192 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



forming articular surface for second segment. Second segment about 

 1.3 times length of first, inner proximal surface with small but distinct 

 concavity forming ball-and-socket type joint with articular surface of 

 first segment. Second segment with sharp taper in middle, with 

 short membrane stretched along inner surface in region of taper. 

 Distal surface with two elongate, spinelike processes, inner almost 

 two times length of outer, rimmed on both margins with fine mem- 

 brane; outer spine rimmed on outer margin with frilled membrane 



(fig. 130. 



Maxilliped of female two-segmented, located just posterior and 

 medial to maxilla. First segment strongly developed, ellipsoid, with 

 short projection of proximal surface forming articular surface. Distal 

 margin of first segment irregular, outer portion projecting above 

 inner; distal half of inner lateral surface with distinct depression. 

 Second segment short, with strongly curved, acuminate terminal 

 process and small, flat, lobate accessory structure. Shiino (1954) 

 reports the presence of a spinule on anterior side of second segment, 

 but this spinule was not found on the female specimens examined 

 by the present author. Division between second segment and 

 terminal process indistinct; accessory process arising from distal end 

 of second segment, at base of terminal process. Inner surface of 

 terminal process flat, with minute denticulations on distal portion 

 (fig. 13n). 



Maxilliped of male similar to that of female except articular pro- 

 jection of proximal end of flrst segment more distinct, with addi- 

 tional small protrusion of inner proximal margin. Second segment 

 and processes as in female (fig. 13m). 



First thoracic leg biramous. Endopodite reduced to lobate, rudi- 

 mentary process with distal end divided into three parts. Endopo- 

 dite rudiment projecting from junction of protopodite and exopodite. 

 Protopodite one-segmented, irregular in outline, proximal margin 

 more heavily chitinized than rest of segment, with plumose setule 

 present on inner distal lateral surface and plumose seta on outer 

 distal surface. Exopodite two-segmented; first segment slightly 

 longer than second, with spinule and round articular knob on outer 

 distal corner. Spinule not mentioned by Shiino (1954) but present 

 on both male and female specimens. Second segment of exopodite 

 palm-shaped with three spines and plumose seta on distal surface. 

 Outermost spine simple, serrate on inner margin only. Inner two 

 spines broadly flattened, deeply serrate, serrations appearing as 

 overlapping, spinelilve extensions of terminal spine (fig. 14a). 



Second thoracic leg biramous. Protopodite two-segmented; first 

 segment short, second segment approximately two times length of 

 first, width of second segment slightly less than length. Exopodite 



