Records of the Indian Museum. [VOEs, 
Gennadas praecox, sp. nov. 
(Plate xiii, figs. I—4.) 
St. 320.—Off C. Comorin, 7° 23’ N., 75° 44’ E., 1,053 fathoms. 
One male, 32} mm. 
The rostral crest is much the same as in the two preceding 
species, but the dorsal spine is more slender. The antennary and 
infra-antennary angles are acute, but rather bluntly rounded at the 
apex ; the branchiostegal spine is minute. The cervical and post- 
cervical grooves of the carapace are deeply cut; they approach one 
another very closely in the mid-dorsal line, where the distance 
between them is scarcely one-sixth the distance from the post- 
cervical groove to the hinder margin. ‘The mid-dorsal carina runs 
the whole length of the carapace, but is inconspicuous posteriorly. 
The second joint of the antennular peduncle, measured dor- 
sally, is about two-thirds the length of the ultimate segment. The 
antennal scale (fig. I) is three and a quarter times as long as 
broad; it is widest basally and its outer edge, which is nearly 
straight, terminates in a small spine which falls far short of the 
narrow apex of the lamellar portion. 
The ultimate joint of the mandibular palp is about as long as 
th~ oreatest width of the penultimate joint. 
; In the second max- 
illa (fig. TTS an 
icted behina witetior lobe of the internal lacinia is strongly con- 
al similarly-constricted lous. trifle narrower than the adjacent 
an ‘ : 7 and a tus : pel ea aa 
lacinia the anterior lobe 1s fully ae cndopod of the fitst‘ntax 
the posterior. The third joint 0 
is @X- 
cond; the fourth 1s 
ili i twice the length of the Set". the inner 
rage : vey fe stiff acd spines are situated on 
tremely min : 
; soint. . t the same 
distal margin a ce the first pair of peracopods is aon In the 
aes he chela and is two-thirds as long ier of the carpus and 
ee i the chela is three-quarters Bee cara of the third 
second p alm. e€ : , 
ter than the p is only a 
ae et in length to the merus thence’ 
pair is 
an 
little more than half the length of the carpus 
alm. -e blunt and in- 
fully as long eae on the abdominal ee > anne: The 
The meg ; mite) alone is (ormeay ith spines 
conspicuous; the sixth so {with SP 
is furnishec 
telson is squarely truncate at the apex and is 
i like 
— ai a ae ree S)eis most peculiat and utterly unl 
e pe a . ) 
: ohlv triangular in 
1 position each of the two halves 1s aaa ers one oP 
fee nd is provided with bwO eae Bead directed inwards, 
ee ; 1 and inferior aspect and one, curve 
its dista 
cee oats i In place of the 
inner margin. f 
ises close to the superior : rear the line o 
nie all pleats, which are usually found 1 
numero 
b) = 
