128 Mr. R. I. Pocock on the 



ninth twice as long as the eighth, fusiform ; lower edge of 

 segments 5 to 8 black and thickened, but not notched or 

 otherwise modified. 



Measurements in millimetres. — Total length 47, of cara- 

 pace 17 ; width of carapace across the angles of the lateral 

 borders 9*5. Chela: length of segments along upperside, 

 femur 3*5, tibia 5*5, tibial apophysis 4; tarsus 4-2; tarsal 

 apophysis (immovable digit) 2 - 8, movable digit 4*5. First leg, 

 length of femur 12, patella 15, tibia 145, tarsus 105 ; fourth 

 leg^ length of femur 13-6, patella 5*2, tibia 14, tarsus (distal 

 four segments) 9 # 5 ; length of anterior three abdominal sterna 

 (along middle line) 6*5 ; length of first sternum 5, width 10" 5. 



Two female examples from Oo-Sima (Lu-Chu Islands), 

 collected and presented by Commander Alfred Carpenter, R.N. 



Th. sinensis of Butler, from Hong Kong, of which 

 Tli. Stimpsonii, Butler, appears to be the young, is very 

 nearly related to this species of Wood's ; but it seems to 

 differ in having the posterior border of the genital operculum 

 much less noticeably biemarginate, and the furrows on each 

 side of the median impression parallel, longer, and extending 

 almost to the posterior border of the plate. Moreover the 

 tarsi of the feet seem to be shorter, the length of those of the 

 first and fourth pairs of legs being respectively 9 and 8, while 

 that of the carapace is 16. In the structure of the palpi the 

 two are very similar, but in sinensis the secondary tooth upon 

 anterior border of the trochanter is well developed. I do not 

 consider that the absence in the Lu-Chu specimens of the 

 posterior spine on the inner border of the trochanter is suffi- 

 cient to constitute a specific distinction between these 

 examples and Wood's type from Japan, in which this spine 

 is said to be present although small. T. amurensis of Tarnani 

 (Zool. Anz. 1889, no. 301, and Horas ftoc. Ent. Ross. xxiv. 

 p. 519, pi. iii. fig. 3) is allied to these two species, coming 

 nearest apparently to sinensis ; but the depression on the 

 operculum is much wider and shallower, and the lateral 

 grooves are curved inwards round the anterior part of the 

 median elevated area. 



Typopeltis crucifer, sp. n. (PI. II. figs. 4, 4 a.) 



Nearly related to Stimpsonii, but with the surface of the 

 genital operculum marked with a deep Y-shaped median 

 groove, on each side of which there is a shallow longitudinal 

 impression parallel with its fellow of the opposite side and 

 extending behind to the posterior angle of the plate ; the 

 posterior border of the operculum widely emarginate in the 



