Oil the Larval Stage of Iljpoderraa bovis. 69 transversely striated, the stride running into reticulations vvl)ich are stronger in the centre. Pro-and mesopleiirai closely punctured except at the apices : the metapleuras rugosely punctured except at the base above ; the basal furrow distinct, deep, and marked all over with short stout keels. i\lesosternum closely punctured, except in the centre ; the turrow is wide and doep and becomes wider and deeper towards the apex. Near the base the niesopleurte are raised ; the apex of the raised part curved above, and it is marked at irregular intervals with some stout keels. Ijegs black, covered with white hair, the calcaria rufous. Wings fusco-violaceous ; the stigma and nervures black ; the first trans-verse cubital iiervure is oblique, faint above, completely obliterated below ; the first rcLurrent nervure is received shortly beyond the middle, the second in the basal third. Abdomen shining, the basal segments slightly, the apical strongly punctured ; the segments strongly constricted at the base, most strongly on the lower side ; the constriction on the second segment finely striated. As the fact is not alluded to Ity Col. Bingham, it may be pointed out that the males in this genus have hairy eyes. This makes the fourth Indian species. Khasia Hills. IV. — The Larval Stage of Hypoderma bovis. By P. KOOEEVAAR, Veterinary Surgeon to the Amsterdam Public Abattoir *. At a meeting of the Nederlandsche Dierkundige Vereeniging held in October 1895 Dr. C. Ph. ISluiter exhibited certain (Estrus-\2iX\2i which had been found by myself in the spinal canal of a young bullock. Since then 1 have met with (Estrus-\^\-Y2d in the vertebral canal in the case of a large number of cattle from nine to eighteen months old and in certain full-grown animals up to the age of six years. The larvEe lie freely in the fatty tissue between the dura mater spinalis and the periosteum, especially in the hinder-most portion as far as tiie cauda equina. Jn the fresh condition the larvas are of a transparent wliite colour, with a light green interior. They are segmented and oblong in shape ; the segmentations are more distinctly * Translated by E. E. Ansten from the ' Tijdschrift der Nederlaudsclie Dierkundige Vereeniging-,' L'f'e serie, deel v. (1898) pp. 29-34.
BioStor
