204 AFRICAN CARABIDAE. 



cially in the <ƒ narrower and more ovate. Males of minor 

 development of the two forms agree exactly iu the form 

 of the thorax; examples of A. niveicincta of higher develop- 

 ment I have not seen ; in A. omostigma they differ in the 

 lobe of the thorax being much prolonged , dilated and flat- 

 tened out behind with the exterior angles produced and 

 acute. A similar difference in thoracic structure is present- 

 ed in the males of all the allied species. 



N etr o der a V e t h i, nov. spec. 



N. formicaria (Erichs.) fere duplo major, elytris a basi 

 usque longe ultra medium gradatim latioribus , nigra obscura 

 (subtus nitida) partim sparse griseo-pubescens elytrisque 

 vitta suturali (a basi usque ad medium) fasciolaque angu- 

 lari prope apicem densius subochraceo-pubescentibus : capite 

 post oculos parvos elongato semi-ovato , punctato : thorace 

 angusto, medio perparum dilatato, sat dense punctato, dorso 

 costis obtusis duabus lateribus utrinque acute carinatis: ely- 

 tris utrinque tricarinatis, carinis altissimis acutis, interiori- 

 bus 2 apice valde abbreviatis , interstitiis seriatim foveatis 

 et punctulatis , apice flexuoso-truncatis , truncaturse angulo 

 exteriori dentiformi, suturali subrecto. — Long. 18 millim. Q. 



Benguella (Veth & v. d. Keilen). — A single example. 



Belongs undoubtedly to the genus Nestra (Chaud.) which 

 I agree with Perroud in considering quite distinct from 

 Atractonotus , so that if the latter is to be separated from 

 Polyhirma , so must the former. Its more obvious points 

 of distinction are the shorter semi-ovate prolongation of 

 the head behind the eyes and the tricarinate elytra. Poly- 

 hirma Baucis (Dohrn) from the description must belong to 

 Atractonotus and is probably hardly distinct from A. Mul- 

 santi (Perroud). 



Aulacillus, nov. gen. 

 (Subfam. Scaritinse). 



Apterus. Caput relative magnum kevissimum, epistoma 

 bidentatum. Mandibular elongatse, subrectse, supra bicarinatse 



Notes from the Ley den Museum, Vol. XI. 



