TYCHINI 277 



well-formed, on a line which passes through the posterior margin of the eyes, 

 and placed on the simply convex, wholly unmodified head; (2) Antennae simple; 

 (3) Pronotum ovoidal with the usual antebasal, transverse sulcus; (4) Elytra 

 perfectly simple, lacking basal foveae, with wholly unmodified flanks and lack- 

 ing a satural stria; (5) Abdomen without any traces of marginal carinae, which 

 in itself is unique among neotropical genera; (6) Second tergite conspicuously 

 longer than first or third; (7) Six sternites in the female sex; seven sternites in 

 the male sex, this seventh sternite being very small, triangular, and not longi- 

 tudinally divided. 



cylindrica Raffray. 1896. Mexico. Genotype. 



INIOCYPHUS (Raffray, 1911) 



This is a monotypic Brasilian genus known only from the male sex, and 

 equally unrelated to other Tychini as indicated by the characters set forth in 

 the generic key. In addition to these it should be mentioned that the male sex 

 has six sternites only ; the abdomen is conical with the first three tergites nar- 

 rowly, but distinctly margined. 



iheringi Raffray. 1911. Sao Paulo, Brazil. Genotype. 



ANOPLOBRAXIS new genus 



This genus is distinct from other Tychini on the following combination of 

 characters: (1) Head transverse, with prominent eyes placed at middle of head; 

 (2) Ventral surface of head simple, lacking median longitudinal carina; (3) 

 Antennae widely separated beneath distinct ovoidal tubercles, eleven-seg- 

 mented, highly abnormal in the male sex; (4) Maxillary palpi simple, elongate, 

 and slender, four-segmented, with distal segment bearing a palpal cone; (5) 

 Pronotum nearly as long as wide, disc simple, with an antebasal, transverse 

 sulcus connecting a large, deep, pubescent fovea each side; (6) Each elytron 

 perfectly simple, lacking any modification of the flank, lacking basal foveae 

 and with rudimentary sutural stria; (7) Abdomen with first three tergites dis- 

 tinctly margined each side and male with six sternites; (8) Posterior coxae dis- 

 tant, separated by a distance equal to three-fourths of the median metasternal 

 length. 



Its novelty is enhanced by living with termites. 



Anoplobraxis guianensis new species 



Type Male. Measurements: Head 0.26 x 0.361 mm. through eyes; pronotum 

 0.335 X 0.35 mm.; elytra 0.56 x 0.737 mm.; abdomen 0.388 x 0.53 mm. Total 

 length 1.54 mm. Greatest width 0.74 mm. (PI. XIX, 2). 



Brownish-yellow with flavous, long shaggy pubescence; integument lightly 

 punctulate. 



Head transverse with rounded tempora which are as long as wide; eyes 

 prominent, at middle of head, as long as tempora, with about 24 rather large 

 facets ; vertex evenly convex, bisected at base by a short, low, thick carina which 



