ae PROCEEDINGS OF THE NATIONAL MUSEUM. 2 
Left cheliped with merus compressed. Carpus compressed, bicristate. 
Hand narrow and slender. Ambulatory legs stout. Dactyls curved 
and slightly twisted. 
This speciesis much nearer its Atlantic representative pubescens than 
is any other North Pacific Hupagurus to its Atlantic analogue, and has 
long been confounded with it. The two are however distinct, and can 
be separated by careful comparison. Capillatus has the appearance of 
being much more hairy, the hairs often holding mud and dirt. Under 
the microscope, the main shaft of each hair is crowded with long fine 
hairs. In pubescens, the hairs show occasional spinules along the main 
shaft. The oblique face of the left hand in capillatus is more angular 
at its base and is not quite so long in proportion to its width as in 
pubescens. The large hand is more rounded. The spines are larger and 
not so numerous. The propodal joints are a little more flattened and a 
little shorter. The eyes are a trifle longer. 
Alaska. 
Eupagurus brandati. 
Median projection of the front very little produced beyond the lateral. 
Lateral projections rounded and armed with a submarginal spine. Eye- 
stalks rather stout, a little dilated at the cornex. Scales triangular, 
bearing a bunch of coarse bristles. The acicle of the antenna extends 
a little beyond the eye. 
The chelipeds are stout. Carpus armed above with small scattered 
spines. Hand very much swollen; outer margin arcuate; inner mar- 
gin of palm and finger making nearly a straight line. Prehensile edges 
of fingers armed with three or four stout tubercles; tips horny. 
Left cheliped small. Carpus compressed, bicristate. The oblique 
triangular face of the hand is markedly concave. 
Ambulatory legs moderately slender, almost entirely unarmed. The 
dactyls are wide, curved, and slightly twisted. 
The color of alcoholic specimens is reddish, the middle of the joints 
light. Spines everywhere red or red pointed. 
This species is closely related to kréyeri, trigonocheirus and dalli. 
The small chelipeds of all have the triangular outer face, and in gen- 
eral the species resemble each other very much. With a large series 
of all I find substantial specific characters. Brandti and dalli are found 
together in a depth of from 15 to 85 fathoms in the Aleutian Island 
region. They grow to a length of three inches. They are separated at 
sight by a sharply defined band of white on the distal end of the merus 
joints of dalli, which is entirely wanting in brandti. 
Eupagurus dalli. 
Anterior portion of carapace very convex, about as broad as long. 
Median projection of the front triangular, produced beyond the lateral 
projections. Lateral projections rounded, each armed with a submar- 
