On the Larval Stage of Hjpoderma bovis, 69 



transversely striated, the stria running into reticulations 

 wliich are stronger in the centre. Pro- and mesoplearas 

 closely punctured except at the apices ; the raetapleurae 

 rugosely punctured except at the base above ; the basal 

 furrow distinct, deep, and marked all over with short stout 

 keels. Mesosternum closely punctured, except in the centre ; 

 the furrow is wide and deep and becomes wider and deeper 

 towards the apex. Near the base the mesopleurte are raised ; 

 the apex of the raised part curved above, and it is marked at 

 irregular intervals with some stout keels. I-iegs black, 

 covered with white hair, the calcaria rufous. Wings fusco- 

 violaceous ; the stigma and nervures black ; the first trans- 

 verse cubital nervure is oblique, faint above, completely 

 obliterated below ; the first recurrent 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 tiie 

 base, most strongly on the lower side ; the constriction on the 

 second segment finely striated. 



As the fact is not alluded to by 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 Hypoderraa bovis. By P. 

 KoOREYAAR, Veterinary Surgeon to the Amsterdam 

 Public Abattoir *. 



At a meeting of the Nederlandsche Dierkundige Vereeniging 

 Iield in October 1^95 Dr. C. Ph. Sluiter exhibited certain 

 CEistrus-\siX\^ which had been found by myself in the spinal 

 canal of a young bullock. 



Since then I have met with (Estrus-\^vyse, 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 larvae lie freely in the fatty tissue between the dura 

 mater spinalis and the periosteum, especially in the hinder- 

 most portion as far as the cauda equina. 



in the fresh condition the larvaj are of a transparent white 

 colour, with a light green interior. They are segment-id and 

 oblong in shape; the segmentations are more distinctly 



* Translattd by E. E. Austen from the ' Tijdschrift der iSederlandscLo 

 Dierkundige Vereeniging,' 2^« serie, deel v. (1898) pp. 29-34. 



