CUCUJIDiE. MONOTOMIDjE. 



107 



The following table will show the chief divisions : — ■ 



I. Maxillae covered by corneous plates. 



i. Anterior coxal cavities open behind Passandrinte. 



ii. Anterior coxal cavities closed behind. 



1. Tarsi 5 -jointed A ncistriinte. 



2. Tarsi 4-jointed Prostominje. 



II. Maxillae exposed. 



i. Anterior coxal cavities open behind CucimNiE. 



ii. Anterior coxal cavities closed behind. 



1. Tarsi not lobed beneath SiLVANiNiE, 



2. Tarsi with the third joint lobed. 



A. Tarsi with the fourth joint not 



smaller than third Hemipeplin^e. 



B. Tarsi with the fourth joint very 



small Telephoning:. 



The corneous plates covering the maxillae in the first section 

 are very peculiar, and the species possessing them were considered 

 to belong to a separate family, Passandrid.t:, until the close 

 affinity between the larvae of Prostomis and those of certain of the 

 Cucujidje was discovered. 



Family 35. MONOTOMIDJE. 



Antennce inserted under the sides of the forehead, ten-jointed, or 

 ohsoletely eleven- jointed, ivith the club solid or obsoletely two-jointed ; 

 maxillce free; anterior coxae, globular, their cavities broadly closed 

 behind ; epimera of mesosternum reaching the middle coxal cavities ; 

 abdomen with five free ventral segments, of which the first and fifth 

 are longer; males with a small extra ventral segment; tarsi five- 

 jointed, but apparently three-jointed ; pygidium exposed. 



About 100 species are included in the family, winch are very 

 widely distributed. They are, as a rule, very small insects, which 

 occur under bark, among rubbish, etc., and a few are myrmeco- 

 philous. A considerable number of new species have been found 

 in Central America by Mr. Champion, mostly belonging to the 

 genera Europs and Bactridium, which are very closely related to 

 the CucuJiDiE. The family is also closely allied through Aneurops 

 to the RmzoPHAGiNiE among the Nitidulid.e. By some authors 

 the MoNOTOMiDiE have been included under the L,vTHRiDiiniE, 

 probably on account of their small size, general appearance, and 

 apparently 3-jointed tarsi, but they are quite distinct *. 



One species of Monotonia, one of Monotomopsis, and two of 

 Europs have been described from India. 



* The number of tarsal joints in the Monotomid.u has been disputed : Horn 

 gives them as three, Leconte as five ; Ganglbauer (I. c, p. 571) agrees with 

 Leeonte, but adds that there are at any rate indubitably five in the genus 

 Monotonia. 



