394 INSECTA. 



We divide the Patellimani into those in which the head becomes 

 insensibly narrowed behind, or at base, and those where this contrac- 

 tion occurs suddenly behind the eyes in such a manner that the head 

 seems to be supported by a kind of neck or pedicle. 



The first also may be subdivided into two. 



Some, in which the mandibles always terminate in a point, and the 

 palette of whose tarsi is always narrow, elongated, and formed by the 

 three first joints, the second and third square, have the labrum entire 

 or nearly unemarginate, and one or two teeth in the emargination 

 of the mentum; the anterior extremity of the head has no border. 



Here, as in the preceding ones, the under part of the palettes of the 

 tarsi present two longitudinal series of papillae or hairs, with an inter- 

 mediate space, and not a compact and continuous brush. The exterior 

 palpi are always filiform and terminated by an almost cylindrical or 

 ovoido-cylindrical joint. 



Sometimes the body is strongly flattened. 



DOLICHUS, Bon. 



The Dolichi approach the last subgenera, and are removed from 

 all the others by the hooks of their tarsi, which are dentated beneath. 

 Their thorax is cordiform and truncated *. 



PLATYNUS, B on, 



Similar to Dolichus in the form of the thorax, but the tarsial 

 crotchets are simple. 



The wings are absent in some, or are imperfect f (a). 



AGONUM, Bon. 



Where the thorax is almost orbicular J (6). 



Sometimes the body is of an ordinary thickness, the thorax being 

 always in the form of a truncated heart. 



* Carabus flavicornis, Fab.; Preysl., Bohem. Insect., I, iii, 6, and some other 

 species of the Cape of Good Hope. 



f Platynus complanatus, Bon. ; Carabus angusticollis, Fab. ; Panz. Faun. Insect. 

 Germ., LXXIII, 9; Platynus blandus, Germ., Insect. Spec. Nov., I, p. 12; Cara- 

 bus scrobiculatus, Fab. ; Harpalus livens, Gyll. 



J Harpalus viduus, Gyll.; Panz., Ib., XXXVII, 18; Carabus marginatus, Fab.; 

 Panz., Ib.XXX, 14; Carab. 6-punctatus, Fab.; Panz. Ib. XXX, 13, and XXXVIII, 

 17 ? C. parum-punctatus, Fab. ; Panz., Ib. XCII, 4 ; C. l-punctatus, Fab. ; Oliv., 

 Col. Ill, 35, xiii, 158. See Catalogue, Dej., who has formed a new genus of the 

 A. rotundatum, and some others. 



K$* (a) American species; Plat, erythropus, Dej.; P. angustatus, Id. Species III, 

 p. 97 99. ENG. ED. 



(6) The genus, here alluded to by our author, is the OLISTHOPUS, Dej., who, 

 while he seems strongly inclined to form but one section of Agonum and Anchomenus, 

 from the occasional, almost total, obliteration of the distinguishing characters of 

 each, so that in some cases it is hardly possible to say whether an Insect should 

 be referred to the first or the second, has deemed it necessary to separate the 

 above species, which ditfer from Agonum in several essential characters, and prin- 

 cipally in the absence of the tooth of the middle of the emargination of the mentum. 

 See his Species, &c., Ill, p. 176, and add A. octopunctatum (Feronia octopunctata, Say), 

 cupripenne, nitidulum, moroswn, femoral urn, melanarium, &c. &c. ENG. Ed. 



