HEMISIRIELLA ABBREVIATA. 195 
Distribution.— S. aequiremis was established on specimens from the Indian 
Archipelago, where it was taken at ten places; furthermore it is known from 
the Arabian Sea, the Bay of Bengal, the Indian Ocean Lat at. 3° 9’ N., long. 
84° 44’ E., and the China Sea (the author). 
HEMISIRIELLA H. J. Hansen (1910). 
14. Hemisiriella abbreviata, sp. nov. 
Plate 2, figs. 2a-2c. 
Butaritari, Gilbert Islands. Jan. 6, 1900. Lagoon. Surface. Light. 1 female with young. ‘“Al- 
batross.” 
Description. Slender.— Carapace extremely short, leaving along the 
middle line nearly more than three segments uncovered; the frontal plate (fig. 2a) 
somewhat feebly produced, constituting a low triangle with the vertex acute. 
Eyes moderately large, very light brownish; the stalks somewhat broader than 
long and broader than the retina. The antennulae with the third peduncular 
joint distinctly less than twice as long as broad. The antennal squama short, 
about two and a half times as long as broad, with the terminal lobe beyond the 
base of the marginal tooth twice as broad as long. 
Uropods (fig. 2b) with the endopod not overreaching the exopod, with five 
marginal spines occupying only about one fifth of the outer margin of the proxi- 
mal joint of the exopod, and the distal joint somewhat less than twice as long as 
‘broad. Telson (figs. 2b and 2c) proportionately short, not reaching the articu- 
lation of the exopod, distinctly less than twice as long as broad, with two pairs 
of spines at the end of the broad proximal part, while its longer distal part is 
linguiform, with the proximal third of its lateral margins conspicuo usly concave 
and the end broadly rounded; the lateral margins of a little less than the distal 
half of the telson only with 4-5 spines irregular as to size and intervals, while 
the terminal margin has three extremely small spines in the interval between 
three pairs of long spines, the inner pair of which are slightly shorter than 
the most lateral pair, while the intermediate pair are considerably longer 
than the others; terminal feathered setae not observed. 
Length of the single adult female 5.5 mm. 
This species is allied to H. pulchra H. J. H., but is smaller 
Remarks. 
with the eyes larger, the third joint of the antennular peduncle shorter in pro- 
portion to breadth, and the telson broader with a small number of lateral spines 
and three pairs of long terminal spines. Though the elongate endopod of the 
