NEW ZEALAND PYCNOGONID. 29 
produced in Huxley’s “Anatomy of the Invertebrates,” p. 384. 
From the journal in question J have translated the following de- 
scription, which may be of service to collectors and students of 
Natural History :— 
AMMOTHEA PYCNOGONIDES, NOB, 
“Head short, thick, and not distinguishable from the thorax, The rostrum or 
beak irregularly lanceolate, terminating in an obtuse point, thick, and two-thirds of 
the length of the body. Footjaws small, short, and hardly reaching beyond the 
middle of the trunk. The palpi on the other hand extend beyond the mouth. The 
transverse diameter of the thorax is almost equal to its antero-posterior diameter. 
First articulation of the limbs very difficult to distinguish from the thorax. Oculi- 
ferous tubercle rounded and slightly swollen; it is quite smooth, whereas the thorax 
bears numerous hairs and some strong spines. The palpi and legs are equally hairy, 
the three last articulations of the latter armed with strong spines.” 
CLASSIFICATION OF PYCNOGONID (AFTER SEMPER). 
(ORDER PANTOPODA.) 
Fam. I.- PYCNOGONIDE (PROPER). 
Antenne (Kieferfiihler*) wanting. 
Genus I.—Pycnogonum, 4rinnich.—Antennze and palpi wanting; ovaries I0- 
jointed ; metamorphosis complete. 
», 1J.—Phoxichilus, 17. Zdwards (Latreille),—Antennz and palpi wanting ; 
ovaries 7-jointed ; metamorphosis ? 
,, I1I].—Pasithoé, Goodstr (Endeis, hillippz).—Antenne wanting; palpi 
7-joited ; ovaries g-jointed ; metamorphosis ? 
Fam. II.—ACHELIDE. 
Antenne present, but simple—not chelate. 
Genus IV.—Achelia, Modge.—Antennz 2-jointed; palpi 8-jointed; ovaries 
g-jointed ; metamorphosis complete. 
as V.—Zetes, Kréyer.—Antenne without claws, 3-jointed ; palpi 1o-jointed ; 
ovaries 10-jointed ; metamorphosis complete. 3 
»,  WI.—Pariboea, Philippi.iAntennz without claws, 2-jointed; palpi 5- 
jointed ; ovaries 9-jointed ; metamorphosis ? 
Fam. III.L—NYMPHONID. 
Antenne 3-jointed, chelate. 
Genus VII.—Pallene, Yohnston.—Palpi wanting ; ovaries 10-I1-jointed, wanting 
in the males; metamorphosis abbreviated. 
»,  WIII.—Phoxichilidium, 47, dw. (Orithyia, Yohknston).—Palpi wanting; 
ovaries 5-jointed ; metamorphosis complete ; larvz living in Polyps 
(Coryne, Hydractinia). 
»  IX.—Pephredo, Goodsir (? Phanodemus, Costa).—Palpi 3-jointed ; ovaries 
g-jointed ; metamorphosis ? 
. X.—Ammothea, Leach.—Palpi 8-9-jointed; ovaries g-jointed; meta- 
morphosis ? 
», %1,—Nymphon, /abr.—Palpi 5-jointed ; ovaries 9-jointed ; metamorphosis 
complete. 
GEO. M. THOMSON, 
* It is still an open question what terms should be applied to the three short 
anterior pairs of appendages. I shall therefore call them antenna, palps, and ovaries, 
as they are termed by Semper, but am doubtful of the correctness of this application 
of terms, 
