A new species and further records of quill mites (Acari: Cheyletoidea: Syringophilidae) parasitic on birds (Aves) in England

Four additional species of quill mites of the family Syringophilidae Lavoipierre have now been recorded in England. This includes one new species, Bubophilus aluconis sp. nov., which parasitizes the tawny owl Strix aluco (Strigiformes: Strigidae). It differs from other species of this genus, B. ascalaphus Philips et Norton, 1978 and B. asiobius Skoracki et Bochkov, 2002 by the number of chambers in transverse branch of the peritremes (2-3), the length ratio of setae vi and ve (1:1.6-2), and the lengths of the stylophore and aggenital setae ag1 (180 and 135-145, respectively).

Anatomical Demonstration of the Nerve-Supply to the Flexor Tendon

A dissection of four unembalmed human fingers demonstrated a branch from the digital nerve which enters the flexor tendon sheath at the same place as the transverse branch of the digital artery. We conclude that this branch supplies the nerve fibres found within the vinculum.

Crystal Dynamics of Rubidium. II. Anharmonic Calculations of the Phonon Self-Energy and the Heat Capacity

We have made anharmonic calculations of phonon frequency shifts and widths, the thermal strain, and the lattice heat capacity for solid rubidium. The calculations were performed using an interatomic potential derived from the work of Price, Singwi, and Tosi. The calculated shifts are in reasonable agreement with experiment, except in the case of the Σ4 transverse branch in the [ζζ0] direction, where there are definite indications that the calculation disagrees with experiment. The calculated thermal strain is ~15% too high at intermediate temperatures. On the other hand, the calculated anharmonic contributions to the heat capacity are in good agreement with experiment at intermediate temperatures, but are 10 to 20% too low near the melting temperature. The anharmonic contributions are sensitive to the third and fourth derivatives of the potential, owing to the large degree of cancellation between the cubic and quartic terms. Furthermore there is evidence that higher order anharmonic terms may be significant.