115 
Eyes normal (not lamellar), large, on tolerably long and thin 
peduncles. Scale of second antenna very short, subulate 
(not laminar),shorter than the penultimate joint of the peduncle. 
The second and third maxillipeds and five following pairs of 
limbs nearly alike, beset with strong sete. Sixth joint tri- 
articulate, finger well developed. First maxillipeds without 
exopod. Pleopods in the female rudimentary, in the male 
all five well developed. Telson small, ovoid, truncate at the 
end. Inner branch of the uropods shorter than the outer. 
Auditory organ well developed. 
By the reduction of the antennal scale, Ortmann considers 
that his genus approaches Anchialus, Kroyer, and Arach- 
nomysis, Chun, the former having the scale laminar, the 
eyes on short stalks, and the telson apically furcate, whereas 
in Caesaromysis, the scale is subulate, the eyes are on long 
stalks, and the telson is truncate. 
Caesaromysis hispida, Ortmann. 
1893. Caesaromysis hispida, Ortmann, Decap. und Schizop. 
Plankton=Exp., p::24,2Pl, 1, ties. 3. .6a.- b,c, dy e, 
fi Ceple aes 
A single specimen, male, of this remarkable species fully 
agrees with the description and figures supplied by Dr. Ortmann, 
except that the four-spined apex of the telson is less decidedly 
truncate, and from the base of each of the last pair of legs 
there is ventrally an obtuse process, about thrice as long as 
broad, directed backwards, which is not mentioned by Ortmann. 
The numerous long spines lateral to the rostrum and dorsal 
on carapace and pleon give the creature a larval appearance. 
The large swollen eyes, set at right angles to the slender 
peduncles, with the larger corneal group looking straight 
forward, and another smaller and quite separate group facing 
outward on either side, produce a remarkable effect. It is 
not without a parallel in the young of Euphausiidae, but 
is perhaps even more closely comparable with the eyes in the 
Amphipod Phronmma. The animal, as preserved, is pellucid 
except in regard to the eyes. The length, from apex of rostrum 
to apex of telson, is 6.5mm. The largest malJe in Ortmann’s 
collection was 9 mm. long. 
Locality —Lion’s Head, S. 72° E., 47 miles. Depth, 190 
fathoms. Bottom, green sand and black specks. Taken by 
townet on beam of trawl. 
