56 
Mr. R. H. Burne, M.A., V.P.Z.S., exhibited some paraffin 
Simulacra of Molluscan and other shells made accidentally by 
Dr. G. V. Ariens Kappers while embedding objects for the 
microtome. During this process, paraffin in a molten state 
accidentally escaped from the mould and set in the shell-forms 
shown, probably owing to distorted crystallization. 
Dr. F. E. Bepparp, M.A., F.R.S., Prosector to the Society, 
read a paper on the Anatomy and Systematic Arrangement of 
the Cestoidea, in which he described a new genus and species 
of the Family Acoleide, based upon a large number of examples 
obtained from the Canadian Tree-Porcupine (Hrethizon dor- 
satum). 
Mr. H. R. Hoae, M.A., F.Z.8., read his report on the Spiders 
collected by the Wollaston and British Ornithological Union 
Expeditions in Dutch New Guinea. This collection confirms a 
good deal of the work of previous authors, and at the same time 
brings to light much that is new. Leaving out the Attide, there 
are representatives of nine families, comprising twenty-six genera 
(of which one is new) and forty-five species or subspecies of which 
some nineteen are new. Included among the latter are the 
following :— 
CoNOTHELE SPINOSA, Sp. n. 
Differs from C. malayana Dol. in having the front lateral eyes twice as long as the 
rear laterals, the rear median smaller still, and the front median 14 times as broad 
as the rear, instead of all the eyes equal. From C. arboricola Poc. in having the 
first pair of legs longest instead of the fourth, and four teeth only on the outer 
margin of the falx-sheath instead of six. From C. doleschalli Thor. similarly in 
the legs, and the latter has the rear median and side eyes close together. 
SELENOCOSMIA LANCEOLATA, sp. n." 
Differs from S. similis Kule. and A. honesta Hirst, possibly the same, in having 
the patella cum tibia and metatarsus cum tarsus about the same length as, or 
shorter than, the femur and trochanter in the first three pairs of legs instead of much 
longer. The abdomen is paler and the lip and maxille the same colour all over 
instead of being particoloured. 
Length 34 mm. 
PsECHRUS CASTANEUS, Sp. 0. 
Differs from P, argentatus Thor., P. libeltii Kule., and P. annulatus Kule. in 
having the legs longer in proportion, the front pair being more than ten times as 
long as the cephalothorax instead of about eight, in having the front median eyes 
as large as the side instead of smaller, and the rear median eyes more than their 
diameter apart instead of less. It is also only two-thirds the size of the first-named 
and larger than the last. 
Length 17 mm. 
FPECENIA CINEREA, sp. n. 
Differs from F’. swmatrana Kale. in its first pair of legs eight times the length of 
the cephalothorax instead of about six, in the median eye-square broader than long, 
and the rear row distinctly procurved instead of nearly straight. The epigyne also 
differs considerably, though rather near to Mr. Rainbow’s drawing of his F. oblonga 
from the Solomon Islands. 
Length 10 mm. 
