894 PROCEEDINGS OF THE NATIONAL MimEUM. vouxxiv. 
SPIRONTOCARIS TRUNCATA. 
Allied to S. spina. Carapace armed with 4 median spines; rostrum 
subtriiingular, widest at the extremity, about three-fifths as long as 
carapace, midrib curving upward, upper margin with 1 spine at its 
middle, extremity with 7 spines, 2 above and 4 below the midrib. 
Sui)raorbital spines 2, equal, large, 1 behind, not above the other, 
distant. 
Diiiiensions. — Length of male 14 mm. 
Tijpe locality. — Heceta Bank, Oregon, 50 fathoms, station 2886, 
U. S. Fish Commission steamer Albatross (Cat. No. 25259). 
SPIRONTOCARIS SNYDERI. 
Near S. hisjmiosa Holmes. Median spines of carapace 3 or 4, sep- 
arated from the rostral teeth, which are 5 or 6 on the upper margin 
and 3 or 4 on the lower. Rostrum shorter than carapace, much the 
shape of that of S. hisjnnma., excepting that the midrib is more rapidly 
ascending and ends in a short point, the upper lamina is shallower and 
of rather even depth. Antennal peduncle reaches only about one- 
third length of scale. Dactyli of third, fourth, and fifth pairs of feet 
a third or less than a third as long as their propodi. 
Dimensions. — Ovigerous female, approximate length, 28 mm.; 
length of carapace and rostrum, 9.4 mm.; of rostrum, 4.4 mm. 
Type locality. — Montere}^ Bay, California, J. O. Snyder, collector 
(Cat. No. 25260). 
Distribution. — From Puget Sound to Lower California. 
SPIRONTOCARIS SICA. 
Near S. bispinosa Holmes. The posterior tooth of the carapace is 
considerably in front of the middle. Rostrum shorter than in 8. 
bispinosa, both upper and lower lamiiue narrower and extending nearer 
the tip. Second segment of antennular peduncle three times as long 
as third segment. Outer maxillipeds reach beyond antennal scale. 
Thoracic feet longer and slenderer than in S. bispinosa., the first pair 
overreaching the antennular peduncle. The maxilliped and the first 
foot only are provided with an epipod. 
Dimensions. — Female, length 58 mm., length of carapace and ros- 
trum 24.8 mm., of rostrum 12.8 mm. 
Tyj^e locality. — Santa Barbara Channel, 265 fathoms, station 3200, 
U. S. Fish Commission steamer Albatross (Cat. No. 25261). 
Distribution. — Found only on the coast of California, 211 to 464 
fathoms. 
SPIRONTOCARIS DALLI. 
Allied to S. ocliote^isis (Brandt). Rostrum longer, reaching nearly 
to end of antennal scale, midrib straighter, less sinuous, terminating 
