206 BULLETIN OF THE 
Station 3393. 1020 fathoms. 8 specimens. 
6 B805;.) «Folens 3 sf 
fe o40G6.c8 400» arc 1 os 
Mh SAO Tal BBC, byt 14 ~ (1 bopyrized). 
St O41 Say OOONN cs 4 
73 ? ? 24 fe 
Family MIERSIIDZ. 
Acanthephyra cristata, sp. nov. 
Differs from A. debilis A. M. Edw. (= A. gracilis Smith) in having a much 
shorter and fewer-spined rostrum, two pairs of longitudinal lateral carine on 
the carapace, a dorsal carina on the fourth abdominal segment, and by the ab- 
sence of aseries of denticles on the posterior margin of the dorsum of the fourth 
and fifth abdominal segments. 
From A. lanceolata (Systellaspis lanceolata Bate) it also differs by having the 
rostrum shorter, the lateral and dorsal carinee of the carapace more prominent, 
and by the absence of a prominent tooth on the anterior margin of the first 
abdominal segment. 
This species, like A. debilis and A. lanceolata, has no carina on the dorsal 
surface of the fifth and sixth abdominal segments. 
Length, 78 mm.; rostrum, 13 mm.; carapace, including rostrum, 27.5 mm. 
Station 3361. 1471 fathoms. 1 specimen. 
f saele Lae ve 1 ee 
Acanthephyra cucullata, sp. nov. 
The integument is soft, membranaceous, and transparent in alcohol. The 
carapace is carinated in the median dorsal line anteriorly ; this carina is fur- 
nished with seven minute teeth, and is continued forward to a very small 
acicular rostrum, which hardly reaches forward to the end of the eyes; the 
infero-lateral margins of the orbit are continued downward for some distance 
nearly parallel with one another in a nearly vertical direction, and then sud- 
denly diverge and trend backward, forming the upper wall of the orbit; a sort 
of hood is thus formed of the anterior part of the carapace, overhanging the 
facial region. The infra-orbital angle is rounded, not spiniferous. The an- 
tennal spine is acute, and advanced forward of the infra-orbital angle. The 
branchiostegian spine is small and continuous with a longitudinal carina that 
runs along the branchial region of the carapace. A low fold or ridge marks 
the upper boundary of the branchial region. 
The abdomen is carinated in the median dorsal line on the second to the 
sixth segment inclusive ; the carina is most prominent on the third segment, 
