894 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Axius spinosisslmus, sp. nov. 
Differs from the preceding, A. pailoloensis, as follows: 
There is a row of spines along the posterior border of the cervical suture; three spines each side 
of rostrum; the five gastric carinse extend the full length of that 
region and bear numerous spines. In addition there are a hepatic 
spine and an antennal spine. 
Abdomen marked with short longitudinal impressed lines. 
Instead of minute spinules there are four spines on middle of telson. 
Eyes longer, reaching nearly to end of rostrum. 
Lower margin of maxillipeds and thoracic legs more spinose. 
Besides a series of long spines on ischium and merus of maxilliped, 
there is a spine on the carpus. 
Only the left of the first pair of chelipeds is present. It is very 
slender, only twice as wide as those of second pair; distal half 
pubescent; margins spinous, except of fingers and lower edge of 
wrist; palm and fingers subequal in length, palm more than twice 
as long as wide; fingers denticulate, not gaping. 
Lower margin of ischium and merus of second to fifth pairs of feet 
spinous; third to fifth pairs very slender. A spine on lower surface of coxal joint of first to fourth pairs. 
Dimensions . — Length of carapace 7.5, of abdomen 11 mm. 
One specimen from south coast of Molokai Island, 23 to 24 fathoms, station 3847 ''Cat. No. 30534). 
Axius rudis, sp. nov. 
A much less spiny species than the two preceding. The carapace granulate but nearly naked. 
Rostrum very slender, reaching to end of first antennular segment, armed with three or four spines 
and spinules on each side, diminishing anteriorly, basal spine 
large. 
Five dorsal carinse, median unarmed, submedian three- 
spined, outer carina, a continuation of outer margin of rostrum, 
unarmed. Median carina longest, outer carina reaching only 
to middle of gastric region. 
First abdominal pleuron narrow, falcate; second to fifth 
truncate; sixth bluntly angular, with a spinule at the angle, 
which is obsolete in the large specimen; four dorsal spines on 
telson; lateral margins spinulous. 
Eye half as long as rostrum, cornea large, hemispherical, 
oblique. Second and third segments of antennae equal, flagella 
subequal and as long as the carapace and first three abdominal 
somites. Scaphocerite rather short, reaching only about one- 
third length of penult segment of antennal stalk; stylocerite 
reaching nearly to end of that segment, which is twice as long 
as last segment; flagellum twice as long as body. 
First pair of chelipeds unequal, resembling much those of FlG - 6L— Axius rudis, type, a, Left cheliped, 
_. . . i T i • , , , X 3 b, Anterior portion, x 4f. c, Tail- 
Eiconaxms coronatus I ry bom. « Ischium and merus of larger fan x 4 „ 
one spined on lower margin, merus with three spines on distal 
half of upper margin; carpus cup-shaped, no longer than high; palm about one and a half times as 
long as high, narrowed a little at proximal end, a denticulated marginal line above, ending in a slender 
spine; a similar line on part of lower margin continued on the pollex; outer and inner surfaces covered 
except near the wrist with scaly granules, on a background of very minute granules visible only with a 
strong lens. Fingers two-thirds as long as palm, sparingly toothed, a large tooth near base of dactylus; 
gaping, hairy, tips crossing. 
Smaller cheliped similar, but much narrower and a little shorter than the larger. 
Second pair of legs with long spines on lower margin of merus. 
“Ark. f. Zool., Stockholm, I, 1904, 384, pi. xx, figs. 7-10. 
Fib. 50 . — Axius spinosissimus, type. 
(a) Left cheliped, x 4. 6, Anterior 
portion, x 5f. 
