22 
PACIFIC SCIENCE, VoL VII, January, 1953 
Inner flagellum 4.1 mm. long; outer flagellum 
3.7 mm. long, with base thickened for 0.30 
mm. and produced as secondary lobe 0.35 
mm. long. 
Lateral margin of basicerite of antennal pe- 
duncle with broad, acute tooth extending to 
middle of first article of antennular peduncle. 
Scaphocerite reaching to end of antennular 
peduncle, almost 0.5 as broad as long, with 
setae around rounded distal and inner mar- 
gins; lateral spine poorly developed, shorter 
than squamous portion. Carpocerite not reach- 
ing to end of the scaphocerite. Antennal fla- 
gellum 8.0 mm. long. 
Basal article of endopod of third maxilliped 
(ischio-merus) 1.5 mm. long, with basal 0.7 
flattened and curved (not shown in aspect 
drawn), straight and subcylindrical distally. 
Carpus 0.46 mm. long, cylindrical. Third arti- 
cle (propodo-dactylus) 0.7 mm. long, circular 
in cross section, tapering; with 8 transverse 
rows of spinules. 
Chelipeds well developed, 7.5 mm. long, 
quite symmetrical, usually carried partially or 
completely folded back on merus. Ischium 
short, delimited from merus by slight groove. 
Merus 2.9 mm. long, 0.45 mm. broad; con- 
vex-concave distally in cross section, concav- 
ity accommodating chela; edges of concavity 
produced as low ridges distally, outer ridge 
obsolete proximally, inner ridge distinct to 
base. Merus without spines or setae, inferior 
internal margin produced as small tooth. Car- 
pus conical, 0.7 mm. in length and distal 
breadth, unarmed. Upon flexion of both car- 
pal articulations chela rests against merus. 
Propodus 3.6 mm. long, fingers 1.3 mm. Palm 
somewhat flattened, curved, without keels or 
sharp angles, 1.0 mm. -high. Maximum width 
of fixed finger 0.3 mm. ; dactylus slightly thin- 
ner (0.25 mm.). Proximal 0.75 of fixed finger 
of right chela with 11 large flattened triangu- 
lar teeth, larger distally. These alternate with 
corresponding smaller teeth on dactylus. Dac- 
tylus of left chela with knife-like crest show- 
ing minor irregularities homologous to teeth 
of right dactylus. Distal 0.25 of fixed finger of 
both chelae with ridge, armed with fine serra- 
tions, apposable to bare spot on dactylus 
opposite; both fingers taper to unarmed, 
curved, acute tip that crosses opposite mem- 
ber. Palmar and digital adhesive plaques poor- 
ly developed. 
Second legs 4.3 mm. long. Articles of car- 
pus with ratio 10 : 2 : 2 : 2 : 4. Propodus al- 
most twice as long as last article of carpus, 
fingers 0.5 of length. 
Third legs with ischium 0.8 mm. long; 
merus, 1.6 mm. long, 0.35 mm. broad; carpus, 
0.7 mm. long, 0.2 mm. broad; propodus, 1.3 
mm. long, 0.2 mm. broad; dactylus, 0.35 mm. 
long, 0.06 mm. broad. Ischium unarmed; me- 
rus with strong movable spine on middle of 
inferior margin, usually pressed against the 
article; carpus with single small movable spine 
at articulation of propodus; propodus with 4 
spines, 3 proximal less than 0.5 width of pro- 
podus, fourth 0.7 width of adjacent propodus. 
Dactylus with uniform taper to acute tip, 
slightly curved. 
Fourth leg similar to third. Fifth leg with 
armature of propodus reduced to 2 short 
spines, usual "brush” on distal portion of ar- 
ticle reduced to 4 small bunches, not rows, of 
bristles, each composed of at most 6 or 7 in- 
dividual bristles. 
Anterior 5 abdominal pleura rourided. 
Pleura of sixth abdominal segment acute, tri- 
angular, with margins slightly convex, 0.42 
mm. long, 0.32 mm. broad at base. Uropods 
of normal form, broad, rounded. 
Telson convex dorsally, concave ventrally; 
sides straight with marked taper. Proportions 
as follows: Total length, 1.80 mm.; width at 
base, 0.74 mm.; width at tip, 0.32 mm.; thick- 
ness at base, 0.42 mm.; width of base of ter- 
minal triangle, 0.14 mm.; length (or height) 
of terminal triangle, 0.14 mm.; anterior pair of 
dorsal spines 0.98 mm. from base; posterior 
pair of dorsal spines 1.40 mm. from iDase; an- 
terior pair of dorsal spines 0.10 mm. long; 
posterior pair of dorsal spines 0.14 mm. long; 
lateral terminal spines 0.09 mm. long; medial 
pair of terminal spines 0.50 mm. long. Tip of 
