68 
supposed to be a natural structure, but Prof. Owen, on microscopic 
examination, believed that the hairs were from the larva of the Tiger- 
moth (Arctia caja). 
Dr. Crisp thought the subject worthy of future inquiry, and that 
it would be important to ascertain whether this hairy lining is present 
in the Caprimulgide and other insectivorous birds. As regards the 
spines of the beetles and the hairs of the larva of the Tiger-moth, 
the microscope shows this important difference,—the hairs are all 
furnished with alternate lateral aciculz ; the spines of the beetles are 
smooth, with sharp points. 
Explanatory drawings of the parts were exhibited. 
Dr. Crisp also showed two new species of worms which he had 
recently obtained ; one from the lung of the Egyptian Cobra (Naja 
Hajé) which had been in the Society’s collection. It is 3 inches 
long, and its chief peculiarity consists in its annular protuberances, 
twenty-eight in number. 
Dr. Baird has described this worm as a new species, in the British 
Museum Catalogue, under the name of Pentastoma annulatum*. 
The other specimens were two nematoid worms, which Dr. Crisp 
obtained from the knee-joint. of the common Coot (Fulica atra). 
They are of a cylindrical form, highly elastic, and coiled in a spiral 
manner round each other; the larger of the two, when extended, is 
about two inches in length, the smaller about an inch and a half; the 
extremities are tapering ; the tail pointed; the head more orbicular. 
Under a power of 50 diameters, the alimentary canal can be distinctly 
seen. 
Dr. Crisp believed that this worm had not been before described ; 
it most resembled the Spiroptera Falconis of Rudolphi, or the Spi- 
roptera serpentulus of Diesing. In the Museum of the London 
College of Surgeons (prep. 170) there are two Filarie, one about 
six inches long, from the knee-jomt of the Kangaroo (Macropus 
major): and Diesing, in his ‘Systema Helminthum,’ 1850, mentions 
the Filaria subspiralis, from the tendons of the foot of a Crane; and 
the Spiroptera serpentulus, from the leg and foot tendons of sevetal 
species of Falcon. 
The following paper was read :— 
ON A NEW SPECIES OF DENDROCOLAPTES. 
By Putuie Luriey Scuater. 
(Aves, Pl. LVII.) 
The fine species of Dendrocolaptes which I now bring before the 
notice of the Society, was discovered by Mr. Wallace in the neighbour- 
hood of Para. My specimen is from the Capin river, where it was 
collected in June 1849. A second, in Mr. Wallace’s own collection, 
marked ‘ Para,’ is the only other I have seen. Had I not the 
authority of Mr. Eyton and the Baron de la Fresnaye for considering 
* Dr. Baird has also given a description and figure of this worm, in the Pro- 
eedings for the present year, page 22. .Annulosa, Pl. XXX, fig. 7, 
