» PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 53 
of its epimera are excavated to fit accurately the outer edges of the 
bases of the uropods, and are margined with a narrow carina. 
The telson is approximately two-thirds as long as broad, narrowed 
posteriorly, with the posterior angles rounded and the posterior edge 
slightly emarginate in the middle. The telson is stiffened by eight 
distinct calcified plates; a broad median basal plate, with a small one 
either side at the base of the uropod and a small median one behind it 
and between a pair of broad lateral plates, still behind which there is a 
second pair which meet in the middle line and form the tips and lateral 
angles. 
The lamellz of the uropods are about as long as the telson, a little 
longer than wide, the inner slightly longer than the outer, and each 
widest near the extremity, which is broadly rounded in outline, while 
the outer edge is nearly straight. 
In the male the first and second pairs of abdominal appendages are 
well developed and of nearly the same form as in the species of Munida. 
Those of the first pair are about as long as the protopods of the second 
pair, with the protopod somewhat triquetral and naked except a few 
setz along the distal part of the inner edge, and with the single ter- 
minal lamella slightly shorter than the protopod but much broader, very 
thin, margined with sete distally and along the outer edge, and the 
edges rolled together on the anterior side. In the second pair the pro- 
topod is slender and naked, and bears a narrow, lanceolate lamella a 
little shorter than the protopod and clothed with numerous sete along 
both edges and on the proximal part of the anterior side, and at its 
base a minute second lamella much narrower than the other, scarcely 
as broad as long, and naked. The appendages of the third, fourth, and 
fifth somites are rudimentary, very minute, and almost wholly naked; 
they are scarcely an eighth as long as the appendages of the second 
somite, very slender, and with a single terminal lamella smaller than 
the protopod. Inthe female there are no appendages upon the first 
somite of the abdomen, and the appendages of the second somite are 
very minute, slender, and tipped with a few small sete. The append- 
ages of the third, fourth, and fifth somites are well developed, unira- 
mous, and ovigerous; they increase in size successively from the third to 
the fifth, and each appendage is composed of a slender protopod and a 
shorter terminal portion composed of two segments of which the termi- 
nal is the longer. 
‘ The eggs in the alcoholic specimens are approximately spherical, 
1.50" to 1.75" in diameter, and very few in number, the two largest 
egg-bearing specimens carrying less than thirty eggs each, while the ° 
three smaller specimens carry nine, three, and two each, though a very 
few eggs may have been lost from these last specimens. 
