ANOMURAN COLLECTIONS MADE IN PORTO RICO. 
143 
Genus XYLOPAGURUS. 
Xylopag-urus rectus A. Milne-Ed wards. 
Xylopagurus rectus A. Milne-Ed wards, Bull. Mus. Comp. Zool., viii, p. 37. A. Milne-Ed wards & Bouvier, Mem. Mus. Comp. 
Zool., xiv, p. 108, pi. viii, figs. 1-13. A. Agassiz, Bull. Mus. Comp. Zool., xv, p. 40, 1888. 
The front advances gradually from the angle behind the eyes, forming a short rostral point; the 
eye-stalks are stout and a little elongated; clavate; the cornea is large and swollen. The antennse are 
small, the antennulse large; the eye scales are comb-like; the carapace is elongated, smooth, and semi- 
cylindrical. The abdomen is obliquely cut, subquadrate, and divided into four or five plates. Two 
specimens were taken at station H033 in vegetable tube's. The carapace and feet are red, of several 
shades; the ambulatory feet are lighter at the joints; the right hand is , light beneath. The chelipeds 
and ambulatory feet are elongated; the right cheliped is very much larger than the left; the upper 
margin of the palm extends over the movable finger in the form of a large tubercle. All of the legs 
are free from spines. 
Obtained at station 6063. 
Genus PAGURISTES. 
The Paguristes of the West India region, of which Paguristes depressus Stimpson is the type, are 
numerous and difficult to determine without figures; consequently the 10 species in the U. S. Fish 
Commission collection and the National Museum collections have been figured for this report. 
Key to the group of the genus Paguristes of the West Indian region, 
a. Peduncle of the antennules much longer than the eye-stalks. 
h. Rostral projection short and blunt. 
c. Peduncles of antenna longer than eye-stalks sayi 
cc. Peduncles of antenna shorter than eye-stalks lymani 
6b. Rostral projection long and slender triangulatus 
aa. Peduncles of antennules not longer than eye-stalks. 
d. Eye-stalks measured from extremity of rostral point to end of cornea longer than distance 
between antero-lateral angles. 
e. Rostral point acute. 
/. Carapace very convex : spinipes 
ff. Carapace very much flattened. 
tj. Rostrum broad at base, triangular sericeus 
<jg. Rostrum long and slender depressus 
ee. Rostral point obtuse txniatus 
dd. Eye-stalks shorter than the front. 
h. Base of the rostrum anterior to the line of the antero-lateral angles. 
i. Outline of the front almost straight. 
k. Rostrum slender from base to tip tenuirostris 
kk. Rostral projection short, rounded planatus 
ii. Outline of the front much curved at the sides. 
1. Rostrum not spiny puncticep-s 
U. Rostrum usually with one or more spines on each side grayi 
hh. Base of the rostrum posterior to line of antero-lateral angles rectifrons 
Paguristes tenuirostris, new species. Plate 4, fig. 1. 
The rostrum in this species is more slender than in any species yet examined by me; its sides 
are parallel from the base to near the acute tip. The general outline of the front is much like that 
of P. rectifrons, but the sinus behind the eyes is in advance of the line of the antero-lateral angles. 
The straight appearance of the front is heightened by the fact that the rostrum and the tips of the 
projections between the eyes and antenna are colored to correspond with the peduncles of the eyes 
and antenna, which are red, spotted with white, as in P. puncticeps, except that the color fades out 
rapidly from the middle of the eyes. The terminal segment of the antennal peduncle is armed with 
two spines. The carapace is white and very flat, and even in strong contrast with that of rectifrons. 
One male, from Grampus station 5077, in 68.5 fathoms, Gulf of Mexico, off west coast of Florida. 
