174 THE CANADIAN EN TCMOLOGJST. 



Length, 12-14 mm. ; length of the antenna;, 4 mm. ; length of the 

 abdomen, 8 mm. ; length of the last abdominal segment and the for- 

 ceps, 2 mm. 



Habitat : Kentucky (Packard), District of Columbia (Nathan Banks). 



Japyx americanus, sp. nov. 



Head transverse, broader than long. Antennae twenty-four jointed, 

 segments one to five cylindrical, subequal ; the following segments thicker, 

 spherical. Prothorax nearly as broad as the head, concave in front. 

 Abdomen gradually broader behind, segments immaculate. Segments 

 one to six rounded in the sides behind ; the seventh emarginate behind, 

 posterior angles produced into stout spines, pointing inward; the eighth 

 segment equal to the seventh, subequal to the sixth, very slightly emargi- 

 nate behind, posterior angles slightly produced, not spinate ; ninth 

 segment one-fourth the length of the eighth, posterior angles slightly pro- 

 duced ; tenth segment and forceps subequal in length, together equal to 

 the four preceding segments. Right arm of the forceps scarcely broader 

 than the left, with two large tubercles on the inner margin, one just be- 

 fore the middle and the other beyond it ; in front of the larger tubercle 

 the inner margin is convex with five smaller equidistant tubercles, 

 between the larger tubercles the inner margin is straight with six equi- 

 distant tubercles, beyond the last tubercle the inner margin is concave 

 with many small tubercles. The left arm is broadest at base, gradually 

 tapering to the apex ; at one-third of the length from the base on the 

 inner margin there is a large tooth, in front of and adjacent to this tooth 

 are three smaller tubercles, which are as large as the larger tubercles 

 of the right arm and with their apices broadly rounding ; beyond the 

 tooth the inner margin is convex with nine feebly marked tubercles, 

 giving a crenulated appearance ; beyond these tubercles the inner margin 

 is simple. 



Length, 14 mm. ; length of the antennas, 5 mm. ; length of the abdo- 

 men, 10 mm. ; length of the last abdominal segment and forceps, 3 mm. 



Habitat : Olympia, Washingcon State. 



For the discovery of this interesting species science is indebted to Mr. 

 Trevor Kincaid, of Olympia, Washington. 



A third species of Japyx has been described from Mexico. It can be 

 distinguished by its longer antennae, consisting of from forty five to forty- 

 eight segments. 



