PROTOPAUSSUS. 



447 



Wasmann lias done much good work at the family, having been 

 led to study it through the myrmecophilous habits of its members. 

 Several species have since that time been described by Gestro, 

 who in 1901 (Ann. Mus. Genova (2) xx, pp. 811-850) published 

 a systematic catalogue of the Paussid.e, which was made use of 

 by Desneux in the most recent work on the family (Genera 

 Insectorum (Wytsman), Paussidae, 1905). I have obtained much 

 help from all the books above mentioned, and am especially in- 

 debted to M. Desneux (and so indirectly to Dr. Gestro) for saving 

 me much trouble with regard to the bibliography and references. 

 I would also thank Father Wastnann for kindly sending me several 

 valuable papers, and Mr. C. O. Waterhouse, Mr. G. J. Arrow, and 

 Mr. H. E. Andre wes for much help with specimens. 



Table of Subfamilies. 



I. Antennae eleven-jointed, moniliform . . Protopaussinae, p. 447. 



II. Antennae with from two to ten joints 

 which are always more or less dilated 

 and compressed, and are extremely 

 variable. 



1. Maxillary and labial palpi longer and 



less thickened, not concealing the 

 buccal cavity ; antennae with from 



six to ten joints „ , . Cerapterinae, p. 449. 



2. Maxillary and labial palpi shorter and 



much thickened, completely hiding, 

 when at rest, the buccal cavity ; an- 

 tennae with from two to six joints 

 (mostly two-jointed) , Paussinae, p. 453. 



Subfamily PROTOPAUSSIN^E. 



This subfamily consists of one genus and two remarkable species, 

 which are characterized by having the antennae eleven-jointed, 

 long, slender, and cylindrical, thus approaching closely to the 

 Carabideous type ; the palpi are large and free, the labial con- 

 sisting of three joints and the maxillary of four. 



Genus PROTOPAUSSUS. 



Protopaussus, Gestro, Ann. Mus. Genova, xxxii, 1892, p. TOG. 



Form elongate-oblong, depressed; head short, eyes large and 

 prominent, with a slight emargination behind ; antennas long and 

 slender, with eleven free joints, the second the shortest, the third 

 longer, and the following more or less moniliform, the eleventh 

 being longer than the preceding and rounded at its apex ; man- 

 dibles strongly arcuate, with the extremity sharp and pointed ; 

 maxillary palpi 4-jointed, with the first joint rather short, sub- 

 cylindrical, the second longer, slightly subcorneal, the third rather 



