946 MR. T. H. WITHERS ON 
pedunculate Cirripede. It was at this stage of my observations 
that I went to examine some Cirripedes at the Museum of Prac- 
tical Geology, and among them noticed a beautifully complete 
example of the species to which most of the isolated valves belong. 
This fine specimen was collected by Mr. J. Rhodes from the 
“ Upper Chalk of Watford Tunnel,” * and was apparently obtained 
from a hollow flint at about the same horizon as the isolated 
valves from Surrey. 
Through the kindness of the Director of the Geological Survey 
and Dr. F. L. Kitchin, I was enabled to borrow this specimen for 
description. 
Although this new Cirripede occupies a position intermediate 
between the Pollicipedide and the Verrucide, I do not think it 
advisable to found a new family for its reception. It will, I 
think, be sufficiently distinguished if it is placed in a new genus, 
and the diagnosis of the family Verrucide extended to include it, 
since, it is undoubtedly a primitive Verrucid. 
The remaining valves, which obviously do not belong to this 
Verrucid, are described as a new species of Scalpellum (sensu 
lato). 
Family VERRUCID# emend. 
Sessile, asymmetrical, box-like* barnacles, in which a scutum, 
tergum, rostrum, and carina, with or without a rostral- and a 
cavinal-latus in addition, are immovably united to form the 
“wall”; the remaining scutum and tergum are movable, and form 
the lid-like top. 
PROVERRUCA, gen. nov. 
Verrucids in which a rostral- and a carinal-latus are present on 
the rostro-carinal side, and in which none of the valves has 
developed interlocking ribs. 
PROVERRUCA VINCULUMYT, sp. n. (PI. I. figs. 1-9; Text- 
fig. 1, C-F.) 
Material.—(1) A single complete individual in which the moy- 
able seutum is somewhat displaced, and the upper portion of the 
rostral-latus broken away. (2) A number of isolated valves 
comprising :—1 fixed scutum (left), 6 fixed terga (5 right and 
1 left), 4 movable scuta (1 right and 3 left), 2 movable terga 
(left), 1 carinal-latus (right), and 2 rostral lateral valves (left). 
There are no isolated examples of the rostrumand carina. Seven 
individuals are represented by these remains. 
Holotype.—The complete specimen (text-fig. 1, C-F), Museum 
of Practical Geology, register number 3204. 
Horizon and locality.— Lower Senonian, Upper part of J. cor- 
testudinarium-zone: Slines Oak Pit, Worms Heath, Woldingham, 
Surrey. ?@Same horizon: Watford Tunnel, Hertfordshire. 
*° 1889. Mem. Geol. Surv., Geology of London, vol. i.p. 77; 1904. Mem. Geol. 
Surv., Cretaceous Rocks, vol. il. p. 232. 
nga 
+ vineulum, a bond. 
