356 



PKOF. T. S. COBBOLD ON THE 



striate, the punctures very irregularly placed on the striae, the latter 

 obsolete towards the apex ; interspaces very minutely granulose- 

 punctate, sparingly aciculate. 



G-enus Deuterocampta, Erichs. 

 Deuterocampta Saundersi, n. sp. Ovata, convexa, nigra, nitida; 

 thorace subremote punctato, lateribiis latis margineque apicali angusto, 

 medio angulato, flavis; elytris evidenter piinctato-striatis, utrinque 

 vitta suturali, basi et apice angustata, maculisque sex, superficiem 

 fere ampleetentibus, nigris ornatis; harum duabus communibus, 

 prima pone basin, subcordata, secunda ante apicem, transversim tri- 

 gonata, tertia subrotundata, ad marginem huraeralem adfixa, quarta 

 et quinta prope medium transversim positis, oblongis, externa postice 

 obliqua, ad marginem adfixa, sextaque marginali, minore, ad plagam 

 communem trigonatam parallela. Long. 4 lin. 



Hob. Brazil ; a single specimen, formerly in the collection of 

 Mr. W. W. Saunders. 



Four lower joints of antennse, together with the palpi, piceous ; 

 face excavated and distinctly punctured on either side ; middle of 

 front and vertex nearly impunctate, impressed with a fine longi- 

 tudinal groove ; upper margin of clypeus angulate ; antennse 

 slightly less than half the length of the body, the four lower joints 

 piceous, the five outer ones distinctly thickened. Thorax nearly 

 three times as broad as long ; sides nearly parallel at the base, 

 rounded and converging in front; disk subremotely punctured, 

 sides impunctate. 



The Life-history of Filaria lancrofti, as explained by the Dis- 

 coveries of Wucherer, Lewis, Bancroft, Manson, Sonsino, 

 myself, and others. By T. Spei^cer Cobbold, M.D., F.E.S., 

 F.L.S., Professor of Botany and Helminthology, Eoyal 

 Veterinary College. 



[Eead March 7, 1878.] 



The time has now arrived when we may, with profit, pass in 

 review the essential facts of Hsematozoal discovery in relation to 

 this Filaria, and build up, as it were, a complete life-history of 

 one of the most remarkable parasites that has ever engaged the 

 attention of helminthologists. In short, I propose to show the 

 steps by which we have acquired our present knowledge, what 

 that knowledge actually expresses when summarized in the lowest 

 possible number of convenient terms, and what practical conse- 

 quences may be expected to flow from a fuller recognition of its 



