BRACHYGLUTINI 201 



Intermediate femora simple, not excavated 7 



6. Antennal segments IV, V, VI, VII, VIII forming an arc; IV very- 



swollen and much larger than third or fifth; VII and VIII trans- 

 verse, mesially produced Decarthron chichion Male 



Antennae simple, not as above Decarthron noctiphoton Male 



7. Apical margin of fourth and basal margin of fifth visible stemites in- 



volved in a small, distinct median depression 



Decarthron noctiphoton Female 



Apical margin of fourth visible sternite simple 



Decarthron chichion Female 



EUTELEIA (Raffray, 1904) 



This is a small genus of three known species, two known from Brazil and 

 one from Mexico, allied to Decarthron by having on the ventral face of the head 

 a large, oval fossa with sharply defined or carinate borders, and in having an- 

 tennae of only ten segments. It is easly separated from Decarthron on the third 

 segment of the maxillary palpi. In Euteleia this third segment of the maxillary 

 palpi is subconical to ovoidal, much longer than wide, subacute apically and 

 almost pedunculate to acute at base; the second segment is similarly very long, 

 slender basally, gradually widening apically to form a rounded apex which is 

 as wide to slightly wider than the third segment; fourth segment longer than 

 third segment, shorter than second segment, similarly stream-lined with rounded 

 apex and subpedunculate, subacute base, and bearing a long, slender palpal cone 

 at apex. This distinctive palpus quickly separates this genus from Decarthron, 

 Drasinus and Ectopocerus. 



Key to the Species 



Third segment of the maxillary palpi relatively very long, distinctly 

 more than half the length of the fourth (last) segment) recens 



Third segment of the maxillary palpi shorter, not more than half the 



length of the fourth segment 2 



(However, see Raffray, 1904, pp. 304-306) 

 2. Antennae with the segments longer than wide; 1.6 mm.; metasternum 

 sulcate, with two setose bundles between the middle coxae at their 

 posterior margins nodosa 



Antennae with segments III-VII moniliform, VIII a little larger, and 

 nearly square, IX much larger and square; 1.2 mm trifoveata 



nodosa Raffray. 1904. Mexico. 



recens (Schaufuss). 1879. Brazil. (Bryaxis). Genotype. 



trifoveata Raffray. 1904. Brazil. 



ITAMUS (Raffray, 1904) 



This is a monotypic genus, limited to Brazil, and closely related to Decar- 

 thron in the ten-segmented antennae, ventral surface of the head with a median 



