Japan and the Loo-Choo Islands. 635 



distinct dark ring near the apex, but often more extensively 

 darkened ; tlie aitex of the metatarsi and the tarsal segments 

 are u-iually slij^^htly (hirkeiie I also. 



Material, — A male and female, collected by Mr, S. Akl- 

 yama at Idzu, Japan. 



Peeudobiantes insulanui^j sp. n. 



cJ . Scufnm unarmed ; a few indistinct and obsolete 

 granules only are present on the posterior segments of the 

 scutum and a number of obsolete granules alonji: the lateral 

 margins. Ventral surf ace : coxm of Hrst leg with a number 

 of granules as in P. jnpouicus, sp, n, 



CheVic-ercr. — Secoml segment considerably swollen; near 

 the inner side of its dorsal surface it is furnished with tliree 

 granules arranged in a longitudinal series, two of them being 

 minute, but the apical one large and conical. A row of four 

 teeth is present on the edge of the immovable finger ; the 

 •first two teeth (counting from the proximal end) are rather 

 large, the two remaining ones minute. Close to its proximal 

 end the edge of the movable finger is armed with a fairly 

 large tooth, which is separated by a considerable gap from 

 the four teeth of the distal half; the latter resemble those of 

 the immovable finger, the first two of them being fairly large 

 and the other two small. 



Palp. — Trochanter armed above with a conical process 

 and with two others below. A row of granules is present on 

 the upper surface of the femur and a row of six well-marked 

 processes on its ventral surface ; a dentiform granule is 

 situated on tiie inner side below. Tibia and tarsus strongly 

 armed; the number and relative size of the spines being 

 exactly the same as in P.japonicus. 



Legjy. — Number of tarsal segments 9, 20, 7, 8. 



Aleasurements in mm. — Total length 3*75 : length of first 

 leg (from base of femur) 11*75, of second 19, of third 15, of 

 fourth 19-75. 



\_Colour. — Owing to the length of time that this specimen 

 Las been preserved in spirit the markings have practically 

 disappeared, and so I have not described the coloration.] 



$ . In the same tube as the male example described above 

 there is another specimen which I identify with doubt as the 

 female of the same species. It is much darker in colour than 

 the male specimen, and differs also iu the following details of 

 structure : — 



Chelicera. — Second segment not swollen, and none of the 

 four granules of the row on its dorsal surface are of large 



42* 



