va Y,] PROCHEDINGS OF THE NATIONAL MUSEUM. 247 
Pericera atlantica, sp. noy. 
Pericera, sp.. Smith, Rept. U. 8. Commiir. of Fisheries for 1885 (1887), p. 627: 
Carapace oblong-ovate; Spines of the dorsal surface and margin in 
number and position corresponding to those of triangulata; but the 
spines are shorter and weaker, the two dorsal branchial spines are ar- 
ranged more longitudinally, and there is no tubercle on the hepatic 
region and none on the branchial region above the margin. Width of 
front greater than in triangulata. In addition to the close pubescence 
of the surface, the carapace is covered with long curved hairs. Color 
in aleohol very light, while triangulata is a reddish brown. In other 
respects this species agrees with triangulata, of which it appears to be 
the Atlantic analogue. It resembles in form specimens of P. cornuta 
of equal size, but the series of dorsal spines, the wider orbital fissures 
and shorter rostrum separate it from that species. 
Entire length, 17; width, including second-lateral spines, 12.3; width 
without spines, 10.3; width between tips of postocular spines, 9 milli- 
meters. ; 
The above description is made from a young female collected off Key 
West, Florida, lat. 24° 25’ 45” N., long. 81° 46’ W., 45 fath., coral, tem- 
perature 75°, station 2318, by the U. S. Fish Commission in 1885 
(15142). A smaller female was collected in lat. 35° 10/ 40” N., long. 75° 
06/10” W., 68 fath., gray mud, temperature 71.5°, station 2268, 1854 
(7220). 
Two very small specimens from the Gulf of Mexico, lat. 29° 27' 30” 
N., long. 87° 48’ 30” W., 30 fath., coarse sand, black specks, shells, sta- 
tion 2390, U. S. Fish Commission, 1885 (16044) have been doubtfully 
referred to this species. They have the form and orbits of atlantica, 
but are too small for exact determination. 
Pericera contigua, sp. nov. 
Plate xxx, fig. 2. 
Carapace oblong-ovate, narrower at the orbits than posteriorly; pu- 
bescent; armed with three lateral spines: one on the hepatic, one a little 
above the margin at the postero-lateral angle of the carapace, and the 
other, the longest, situated halfway between the two. 
Protuberances of the dorsal surface arranged as follows: Three spiny 
tubercles in a triangle on the gastric, the posterior one on the median 
line most prominent. On each branchial region a spine in a transverse 
line with the posterior border of the gastric; another spine midway 
between this and the lateral epibranchial spine; a spiny tubercle close 
to the posterior-lateral border of the cardiac region; behind the last a 
rounded tubercle near the posterior margin; and a spiny tubercle on 
the anterior portion. On the intestinal region, a spiny tubercle, and 
