INTRODUCTIOX. 



In order to render the views I have adopted more distinct, some 

 of the details of the Mandibulata are introduced ; though I must 

 remark that a great mass of the Coleoptera, comprising most of 

 the Heteromera of Latreille, seems to require extensive removals ; 

 but whether the CEdemeridae imitate the Telephoridae and Melyridsc 

 by any real affinity, or merely by the property which opposite points 

 of the circle possess of resembling each other, I am not prepared 

 to show : it is however supposed that these families are allied : — 

 the situation of the Scydmsnidse is very doubtful. 



Some of the remarkable affinities in the Order Coleoptera may 

 be still further exemplified by the following more detailed tabular 

 view of the first seven groups ; which it is unnecessary to observe, 

 might be rendered still more complete were it not that want of 

 space necessarily obliges me to be concise. 



Dyti- ... 88 

 cus. Gyri- 



nus. 



Haliplus. 



Bembidium. 



Ela- 

 phrus. 



Cicindela. 



57 



Carabus. 



11 



Dromius. 



Lesteva. 



Onia- 

 liiun. 



110. 1 



Hetero- Sphseri- 



^ cerus. dium. 



I Parnus. Hydro- 



philus. 



93 



Helophorus. 



Silpha 



126 



Nitidu- 

 la. . 



120 



Dermes- 

 tes. 



164 

 149 

 Micro- 

 , peplus 



Buprestis. 



Cetonia. 



Trox 



Sino- 

 dendron. 



180 



Byrrhus 179 



Abraeus. Hister. 



Bostri- 

 chus. 



Hylur- 



gus. 



Rhin- 

 colus. 



By this view the affinities of Dromius to Lesteva, Elaphrus to 

 Cicindela, Bembidium to Haliplus ?, Gyrinus to Heterocerus and 

 Parnus, Helophorus to Silpha, Micropeplus to Abraeus, Byrrhus to 

 Trox, Sinodendron to Bostrichus, Hylurgus to Rhincohis,Omalium 

 to Nitidula, &c. are rendered evident, notwithstanding in a linear 

 arrangement several hundreds or even thousands of species neces- 

 sarily intervene, and apparently disturb the series, thereby exempli- 

 fying the utter impracticability of placing the whole in one con- 

 tinuous succession*. 



• The figures in the table point out the position of other genera, which 

 are introduced in order to render the circular distribution of each group 

 more evident ; the numbers corresponding with those of the i-espective 

 genera in the Catalogue, as do those in the first and last of the following 

 tables. 



