BRAOHYURA AND MACRURA OF HAWAIIAN ISLANDS. 
929 
Rostrum nearly half as long as carapace, reaching beyond middle of second antennular segment; 
upper margin straight, armed with seventeen close-set spines above, of which only two are behind the 
orbit, the crest not being prolonged farther back, and five minute spinules below, this margin appear- 
ing unarmed to the naked eye; tip acuminate. 
Eyes much flattened, as in P. platyophthalmus, Alcock and Anderson, showing only a narrow 
crescent of light-colored pigment. 
The antennular scale overlaps a little the second segment, which is three times as long as the 
third; the peduncle reaches somewhat beyond middle of antennal scale; the antennal peduncle falls 
very little short of the antennular. 
Outer maxilliped reaching to end of acicle. The only trunk-leg remaining is one of the third pair, 
and reaches to middle of acicle and has a falcate dactylus which is the same length as the propodus 
and more than twice as long as carpus. 
The abdomen is too mutilated to show any distinctive character; none of the pleopods are perfect. 
Length of rostrum 5.8, of carapace 11.5 
mm. 
Differs from other species in longer and 
more slender rostrum, longer second joint of 
antennula. 
Cat. No. of type, 30560. 
Leptochela robusta Stimpson. 
Leptochela robusta Stimpson, Proc. Acad. 
Nat. Sci. Phila. , XII, 1860, 112 [43]. 
Bate, Challenger Macrura, 862, pi. 
cxxxix, figs. 3 and 4, 1888. 
Distribution.— South coast of Oahu Island, 
surface, stations 3812 and 3921 ; south coast of 
Molokai Island, surface, station 3829. 
These specimens average 13 mm. in length. Rostrum very slender, shorter than eyes. Longer 
antennular flagellum longer than carapace. Fifth abdominal segment very bluntly and obscurely 
carinate; sixth segment with a median tubercle at proximal end, which, however, is hidden under the 
preceding segment when the abdomen is horizontally extended. The three pairs of dorsal spines on 
the telson very remote from one another, one pair at middle, one very near distal end and the other 
very near proximal end. 
BIBLIOGRAPHY. 
List pf the principal works concerning Brachvura and Macrura at the Hawaiian Islands. 
1825. Quoy and Gaimard. Voyage autour du Monde, Entrepris par Ordre du Roi, .... Execute 
sur les corvettes de S. M. I’Uranie et la Physicienne, pendant les annees 1817, 1818, 1819, et 
1820; .... par M. Louis de Freycinet, .... Zoologie, par MM. Quoy et Gaimard, Mede- 
cins de l’Expedition. Paris. 1824 (date on title-page). (According to Bibliographie Fran- 
chise, pp. 513-552, which include the Crustacea, were published Aug. 6, 1825. ) One vol., 4to, 
and atlas folio of 96 plates, also bearing date 1824. 
1839. Owen, Richard. Crustacea, in The Zoology of Captain Beechey’s Voyage; compiled from the 
collections and notes made by Captain Beechey, the officers and naturalist of the Expedition 
during a voyage to the Pacific and Behring’s Straits performed in His Majesty’s ship Blossom, 
under the command of Captain F. W. Beechey, R. N., F. R. S., &c., in the years 1825, 26, 27, 
and 28. London: 1839. Pp-. 77-92, pis. xxiv-xxviii. 
1840. Randall, J. W. Catalogue of the Crustacea brought by Thomas Nuttall and J. K. Townsend, 
from the west coast of North America and the Sandwich Islands, with descriptions of such 
species as are apparently new, among which are included several species of different localities, 
previously existing in the collection of the Academy. < Jour. Acad. Nat. Sci. Phila., VIII, 
pp. 106-147, 1839. (Published in 1840. ) 
Fig. 79 . — Psathyrocaris hawaiiensis, type, a, Rostrum, x 4. i>, 
Carapace and antennal region, x Ij. e, Outer maxilliped, 
x 4. d, Third foot, x 4. 
