U \ IV 



Makrocylindrua Bpiniventris n. sp 



l'l ]\ I '..l 



ide the carapace, no1 including the considerably produced 



from above ii is rather oblong-oval. The oculai lobe withoul 



inien with a single large -pine, in anothei with .1 pail oi similai large spines 



■ I much forwards. Behind the oculai lobe the carapace has .1 transverse, sattle-shaped 



• ■in the sii jusl behind the oculai lobe there is a smaller, 



1 1 ii ml th rge and thick, procurved spine. The uppei margin oi pseudorostrum is anteriorly 



mch downwards, so that the end is rather obtuse, and a little behind this end a pair i>t dorsal, lai 



- and fit ><i- behind these two minute denticles, are found. Pseudorostrum has besides on the 



■ ular lobe two or three large and thick spines, and below the sattled-shaped depression and 



• ■ on backwards the lateral surface has a good number <>i somewhal small to minute denticles 



ularly dispersed; ln-hind the base of the antennae the lower margin has 4 long and robust teeth, and 



In-hind them a few minute teeth. The free tho gments smooth; third and fourth segments completely 



': without any suture between them' above and half downw ards the- sides l The abdominal segments 



inert- a si- in length from the second to the fifth, which is about as long as the sixth. First segment has below 



in tin- median line 3 very long, spiniiorm teeth rather near each other at their base but diverging strongly, 



and somewhat behind them a rather small tooth directed much backwards 111 the figure indicated as seen 



through the leg); the same segment has, besides, between the up] ce and the side 2 or [spines the 



terior on< ; nent with a pan oi robust sublateral denticles; the following segments show 



individual variation, as in one specimen they have no denticle, while in another specimen of the same 



third and fourth segments have a similar pair oi sublateral denticles, .ux] fifth segment 3 pairs of sublateral 



-terior pair robust. 



Antennu long; in the peduncle first joint ha- a Ion-, spiniform process below at the end; 



nd joint, which : beyond pseudorostrum, is a little less than twice as long a- tir-t joint and more 



- the third; the upper fiagellum scarcelj a- Ion- as second peduncular joint, 4-jointed, 



with the 3 proximal joint- subequal; lower fiagellum somewhat longer than first joint of the upper, 3-jointed, 



hut third joint \ ery short. Firsl pair of legs broken at the end i >i se< i md joint , w hich i- very rolmst 



wit! mg teeth on the lower side. The three posterior pairs of legs have a single tooth or a couple 



on the proximal pari oi the anterior or posterior margin oi second joint ; merus of third and fourth 



ited, lmt 1101 fully half a- lo in a- the three distal joint- together, and 



with a tiny rudir n exopod terminating in a -eta. this rudiment i- so -mall that on 



render it proportionately too large Uropods fig 6 d) somewhat short and 



■ • the anal door- oi the telson and ha- =, 7 spines on it- inner margin; 



ely two-fifths as long as the peduncle, with 7 spines on the distal half of its 



rl with 3 marginal spines 'third joint mutilated in m\ specimens); the 



ether of the endopod. Telson fig 6 d, and t) very long, 



