DUPLIN natural history society. 
41 
Pandalus Jeffreysii (?) {Spence Bate.) P. ‘Leptorhynchus {mihi). 
P. P. annulicorni, affine rostro tenui subrecto vix carapacem dimidio 
superante undecim spinulis supra armato; infra quadri denticulato; apice 
bifido. 
Colore : rubro. * 
Habitat: in zonam laminariam, t( Sandycove,” prope “ Dublin.” 
c, rostrum, much enlarged; d, internal antenna, much enlarged. 
Narrow-beaked JEsop Praivn. 
Closely allied to P. annulicornis. Beak narrow, slightly turned up 
at end ; scarcely exceeding half length of carapace; anterior half desti¬ 
tute of teeth above, except a minute one near apex. Eleven spines ar¬ 
ticulated to the rostrum above ; four distinct teeth beneath ; interspaces 
between spines and teeth, with a few hairs; a well developed tooth at 
base of orbit, and a small one below; internal antenna; lobed at base. 
Colour : clear uniform red. 
Habitat: sandpools in Zostera bank, laminarian zone, Dublin Bay. 
The spinules on the superior margin of the rostrum are articulated 
to it, as in P. annulicornis. Eive of them are large and hooked, and si¬ 
tuated on the carapace, the fifth being at the edge of ocular notch ; 
there is then a moderately wide interspace : the remaining six spinules 
being crowded together, and rapidly diminishing in size. The inferior 
teeth very minute, and situated near the apex of rostrum; there is no 
dilatation in the rostrum anterior to the ocular notch below,* and a nearly 
total absence of the setae which so thickly adorn the interspaces of both 
teeth and spinules in P. annulicornis. In habits, the animal resembled 
II. va/rians , in company with which it was taken. 
The beak in typical specimens of P. Jeffreysii is straight. 
The Meeting then adjourned to the 8th of January. 
vol. v.— prop. soc. 
