Entomological Society. 8897 
‘A paper was read (No. 5) from Mr. Wilkin, on the genus Geotrupes of Latreille 
and Dumeril, defining its characters and dividing it into sections. 
“A pauper was read (No. 6) from Mr, Wilkin, on the Linnean species of the Carabi, 
with observations resulting from an examination of the original specimens labelled by 
Linneus, and preserved in the Linnean collection now in the possession of Dr. Smith. 
“ Some remarks were made on the subject of Mr. Curtis's paper, in opposition to 
the hypothesis proposed by him, viz., that the sound produced by C. fuliginosus and 
others when captured arises from the friction of the abdominal segments on each other. 
The majority rather attributed the sound;to friction of the edges of the elytra. 
“ Mr, Wilkin communicated to the Society the result of an experiment which he 
had made on Blaps lethifera. The ammoniac scent attributed to the insect by Mr. 
Sparshall suggested that possibly some crystallization of ammonia might be obtained 
from it. But after destroying a large number of specimens by hot water in a confined 
vessel, and thereby obtaining a strong solution of the juices of the animal, Mr. P. 
Taylor (who assisted Mr. W. in the experiment) ascertained by the test of a strong 
solution [here a blank occurs] that there was not the smallest portion of ammonia. 
By dissection, the discriminating characters of the sexes were ascertained, the male 
being considerably broader and shorter; the mucro of the elytra is shorter, and at the 
base of the abdomen is seated a small tuft of yellow hairs. In size and punctuation 
this species varies considerably. Sume specimens are smooth, others much more roughly 
punctyred. In the collection of the late Mr. Beckwith is preserved a specimen of the 
male having one elytron smooth, the other so deeply punctured as to be rugulose. 
And among the specimens captured at the Horse Barracks by Mr. W. he was fortunate 
enough to meet with the female of this singular variety, which, together with some of 
the Carabi mentioned in No. 6, were exhibited. 
“At the request of Rev. W. Kirby, of Barham, we elected him a Member of the 
Norwich Entomological Society.” 
Professor Westwood exhibited specimens of two new Coleoptera, each of such sin- 
gular form as to necessitate the creation of a new genus for its reception: they were 
characterized as follows :— 
€ 
Genus OccocePHatus, Westw. 
Genus (vel potius subgenus) novum in familia Malachiorum Cephalogoniz, Wollast., 
proximum. Differt capite in maribus prothorace fere duplo latiori, postice exca- 
vato, excavatione lata, antice trisinuata, in medio tuberculo minuto obscuro in- 
structa ; facie in utroque sexu antice brevi nec conica. Antenne breviores, sim- 
plices, articulo 2do minuto, 3tio et 4to sequentibus haud multo brevioribus. 
Prothorax brevis late cordatus. Palpi labiales articulo ultimo subovali (nec 
subsecuriformi). Elytra modice elongata, apice in singulo rotundato. 
. 
OccocepHatus Capito, Westw. 
Lutescens nigro varius. Capite nigro excavatione ¢ luteo variegata. Prothorace 
fulvescenti macula magna media, alterisque duabus parvis lateralibus (interdum 
cunfluentibus). Elytris luteis, humeris late, cum scutello maculisque duabus 
maguis subapicalibus nigris. 
Long. corp. : 
Habitat in Insula Canariensi. D, Wollaston. 
VOL. XXII. F 
