268 PROCEEDINGS OF THE AMERICAN ACADEMY. 



are simple and vary in number from eight to ten ; the proximal spines 

 are smallest and the two most distal are largest. Each mucro (Fig. 32) 

 bears a single blunt tooth near the middle. Length, 2.5 mm. 



Described from three types, collected at Komaba, Tokyo, November 

 16, 1894, and Oji, Tokyo, November 18, 1894. These had unfortunately 

 dried and shrivelled. 



This species is intermediate between T. mhiutus Tull. ('76, p. 32, Taf. 

 8, Figs. 9, 10) which has 2-3 teeth on the superior claws and 10-11 den- 

 tal spines, and T. arcticus Schott ('93, pp. 43, 44, Taf. 3, Figs. 8, 9) which 

 possesses 4-5 teeth and 7-8 spines. 



Fam. SMINTHURID^. 



Genus Papiuius Lubb. 



Papirius denticulatus, n. sp. 



(Plate 3, Figs. 33-36.) 



Pale chrome yellow, with purple markings (Fig. 33). Head sparsely 

 clothed with stout, stiff setai ; eyes upon black patches. Antenna; 

 purple, three fourths as long as the body, with segments related nearly 

 as 1 : 4 : 7 : 2 ; third segment with at least nine distal subsegments and 

 dilated apex ; terminal segment lanceolate in outline, with the basal 

 half composed of four subsegments. Legs yellow, banded with purple, 

 with stout bristles ; superior claws (Fig. 34) slender, nearly straight, the 

 outer margin unidentate one third from the apex, both inner margins 

 bidentate ; inferior claws (Fig. 34) over half as long, with acute apex, 

 almost parallel sides, long, knobbed, subapical hair, and two unequal, 

 perpendicular teeth on the rounded basal portion of the inner margin ; 

 the smaller tooth is occasionally absent ; a single, slender, unknobbed 

 tenent hair is present. Abdomen elongate-ovate, sparsely clothed with 

 short, stitf seta;, which become longer and numerous posteriorly. Color- 

 ation as shown in Figure 33 ; two broad paramedian stripes occur upon 

 the anterior half of the dorsum ; several oblique wedge-shaped bands 

 extend upward and backward from either side ; a median U-shaped 

 mark is conspicuous on the posterior part of the dorsum. Furcula 

 yellow, bristly, with segments related as 2 -. 4 : 1 ; manubrium broadly 

 oblong in dorsal aspect ; dentes slender, with long, stout, lateral bristles 

 (Fig. 33) which become barbellate toward the apices of the dentes (Figs. 



