324 Deutsch. Ent. Zeitschr. 1909. 



Family 4. Labiduridae. 



This important family is well characterised by the form of 

 the pygidium wliich is generally large , but not very prominent, 

 as its Upper portion is almost vertical and fused with the posterior 

 margin of the last dorsal segment. The junction is marked by 

 a Sharp fold in all cases except the aberrant Gonolahina huhlgatzi 

 Verh., and consequently this junction is invisible from above. 



For division into subfamilies I suggest at present the following 

 arrangement ; 



Table of subfamilies. 

 1. Mesosternum valde angustatum . . . 1. Allosiethhiae. 



1. 1. Mesosternum haud angustatum. 



2. Prosternum angustatum 2. Esphalmerdnae. 



2. 2. Prosternum haud angustatum. 



3. Corpus cylindricum , apterum ; antennae paucisegmentatae ; 

 prosternum elongatum, angustum . . 3. BrachylaUnae. 



3.3. Corpus plus minus depressum ; antennae longae , multi- 

 segmentatae ; prosternum haud plus quam duplo longius 

 quam latius. 



4. Metasternum postice sinuatum .... 4. Pyragrinae. 



4. 4. Metasternum postice truncatum vel rotundatum. 



5. Mesosternum truncatum ...... 5. Labidurinae. 



5.5. Mesosternum rotundatum . . .... . 6. Psalinae. 



Subfamily 1 . Allo s tethin ae. 



This is for the Single genus ÄUostethus Verh. , characterised 



by the strongly narrowed pro- and meso-sternal plates (see fig, 3). 



There are several species described by Verhoeff but probably two 



or three are mere varieties. The type is Ä. in die 21711 Hagenb. 



Subfamily 2 . Es pli a l m e n i n a e. 



This is for Esphalmenus Burr , which as I show elsewhere, 

 is for the Gonolahidae as understood by Verhoeff, that is , those 

 species with strongly dilated abdomen and narrowed prosternum. 

 The latter feature precludes G. javana Borm. , the type of Gono- 

 labis, which is placed near to Anisolabis. 



We ränge here the aberrant Gonolahina kulügatzi of Verhoeff. 



Subfamily 3 . B r achy lahinae. 

 This well marked group has recently been revised (Ann. 

 Mag. N. H. [8] II, p. 246 [1908]) and no further remark is neces- 

 sary here , beyond a repetition of the fact that the Isolabidae of 

 Verh. are the same thing as the Brachylabinae. 



