114 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Genus LATREUTES Stimpson. 
Latreutes Stimpson, Proc. Acad. Nat. Sci. Phila., xii, 27 (96), 1860. 
Resembles Platybema. Rostrum elongate, more than half the length of carapace, laterally 
compressed and deep. First pair of antennae subequal in length to rostrum. Second pair with an 
acutely pointed scale. Mandibles without cutting edge or palp. Second maxillipccla seven-jointed. 
Carpus of second pair of feet triarticulate. Pleopoda biramose, branches subequal. Telson tapering 
to a point. „ 
Latreutes ensiferus (Milne Edwards). 
Hippolyte ensiferus Milne Edwards, Hist. Nat. Crust., II, 374, 1837. 
Latreutes ensiferus Stimpson, Proc. Acad. Nat. Sci. Phila., xn, 27 (96), 1860; Bate, Challenger Kept., Zoo]., xxiv, 588, pi. civ, 
f. 1, 1888. 
Body slender and but slightly sinuous at third segment of pleon. Carapace dorsally rounded, 
armed with a small median spine on gastric region. Rostrum nearly as long as carapace, vertically 
broad, of extreme tenuity, slightly curved upward on upper surface toward apex; extremity serrate, 
lower margin smooth and curved downward in middle. Antero-lateral angle of carapace serrate, with 
five to eight small spines. First pair of feet short and robust; merus and carpus each excavate to 
receive succeeding segment; the upper distal angle of carpus projects over propodus and is tipped with 
a fascicle of long hairs. The propodus articulates with carpus at lower angle and is broader at this 
extremity than at dactyloid; dactylus broad and spoon-shaped, corresponding in length with pollex. 
Second pair of feet longer than first, slender, feeble; carpus triarticulate, central segment the longest, 
and together the three are longer than propodus, of which the fingers are nearly half the length. 
Third, fourth, and fifth pairs with long spines on under side of propodi, and a series of small spines on 
dactyli, which are biunguiculate. 
Dimensions of female: Length, 15.5 mm.; length of carapace and rostrum, 6.3mm.; length of 
rostrum, 3 mm. 
Mayaguez; Boqueron Bay. Common in floating Gulf weed in the North Atlantic. 
Genus TOZETJITA Stimpson. 
Tozeuma Stimpson, Proc. Acad. Nat. Sci. Phila., xii, 26 (95), 1860. I 
Body greatly elongate, lanceolate, diminishing at both ends, compressed. Rostrum slender, very 
long, sometimes scarcely shorter than rest of body. Antennulae short, biflagellate. Antennal scale 
long. Mandibles rather stout, strongly incurved, not divided nor palpigerous. External maxillipeds 
very short, without exognath or flagellum. Feet short, without epipods; first pair very short, stout, 
chelate; second pair filiform, chelate, carpus triarticulate. Abdomen armed with teeth on dorsum; 
last article elongate, almost lanceolate. 
Tozeuma carolinense Kingsley. 
Tozeuma carolinensis Kingsley, Proc. Acad. Nat. Sci. Phila., xxx, 1878, 90 (2); Proc. Acad. Nat. Sci. Phila., xxxi, 1879, 413, 
pi. XIV, f. 8 (1880). 
Rostrum a little more than half the length of remainder of body, rounded and unarmed above, at 
base somewhat flattened and horizontal, distally inclined slightly upward; below serrated, and toward 
the base lamellate, the teeth becoming more distant toward extremity. A spine on either side at base 
of rostrum; a second at antero-lateral angle. Outer flagellum of antennulse thick and much shorter 
than inner. Antennae longer than rostrum; scale lanceolate, equaling or exceeding antennulse, but 
less than half the length of rostrum. Abdomen strongly geniculated on posterior part of third segment, 
where there is a somewhat truncated protuberance, more prominent in the male than in female. Pos- 
terior margin of fifth segment with a spine on each side; of sixth segment with a lateral spine above 
telson and a postero-lateral spine. Telson with two pairs of dorsal spinules, posterior margin with two 
long submedian spinules, and one short spinule on each side. 
Dimensions of female: Length, 40 mm.; length of carapace and rostrum, 20.5 mm.; length of 
rostrum, 13.7 mm. 
