308 JOURNAL OF SCIENCE. 
insect, but only once succeeded, and that when he was away from 
home; so that only the dead remains were obtainable. Prof. 
Hutton gave me the welcome intelligence that these remains, 
with larva and case, were on their way to this country in charge 
of a friend who was coming home. This gentleman (Mr. C. C. 
Bowen, Governor of the Canterbury Province) recently arrived, 
and the materials are now in my hands. 
We are so accustomed to associate Caddis-worms with fresh 
water, that the arrival of these materials was awaited by me with 
not unnatural impatience. We are already acquainted witha 
terrestrial species (Zzozcyla); but no truly marine form had been 
recorded. Itis, I believe, known that at least one _ species 
can exist in the brackish water of the shores of the 
Baltic, at any rate in the vicinity of the mouths of large rivers. 
Others certainly manage to exist in marshes that are liable to 
the occasional influx of salt water during high tides, and in pools 
near the sea-shore into which sea-water sometimes enters in 
large quantities during storms. These instances, however, 
scarcely affect the matter now under consideration. So far as 
I can ascertain, these New Zealand larve are quite outside the 
influence of river-water ; and the materials of which the case is 
chiefly composed appear to prove this. 
The specimens before me are not in good condition on the 
whole. Theyconsist of :— . 
(i.) A straight tubular cylindrical case, 10 millim. long by 
nearly 3 millim. in diameter, which is nearly equal throughout. 
To the inner silken tube are attached fragments of some white 
coralline seaweed (with a few quartz [?] fragments &c.), arranged 
in no special order. In one or two instances the fragments are 
larger, showing the jointed nature of the alga; but mostly they 
consist of single joints. The case is empty; but I think it wasa 
pupa-case, one end showing signs of having been closed in a 
manner that is usual when the inmate is in the pupal condition. 
(ii.) A larva (probably young), mounted asa transparent 
object on a microscopic slide, crushed and a good deal damaged. 
This larva is 6 millim. long. The head is rounded oval in form, 
blackish above, but with three pale spots, one posteriorly, the two 
others (smaller) on each side of the disk ; there are also pale dots 
round the small eye-spots ; the anterior margin and labrum are 
provided with long hairs. Viewed from beneath, the mouth-parts 
are not discernible. The pronotum is narrow and transverse, 
but with anterior angles much produced; the colour is testaceous, 
mottled with paler ; fringed with long hairs. Mesonotum similar 
in form, but somewhat broader, and the angles less produced ; 
almost entirely pale yellowish, slightly mottled with testaceous ; 
less chitinous than either the head or pronotum. Metanotum 
the broadest segment of the thorax, scarcely chitinous ; the sides 
apparently with a hair-bearing tubercle. Legs wholly bright 
yellow ; the anterior pair short, the two other pairs longer (not 
extraordinarily long) and nearly equal. All the legs are simple 
a. 
