180 M. H. Krabbe on the Entozoa of Man and 



types on the Calabar coast. Of Celina all the species previously 

 known were four from South America, one of which and another 

 is also found in the United States. There are now : — 



Celina latipes, Aube. Interior of Brazil. 



aculeata, Aube. Brazil. 



angustata, Aube. United States and Cayenne. 



grossula, Leconte. Louisiana. 



parallela, Bab. Rio Janeiro. 



hydroporoides, Murr. Old Calabar. 



[To be continued.] 



XXX. — On the Entozoa of Man and the Domestic Animals in 

 Iceland, By M. H. Krabbe*. 



There has long existed in Iceland a very serious endemic disease 

 which usually attacks the liver, where it causes tumours often of 

 very large size, but also affects other organs^ although less fre- 

 quently. This disease has not escaped the attention of the 

 physicians of the country; but until recently they were very 

 imperfectly aware of its nature, and regarded it as a chronic 

 hepatitis, an affection which presents itself but rarely in cold 

 climates. 



During a residence in Iceland in 1847 and 1848, M. Schleisner 

 ascertained that it was not a disease peculiar to the liver, and at 

 the same time demonstrated that it was produced by hydatids, 

 which M. Eschricht subsequently recognized as Ecliinococci. 

 At this period the investigations of Siebold, Kiichenmeister, and 

 Leuckart having thrown much light upon the relations of the 

 vesicular worms to the Tsenias, the frequency of Echinococci in 

 Iceland strongly attracted the attention of these naturalists; and, 

 as I was fortunate enough to have assisted at the previous in- 

 vestigations of Eschricht, this question likewise awakened all 

 my interest. It was in the domestic carnivora that the corre- 

 sponding Tsenias were to be sought; and, in order that I might 

 thoroughly know the worms which these animals harbour, and 

 at the same time establish a basis of comparison for researches 

 in Iceland carried on for several years, I made a special study 

 of the Entozoa in question at the Veterinary School of Copen- 

 hagen. 



On examining the intestines of 500 dogs of Copenhagen and 

 its environs, I found Tcenia marginata in 14 per cent, of them, 



* Translated by W. S. Dallas, F.L.S. &c., from the * Comptes Rendus,' 

 January 21, 1867, pp. 134-138. 



