597 



mens from the last-named locality have been described under 

 the name of Pseudohis hospes Perkins. 



Cossonus dentipes sp- n. 



Male, female. Color shiny black, the apical half of the rostrum, the 

 antennae and the legs reddish or yellowish brown, and the body with 

 markings of the same color; the pronotiim with a marking like the head 

 of an inverted trident, its base resting on the subapical transverse furrow 

 and the three prongs almost reaching the base of the pronotum, the 

 median one being a little broader and better defined than the others; 

 each elytron with a large oblong basal patch lying between stria 2 and the 

 shoulder and varying from rather longer than to twice as long as broad, 

 and a small ovate preapical patch lying between striae 1 and 3 ; the 

 prosternum with the sides broadly and the front and hind margins 

 narrowly black. The rest yellow-brown, a narrow pale band connecting 

 the prosternal with the pronotal patch anteriorly; the rest of the sternum 

 more or less suffused in the middle, and the venter along the margins, 

 with red-brown. 



Head with only a very few minute punctures on the vertex, which 

 is separated from the forehead by a very shallow transverse impression; 

 the forehead rather strongly and closely punctuate, with a deep central 

 fovea. Eostrum half the length of the prothorax in the male, shorter 

 in the female, subcompressed laterally in the basal half, strongly dilated 

 and subquadrate in the apical half; the punctures rather finer and 

 more sparse than those on the forehead. Prothorax about as long as 

 broad, with the sides gently rounded, broadest behind the middle, strongly 

 constricted near the apex, the constriction continued across the disk 

 as a deep curved punctate furrow; the basal margin shallowly bisinuate, 

 and just within it a deep transverse impression on each side of the 

 middle line; the disk flattened, with two very irregular admedian rows 

 of large punctures enclosing a smooth strip, the adjoining areas of the 

 disk on each side with sparse punctures, those at the sides being much 

 denser and coarser. Elytra oblong-ovate, parallel-sided from the shoulders 

 to the middle; the shallow striae containing large separated punctures 

 which are nuich diminished behind; the intervals almost flat, not 

 narrower than the punctures, and bearing rows of extremely minute 

 punctures. Legs with the front femora of the male armed with a stout 

 tooth, those of the female simple. Length, 4 mm.; breadth, 1.2 mm. 



Habitat. — Upolu Island: One male, one female, Apia, 1916 

 (Dr. H. Swale). 



Type in the British JNIuseum. 



I am not acquainted with any other Cossonine that has a 

 cooth on the femora, and its occurrence as a sexual character 

 is even more remarkable. The greater length of the rostrum 



