352 Mr. Toulmin Smith on the Classification 
was by far the most abundant coleopterous insect I met with. 
It is not at all gregarious, but single individuals are seen resting 
on the leaves of trees that overhang the sides of the roads; 
scarcely a shrub being without several for miles together. 
98. Elaphidion spinicorne. From the creaking sound made 
by this species in common with many others of the Longicornes, 
it is commonly known by the name of the Fiddler. It is one of 
those species whose activity is not confined to any particular sea- 
son or locality^ but is a common visitor at all times, flying in at 
open windows, and crawling around the candle- shades, or up the 
walls, in the evening. The spinous processes of the antennae and 
of other parts are so long and sharp that they pierce the fingers 
when the insect is handled, though ever so tenderly. 
99. Elaphidion Q-fasciatum. Very common on the leaves of 
low trees by the sides of the Hampstead Road throughout June. 
100. Elaphidion bidens ? Rare : a specimen taken at the 
Hampstead Road near the end of June. 
101 to 104. Elaphidion (sp. near msw/are) . And three other 
species ; occurring sparingly in June, on the Hampstead Road, 
and occasionally flying in at the open window at Content, in the 
evening. 
105. Callichroma virens. Of this magnificent insect, which I 
have taken also in Alabama (U.S.), two specimens occurred in 
Jamaica, both of them much larger and finer than my American 
specimen. The first was taken resting on a projecting twig of a 
tree overhanging the Hampstead Road, June 24th, pretty high 
up. The other was brought me from the woods behind Blue- 
fields, on the 18th July. Both were strongly fragrant during 
life. 
[To be continued.] 
XL. — On the Ventriculidse of the Chalk; their classification. 
By J. Toulmin Smith, Esq. 
[Concluded from p. 295.] 
Genus Brachiolites. 
Character. Shape and size very various, but always much lobated 
or branched : internal cavities of lobes and branches always 
communicating : extremities closed or open : membrane form- 
ing the wall sometimes plain sometimes folded ; margin of wall 
thinned or rounded off to an edge : membrane of wall poly- 
piferous on both external and internal surfaces. 
l)e])arting altogether from the forms hitherto examined, the 
])rcsent genus is characterized by its lobated or branehed divi- 
