282 Transactions.— Zoology. 
angular, imbricated, each bearing a cluster of three or four slender spines 
on the inner edge, and two or three smaller ones on the outer angle, not 
forming regular rows. Ventral plates densely covered with minute rough 
spines, each having also a central series of sharp spines, the inner ones very 
small, increasing ontwardly to the external, marginal ones, which are 
strong, sharp, and slightly curved upward, + inch long. The lower mar- 
ginal plates are opposite the upper, and project considerably beyond them. 
The latter are elevated and narrow, twenty-eight on each side of a ray, the 
two at the angle between the rays much higher and larger, covered like the 
rest with rough rounded granules, and each surmounted by a stout, blunt 
tubercle. All the others, except the next two, bear a similar, much smaller 
tubercle, decreasing regularly in size to the end of the ray. The two next 
the basal one of each ray are thinner than the rest, and without a tubercle. 
Paxille largest along the centre of the rays, presenting a crowded even 
surface. 
Length of ray from centre 2:6 inches, radius of disc *6, width of ray at 
base -7, of median space :4. 
Auckland, New Zealand.—H. Epwanps. 
OPpHIARACHNA MACULATA, Verrill.* 
A large yellowish brown species, with stout arms, finely spotted with 
darker on the upper surface. 
Radius of disk to that of arms as 1 : 9 or 10. 
Disk large and thick, the inter-radial regions swollen and a smaller lobe 
bordering each side of the arms at base; upper surface and inter-radial 
spaces below covered throughout with small, closely crowded, rounded, or 
slightly polygonal granules; radial shields not visible; at the base of each 
arm a few naked, imbricated, unequal scales. Mouth-shields broad cordate, 
broader than long, the inner end obtusely rounded, the sides slightly in- 
curved, the broad outer end emarginate. The accessory plates outside the 
mouth-shields either two and nearly equal, or three and unequal, in the 
same specimen ; when there are two they form together a narrow, slightly 
oblong ellipse, much narrower than the mouth-shields; when there are 
three, the middle one has a broad, rounded triangular form, and the two 
lateral pieces are small, unequal, and irregular in size and form. Mouth- 
papille seven or eight on each side of the mouth, the inner one elongated, 
irregularly oval, somewhat pointed ; the next much larger than the others, 
broader than long, somewhat quadrilateral and irregular, the outer edge 
narrower and flattened ; the third a little longer than the first, irregular in 
form, somewhat pointed at each end; the three or four following are a little 
smaller, and about equal in size and similar in form, rather oblong, some- 
From the Pro. Boston Soc. of Nat. Hist., Vol. XIL, April 7th, 1869, p. 388. 
