55G INSECTA. 



mailc us acqua.iiitcd wiLh a great nuiuber of species, and sonic new genera, of this minute and curious 

 tribe.] 



Those wliicli liave eleven joints to the antenn.'c form the genus 



PsKLAPiius, Ilerbst. 



Some, few in number, have two uniques to flie tarsi. 



Chcnnium, Latr., has the ten basa! joints of the antenn;e equal-sizeil, an"-! tlie palpi not oxserted. C. biluhercn- 

 laium, [a continentiil species]. 



Dio/iix, Dej., has the third and four followinj? joints of the antennffi very minute ; the eijxhth and three following- 

 thicker than the preceding-, and as long- as the seven preceding- tog-ether ; the maxillary palpi exserted, and the 

 labial palpi short, stretched forwards, and 3-jointed, with a point at the tip. 



The others have but a sinf^ie tarsal unguis, and some of these have the maxillary palpi very long and elbowed, 

 the second and fourth joints being; especially elone;ated. 



Pi-elaphiis proper, differs from the two following; by liavma; the anteimrc evidently lunger than the head and 

 thorax, and terniinated by a club formed of tlie last three juiiits, wbicii are evidently lon^^er than the preccdni--. 

 [Ps. Hcrb^l'tl, and several other British species.] 



Bijlhinus, Leach (havini^ the second joint of the antennx- thick and dilated into a lateral tooth— i'.?. scrnrtijcr, 

 Reich.), and 



Areopagus, Leach (having the second joint of the antennri.' slendei", and the basal one sometimes dilated — Ps. 

 glabricoUis, Leach), have the ninth and tentli joints of the antennae scarcely thicker or larger than the preceding, 

 but the eleventh very Iarg:e. 



In others the maxillary palpi are shorter than the liead and thorax, and the fourth joint, at least, is short, and 

 ovoid or trian;:jular. 



C7c/n"^/t?A% Reichenb., has the three terminal juitits of the maxillary palpi armed ^vith a tooth of the outside. 

 [C7. palpalis, a continental species.] 



Brijaxis, Leach {and Ei/plecius and T^/c/ms, Leach), have the maxillary palpi of the ordinary form, the last joint 

 long-er, conical, or hatchet-shaped ; the thorax is short, and scarcely lono;er than broad; the form of the last joint 

 of the palpi and of the joints of the antennae, althoug^h offering good characters, does not appear sufficiently 

 important for the establishment of [Leach's] g-enera. 



The terminal Pselaphiens have the aiitenna; composed of only six joints, or are even inarticulate. 



Clavigi^r. 



C/ai'/(7t'r proper has distinctly G-jointed antenn;c, the eycrf appenr wanting, and the mnxillary palpi are very 

 short. The species are found under stones, and in the nests of small yellow Ants. [Claiiger faveolatm, a minute 

 species/lirst detected by me in Ens'land in 1S38, in Whychwood Forest, Oxfordshire.] See the monog:raphs of 

 Gerniar in the third volume of his Magfiain dcr Entomologie, Aube, GylSenhall, [and particularly the recently pub- 

 lished memoir of Schmidt.] 



Articcrus, Dalm., has the antenna: apiiarently composed of a single joint, forming a long cylinder, truncated at 

 the tip ; the eyes are dirstinct. A. annafns, obser^'ed by Dalman in gum copal. 



Note. — The tarsi of Bcrmestcs a/omariiis, De Geer, having appeared to :,I. Lcclerc de La\al to be 

 composed of only a single joint, we had formerly estabhshed for its reception a new primary section 

 of tlie Cnhjopterii, wliieh we hail thenre named Monomera. Fischer adopted this section, giving 

 the generic name of Clamhus to the insect; Stdiuppell had also proposed for it that of rtiUvui ; 

 M. GyUenhall has, however, reunited the species to Scaphidiam, and, in fact, we consider that tliis 

 new genus ought to be ]>laccd near tliat goniis ; tlic section Monomera must, therefore, be suppressed. 

 [Having carefully examined tliese minute insects, 1 am able to state that their tarsi consist of 

 several joints.] 



THE SIXTH ORDER OF INSECTS,— 



ORTHol'TEUA, (Ulonata, Tabr.), [Oermaptera, De Geer],— 



United, for the most ])art, l)v Liinireiis with the Ilemiptera, and by GeolTvoy with tlio Colc- 

 optcra, Init fonning n ])ecnliar division, exhibit a bi.idy L'X'VieraUy h'ss firm than the last men- 

 tioned order; soft, seniimeinljranoiis, wing-covers much nerved, anil not uniting at the sutin'e 

 ni a straiglit hne ; wings folded lonjntudinall}', and (d'ten fan-like, divnled I>\' transverse 

 nervnres ; maxilhc always terminated by a corneous denticulated piece, and covered by a 

 p;alea, corresponding with tlie outer division of the maxilliE of the Coleoptera; and lastly, a 

 kind of tongue, or epiglottis. 



