 

 base, so that together they form a fasifurm mass. TrerliKS nibcns, Clairv., nnisarvK-s, Zeigl., is allied to Treclius, 

 \\\\\\ palpi fusiform at I hr t ip, bid \wili the prunllimate joint shorter than the following ; the fore tarsi of the males 

 is slightly dilated. lUirpaU-is v<,!U'r<-s, Ci) il., I\l<n>ni.s, Zcigl , is composed of narrowed Trechi with the thorax of a 

 reversed-triangular Innn, an<l mandibles inupurlnniably larger, and extending Itcyond the labrum. 



[In terminating the terrestrial eaniivoroiis Hectics, it is necessary iigain to refer to the many works 

 recently pnblishei], containing either isolated dcscriptiuns or more complete monographs of these 

 insects. Dejean, King, Hope, Kirbv, Gory, Laporte, Brulle, Erichson, jMannerhcini, and many ollicr 

 recent Entoniologists liave devoted tlieir artcniion to this trilie, many seeming to prefer them from 

 the circumstanee of their sranding at the head of tlie order. Some of them have cut up the several 

 groups given by Latreille into a great numlier of smaller groups, for which tliey have retained the 

 family names terminating in iir/<E. It is of course impossible to give any synopsis, or even notice, of 

 the many generic or subgeneric groups whicli have bcon jnoposed, ebiedy founded u|)on exotic insects, 

 of which nothing is known except their exislcnee as cabinet specimens,] 



