Relationships existing amongst Natural Objects. 411 



the Carabideous genera thus analogically represented not less strong. The 

 genus Carabus, for Instance, comprises species {Carabus genwiatus, F.) which 

 in their habit and the peculiar sculpture of their elytra analogically resemble 

 Calosoma Scrutator, whilst Carabus Fabricii, &c., in the flattened form of the 

 body represent Licinus. 



In like manner, Catascopus, belonging to one of the subfamilies of Carabidce, 

 represents, as Mr. Kirby, in the memoir above referred to, notices, some of the 

 insects composing another subfamily, Bembidiidœ ; whilst IMasoreiis (a genus 

 nearly allied to Trechus), in the posteriorly dilated thoracic lobe, represents 

 Lebia, &c. 



These Carabideous insects must however be regarded as related together 

 by affinity (as forming part of the same family), when a relation of ana- 

 logy is endeavoured to be traced between them and the species of other fami- 

 lies, as, for instance, between Carabus and the Helopideous genus Adelium, 

 noticed above. 



In order to illustrate the relation of analogy exhibited by an insect belong- 

 ing to one tribe but possessing tlie aspect of another, Mr. Kirby, in the memoir 

 above referred to, described a genus under the name of Pseudomorpha, of 

 which he says, " that even a practical entomologist, if he chanced to examine 

 a specimen that had lost its antennae, might at first regard it as a Nitidula or 

 Ips, F., or as coming near that genus in the system ; but when he came to 

 study it in detail he would discover to his surprise all the essential diagnostics 

 of one of Latreille's Entomophagi. The characters which give it an air and 

 general appearance unlike those of its tribe are its sessile wide head received 

 into the thorax, and its short antennœ and legs." 



For the purpose of completing the illustrations of this curious genus given 

 by Mr. Kirby in the plate accompanying his memoir, I have here added an 

 outline figure of the insect now in the collection of the Entomological Society 

 of London, the original being incorrect in the relative proportions of the legs, 

 and no notice having been taken either in the description or figxu'e of the 

 erect rigid hairs with which the margins of the elytra are clothed. Mr. Kirby 

 indeed describes the eyes as being •' in medio pilosi ;" but this is not correct, 

 as it is only that part of the skull which borders the underside of the eyes 

 which is furnished with rigid hairs, which extend beyond tlie middle of the 



