232 Transactions. — Zoology. 
2. A. exiguus, Stimpson. 
Pl. XVIIL, fig. 2. 
This species is most imperfectly described in the Brit. Mus. Cat., p. 75, 
so that it is not easy to identify, as even the figure—unless accompanied by 
drawings of separate parts—is not complete enough in its detail. The 
following is all the description given :—‘‘ Pleon having the third segment 
tumid posteriorly, and curved down towards the fourth ; the posterior 
margin deeply concave ; the infero-posterior angle produced and directed 
upwards ; fourth segment having a deep dorsal sinus. Pereiopoda having 
the dactylos long and slender; basos of the three posterior margins deeply 
serrated along the posterior margin.” 
To which I add the following as descriptive of specimens obtained by 
me :—Eyes very inconspicuous. Superior antenne with a 5-jointed flagel- 
lum; secondary appendage 3-jointed, half as long as the flagellum. Inferior 
antenne twice as long as superior. Mandibles with rows of strong teeth on 
the cutting edge. First gnathopoda having the carpus and propodos sub- 
equal, the latter slightly ciliated, and with a well-defined palm. Second 
gnathopoda having the propodos shorter than the carpus, oval, densely 
ciliated, destitute of a palm, and having a very small dactylos. Third 
pereiopoda the shortest ; fifth pair with broad basa. Length, 0°26 inch. 
Hab. Dredged in Paterson Inlet, in 8 fathoms. j 
The type specimens were obtained by Stimpson ‘on sandy bottoms 12 
8-15 fathoms ” off the east coast of North America. 
Sub-fam. Puoxines. 
Genus Phoxus, Kroyer. 
Superior antenne with a secondary appendage, inferior pair as Jon 
the superior. Mandibles with an appendage. Mazxillipeds subpediform. 
Both pairs of gnathopoda subchelate. Coxe deeper thon the respective 
segments. Posterior pair of pereiopoda shorter than the preceding. Telsun 
double.* 
1. P. bate, W. A. Haswell (Proc. Linn. Soc. N.8.W., vol. iv., p- 259): 
Cephalon produced into a long obtuse hood, extending almost to the end 
of the peduncle of the superior antenne. Eyes ovate-reniform, black, co2- 
spicuous. Antenne short: flagellum of superior pair longer than - 
base ; secondary appendage about two-thirds as long as flagellum : inferior 
pair rather exceeding the superior ; peduncle much exceeding the flagellum, 
joints flattened, bearing numerous short obtuse spines on their upper 5” 
face, and long sete on their outer margins. Gnathopoda subequal #8! 
g as 
‘ ‘ . “c t 
* In the generic character given in the Brit. Mus. Cat., p. 97, it is said :— wae eee 
appreciable,” a footnote pointing out that the di is is doubtful. In some wy 
—— the eyes had lost most or all of their pigment, but in others they Wer? 
lack. 
