ARHYTODINI 345 



9. Known only from Bolivia; Male with II quadrate, III-VIII gradually 

 increasing in length ; 2.7 mm boliviensis 



Known only from Venezuela 10 



10. VI and VIII nearly two times longer than wide, IX and X nearly four 

 times longer than wide in the Male; antennomeres much shorter 

 with IX and X only three times longer than wide in the Female; 

 2.25 mm margaritaceus 



VI and VIII nearly two times longer than wide, IX and X about three 

 times longer than wide in the Male; VI and VIII slightly longer 

 than wide, IX and X about two times longer than wide in the 

 Female; 2.25 mm rubripennis 



Arhytodes achillei new species 



Type. Measurements: head 0.49 x 0.45 mm.; pronotum 0.43 x 0.52 mm.; 

 elytra 0.74 x 0.94 mm.; abdomen 0.67 x 1.07 mm. Total length 2.33 mm. 

 (PI. VI, XIX) 



Shining reddish-brown ; antennae and legs densely granulate-punctate ; ver- 

 tex and front sparsely, coarsely granulate; pronotum sparsely asperate-punc- 

 tate ; elytra subglabrous ; abdomen very sparsely asperate-punctate. Pubescence 

 as described above, with body setae golden and squamose setae white. 



Head with straight, oblique tempora nearly as long as eyes and meeting the 

 occiput at nearly a right angle; occipital margin deeply, semi-circularly incised 

 for median half of width. Vertex with sides subparallel and subcarinoid from 

 posterior angles to middle of eyes; vertex flat, with a broad, squamose V-shaped 

 sulcus, from occipital incisure one arm of this sulcus passes obliquely anteriad, 

 filling the space between eye and antennal tubercle. Eyes postmedian, promi- 

 nent, each composed of 26 veiy convex facets. The ovoidal eye does not have 

 the facets in rows but irregularly placed and in the type before me, the facets 

 are oddly bicolored, with the pigment sharply concentrated distad and the lower 

 two-thirds of the facets a translucent amber. Antennal tubercles separated by a 

 broad, short, squamose frontal sulcus, which does not extend posteriorly to join 

 the V-shaped vertexal sulcus. Mouth-parts as described above. Ventral surface 

 of head flattened, with a large triangular squamose patch each side. Cervicum 

 alutaceous. 



Antennae long (1.87 mm.) reaching well beyond posterior elytral margin; 

 segment I elongate cylindrical, about three times longer than wide; II slightly 

 longer than wide, narrower than first; III very short and quadrate; IV-VI 

 elongate-cylindrical, fourth one-third longer than third segment, fourth to sixth 

 progressively greatly increasing in length; VII elongate-cylindrical, subequal 

 to fourth; VIII elongate-cylindrical, subequal to sixth. These first eight are all 

 longer than wide, save for the quadrate third antennomere, and measure 1.07 

 mm. united. Club of last three segments measures 0.80 mm. united; IX elongate- 

 cylindrical, slightly longer than first, about as wide as first, two times longer 

 than eighth; X subobconical, longer than ninth; XI as long as eighth, slightly 



