PSYCHE. 29 
of the forceps, extending into the distal 
half of the basal joint. Each gland is in 
the shape of a long sac, in the middle of 
which runs a chitinous excretory tube 
strengthened by a spiral fibre, trachea- 
like. Minute perforated cylinders cover 
the outside of the tube, to which are at- 
tached the very long glandular cells, radiat- 
ing out from the central tube. The gland 
is enveloped exteriorly by a tunica propria, 
which is inflected along one side and prob- 
ably reaches, and is attached to, the central 
tube, thus making a long narrow furrow 
along the gland. The latter is remarkable 
for the want of tracheae. The central tube 
opens very obliquelyson the upper surface 
of the forceps just behind the point, form- 
ing a minute, long-oval cleft. 
Mr. J. A. Ryder’s papers® on Lury- 
pauropus, though not anatomical, deserve 
mention here as recording the discovery of 
new genus of Pauropods. 
superficially differs from Pawropus, as does 
Polydesmus from Julus, that is, it is a flat. 
tened and obtected form. There are only 
six actual segmeuts, instead of ten as in 
Pauropus, but like the latter nine pairs of 
legs. Ryder wrongly 
(as he has since recognized) figures the 
legs as terminating with two claws, instead 
of one. The mouth parts, moreover, seem 
to me to project backwards instead of for- 
ward as represented by Ryder. The lar- 
vae are very odd, and apparently composed 
of only three segments. As in Pauropus, 
they are hexapod. 
Any addition to our knowledge of that 
remarkable form Peripatus, which we must 
Hurypauropus 
Eyes are wanting. 
8 Proc. Acad. Nat. Sci: Phila., 1879, p. 139, 164. 
Amer. Nat., vy. 13, p. 603. 
* Quart. Journ. Mier. Sci., v. 19, p.431; also Ca- 
rus’ Anzeig., v. 2, p. 332. 
recognize as a tracheate arthropod, and 
which can hardly fail to throw important 
light on the whole group, is also to be 
Mr. F. M. Balfour has 
just published a short note*® on Peripatus 
capensis. 
nized as segmental, are found ‘ at the bases 
of the feet in two lateral divisions of the 
body-cavity, shut off from the central me- 
dian division by longitudinal septa of trans- 
verse muscles.” These consist of : a dilated 
vesicle opening at the base of the feet; a 
gladly recorded. 
Organs, apparently to be recog- 
coiled glandular tube connected with this 
and subdivided again into several minor 
divisions ; a short terminal portion opening 
into the body cavity. 
gans approach more nearly those of the 
leech. There are besides two glandular 
bodies. 
Balfour finds a suboesophageal ganglion, 
and distinct ventral ganglionic swellings 
for each pair of feet. In the nervous sys- 
tem there is, therefore, more resemblance 
to the normal articulate nerve chain than 
has been supposed to exist. There are 
traces also of a sympathetic system, 
The organ doubtfully described by Mose- 
ley as a fat body, turns out to be a glandu- 
lar tube, opening by a non-glandular duct 
into the mouth. This Balfour regards as 
homologous with the salivary glands, and 
thus of course we find another arthropodan 
affinity in Peripatus. 
Mr. A. Croneberg gives an abstract ” of 
a paper in the Russian language, on the 
structure of three genera of Hydrachnida 
(Hydrachna, Eylais, Nesaea). The mouth 
parts, the genital, and digestive organs are 
These segmental or- 
10Carus’ Zool. Anz., v. 1, p.315. Croneberg has 
also published a paper (Bull. Soc. Imp. Nat. Mos- 
cow, 1879, No. 2, 234), not yet come to hand, on 
the structure of Trombidium. 
