184 



INSECTS OF SAMOA. 



3 examples (Bryan) : 24, 25, 30.ix.1923, 10 examples (Swezey and Wilder) 

 (Type, 25.ix.1928). 



Type in the Bishop Museum ; paratype in the British Museum. 



Described from twenty examples. It seems evident that the species is 

 confined to Tutuila. 



4. Stygnobia cauta Weise (Text-fig. 4). 



Stygnobia cauta Weise, Archiv fur Naturgesch., Ixxxviii, Abt. A.. Heft. 10, pp. 154, 1922. 



Stygnobia annulipes Weise, he. cit. 



Body oblong-ovate. General colour varying from shining dark red-brown 



to lighter brown ; central area of front 

 of head with a blackish patch, which is 

 sometimes obsolescent ; antennal seg- 

 ments in most cases tinged with fuscous ; 

 pronotum may be darker (almost pitch- 

 black) than elytra ; on under side 

 abdominal sternites may be lighter than 

 rest of surface, distribution of lighter 

 and darker shades varying considerably ; 

 legs often lighter brown ; in many cases 

 at constriction near apex of femora and 

 at two places on tibiae there are dark 

 brown rings encircling the limbs ; these 

 rings may be faint or disappear alto- 

 gether, and may not be seen on all the 

 legs at once, being well-marked on some 

 while obsolescent or absent on others. 

 In some examples before me there is a 

 black broad longitudinal stripe along the 

 elytra ; this stripe is also very variable, 

 appearing as a strongly developed mark 

 in some examples but becoming very 

 faint in others ; on the basal area the 

 stripe is bifurcate ; when strongly de- 

 veloped it is broad, covering a considerable portion of the elytral surface. 

 In some examples the elytral punctures are black. 



Text-fig. 4. — Stygnobia cauta Weise. x 12. 



