434 Journal of the Asiatic Society of Bengal. |N.S., XIX, 
Peraeopods 1 and 2.—(Fourth and fifth thoracic limbs) are 
characterised by a development of very long setae on the 
lower margin of the merus, particularly in peraeopod }. 
Peraeopods 3-5 —(Sixth to eighth thoracic limbs) with the 
second joint expanded and the lower corner of the hind margin 
free and somewhat produced in all three ; in peraeopods 4 and 
5 this joint is longer than in peraeopod 8 and slightly narrowed 
distally; hind margin of this joint finely serrate. Six pairs of 
simple pedunculate branchial lamellae attached to the third to 
the eighth thoracic limbs and in the female four pairs of incu- 
batory lamellae attached to the third to the sixth thoracic 
imbs. 
Uropod 1.—Longer than uropod 2, in natural position ex- 
tending slightly beyond the basal joint of the third uropod 
the details of the armature can be seen from fig. 4. 
Uropod 2.—In position extends to the distal end of the 
basal joint of uropod 3. 
Uropod 3.—With the inner branch one-third of the length 
of the first joint of the outer branch and in position extend- 
ing slightly beyond the apices of the lobes of the telson ; 
terminal joint of the outer branch small but distinct ; outer 
armature of the lobes of the telson in some specimens. 
ength.—10 n 
with G. pungens M.-Edw., but differs in the form of the 
postero-lateral comer of the third somite of the pleon, ‘which 
in G. pungens is more or less acutely produced, in the armature 
e 
shorter antennae and in the different shape of the basal joint 
of the fifth peraeopod, which in G. pungens is narrower and 
without a produced posterior corner. 
