266 PROCEEDINGS OF THE AMERICAN ACADEMY. 



the apex of each antennal segment are frequently dark purple ; the 

 antennre, legs, and furcula are pale yellow. The head hangs down 

 (Fig. 24), is elongated, and clothed with numerous proclinate bristles 

 interspersed with extra long, slender, erect bristles ; similar long bristles 

 occur also on the body, antennge, legs, and furcula. Eyes eight on 

 either side (Fig. 25), arranged in two longitudinal rows, on black 

 patches. Antennae one fourth longer than the body, bristly, with seg- 

 ments cylindrical or slightly dilated and related to each other in length 

 as 25 : 31 : 27 : 35. The body (Fig. 24) is elongate-cylindrical, clothed 

 with reclinate bristles and scaleless ; its segments, measured along the 

 median dorsal line, are related as 2 : 12 : 8 : 6 : 7 : 2 : 34 : 4 : 4. The 

 thorax curves downward ; the mesonotum almost covers the prothorax 

 and bears clavate bristles on its anterior border. Legs long, slender, 

 and bristly; superior claws (Fig. 26) stout, but little curved, with a 

 tooth on the inner margin, one third from the apex, and a second tooth 

 near the base ; inferior claws half as long as the others, broad, with 

 acuminate apex, convex outer margin and a single tooth, borne upon an 

 obtuse angle at the middle of the inner margin ; a single tenent hair is 

 present which gradually expands to a broad truncate apex. Furcula 

 five eighths as long as the body and bristly ; manubrium cylindrical, 

 slightly shorter than the dentes ; dentes gradually tapering, each bearing 

 a large oval scale near the apex (Fig. 27) ; mucrones oblong, somewhat 

 curved, with three terminal lobes, which are subequal, rounded, and 

 surrounded by barbelhite bristles projecting from the dentes. Length, 

 2 mm. 



Described from seven types, collected at Komaba, Tokyo, October 

 25, 1894. 



This curious form is closely related to the Mexican Cremastocephal us 

 trilobatus Schott ('96, pp. 175-178, Plate 16, Figs. 20-23, Plate 17, Figs. 

 25, 26), which has hitherto been the only representative of its genus. 

 The specific distinctness of the two species is evident when my figures 

 are compared with those of Schott ; the chief differences exist in colora- 

 tion and the form of claws and mucrones ; the dental scale is elliptical 

 in trilobatus, but oval in the species now described. I may mention that, 

 although Schott states tliat the upper claw of trihbatus is "provided 

 with two teeth," there are three represented in his figure. 



