374 Rev. L. Guitpinc on the Natural History of Oiketicus, 
Habitaculum* cylindraceum, utrinque apertum, filis textum et 
ramulis foliisque morsis munitum. Larva metamorphosin 
subiens (apice semper aperto ad fugam imaginis masculæ, 
et ad nuptias foemine), januam clausam filis ad ramum de- 
ligat, capiteque prono somnum expectat. 
Pupa mascula fronte productà adminiculis analibus duobus ma- 
joribus incurvis: segmentis abdominalibus serie unicá spi- 
nularum incurvarum, unicá recurvarum. 
‘Regio. India Occidentalis. 
Genus affine Zeuzeræ? Lat. 
Typus genericus. Oiketicus Kirbyi, Nobis. - 
Orrkericus Krrevyr. 
4. O. ater purpureo-nitens, alis superioribus elongatis: infe- 
rioribus angulo anali subproducto ; antennis dimidiato- 
pectinatis apice serrulatis: tarsis rufescentibus : ore pal- 
lido. 
?. O. oculis rufescentibus : thoracis squamis corporisque squa- 
mulis vitellinis: collo anoque brunneo lanuginosis. 
Larva obesa pedibus atris latissimis, propedum musculus retrac- 
torius apice ferrugineo, spinulæ prehensoriæ atre recurve. 
Corpus parce pilosum segmentis duodecim, lateribus pro- 
minulis: anterioribus tribus capiteque rotundato flavescen- 
* The habitaculum or dwelling of the larva of insects must be distinguished from the 
folliculus or cocoon, which is solely prepared for the defence of the pupa, and closed on 
all sides. It is observed in the Tineade and other insects, but is commonly of a flat- 
tened shape. In one Trichopterous ? species known to me it is flattened ovate, open at 
the ends, and fixed to rocks in rivers. In a species of the family Botyde which I have 
lately detected in vast numbers in our mountain streams, it is flattened, irregular, and 
attached by'the margin and two pillar-like processes to the rocks below the surface of 
the water. It possesses a semicircular janua for the escape of the imago, and is fenes- 
trated on the margin. The larva of this curious moth breathes by tracheal branchiæ ! ! 
tibus, 
