74 Port I11.—Twenty-third Annual Report 
In the sketch the exact number and arrangement of the hairs, &c., 
has been attempted, except in the case of figs. 7 and 16, and the draw- 
ings of the protopodite joints. The exact number of sete is not introduced 
on the exopodites, pleopods, uropods, or, in certain cases, on the telson. 
In the drawings of the complete larva the pereiopods are represented 
semi-diagrammatically. 
THe APPENDAGES OF THE First Zoka. 
The appendages present in the first zoéa stage are—(1) the Eyes ; (2) 
Antennules ; (3) Antenne ; (4) Mandibles ; (5) First Maxille ; (6) Second 
Maxille ; (7) First Maxillipedes; (8) Second Maxillipedes; (9) Third 
Maxillipedes ; (10) First Pereiopods ; (11) Second Pereiopods ; (12) Third 
Pereiopods ; (13) Fourth Pereiopods ; (14) Fifth Pereiopods. It possesses 
all the cephalic and thoracic appendages which the adult has. The 
telson is triangular, The pleopods and uropods are not yet developed, 
A detailed description is not necessary ; in addition to the drawing of 
each appendage, short notes will be merely added here. 
EygE, 0., fig. 4, pl. i. 
The eye is large, and has a very short stalk. 
ANTENNULE, @., fig. 2, 7b. 
The antennule is crowned with three esthetascs, one of which is 
specially large, and two hairs. A minute hair was found at the base of 
the <esthetascs on the antennule of one side, but not on that of the other 
side. A little short of the end of the antennule there is a little tubercle 
surmounted by a short plumose hair, Jn Sars’ drawing of the appendage 
the plumose hair is shown larger than in the form here described. 
Herrick’s drawing of the antennule of the first stage of the American 
lobster shows a more differentiated appendage. 
Antenna, A., figs. 1 and 24, ib. 
The endopodite or flagellum (fig. 24) is two-jointed. It bears on its 
extremity four plumose sete. The antenna represented by Herrick has 
a segmented or annulated endopodite. 
The scale of one side had 23 sete; that of the other side had 25 
sete. 
Manp1siz, Mn., figs. 5, 6 and 18, 20. 
The apparent joint in the mandible (fig. 5) above the origin of the 
palp seems to be simply the edge of its jointing with the cephalon. 
The two hairs on the palp (fig. 18) have their distal halves finely 
serrated. 
An enlarged drawing of the cutting edge of the mandible is shown in 
fig. 6. 
First Maxinua, 1m., fig. 27, 2b. 
On the lower lobe the group of four hairs which have been, for con- 
venience, represented as pointed downwards, should be directed upwards. 
