166 GARRISON. 



two niontlis. Only about fifteen isolated terminal segments of the worm were 

 secured from the first case. The second specimen consisted apparently of a 

 fairly complete strobila, but was without a head. These specimens were sent 

 to the Direeteur des Archives de Medicine and forwarded to Davaine, who, in 

 1869, described and figured the worms and proposed a new species which he 

 called Tccnia madagascariensis. These specimens were later deposited in the 

 collection of Blanchard's laboratory (Nos. 108 and 109, Collection Davaine). 



In 1873, a second finding of the species was made at the small island of 

 Nosse-Be, just off' the northwest coast of Madagascar. This was not published 

 until 1899 when Blanchard found the specimen in the parasite collection of the 

 Faculty of Medicine of Paris (No. 33, Collection Davaine) bearing the label 

 "Nosse-Be, November, 1873, passed by a little girl of three years." This specimen 

 was very incomplete, being only 32 millimeters long, but it possessed the head, 

 and Blanchard's paper in 1899 gave the first description and the only published 

 drawing of the head of this species. 



In April, 1891, Dr. P. Chevreau announced the finding of four cases of infec- 

 tion -with D. madagascariensis in children at Port Louis, on Mauritius Island, 

 off the west coast of Madagascar, where, at the instigation of Blanchard, he had 

 made a special search for the parasite. Two of the children were little girls of 

 five years. The sex and age of the other two were not given. The specimen 

 from one of the children, which was sent to Blanchard (Collection R. Blanchard, 

 No. 8) consisted originally of three fragments which in transit were broken into 

 eight, and, according to Blanchard, represented parts of two worms. There was 

 no head. Blanchard gave a brief description of the specimen in 1891. 



In the same year (1891) Leuckart reported that he had received from Krabbe 

 a specimen of Davainea madagasca7'iensis collected at Bangkok, Siam, from the 

 three-year-old son of a Danish sea captain, living on his father's ship which was 

 plying in Asiatic waters. Later in 1891, Leuckart reported the results of his 

 study of the specimen, which consisted of a single worm about 24 centimeters 

 long, including the head. This material was further studied by Holzberg in 1897. 



The fifth and last finding of the species prior to the present one was reported 

 from South America in 1895 by Daniels who obtained two specimens at autopsy 

 from the jejimum of an adult, male aboriginal Indian at Georgetown, British 

 Guiana. The heads were not found and, having only Davaine's original . descrip- 

 tion of D. madagascariensis available, Daniels considered his specimens to be 

 specifically distinct and proposed a new species under the name "Tccnia dcmera- 

 riensis?" A part of Daniels's material was sent to Sir Patrick Manson and 

 through him reached Blanchard (Collection R. Blanchard, No. 236) who estab- 

 lished its identity with D. madagascariensis. 



The history of the six findings of Davainea madagascariensis, accordingly, 

 extends over a period of forty- two years, and may be summarized as follows: 



Grenet, 1867, Comoro Islands, two cases (male child eighteen months old 

 and girl two years old, from the Antilles and from Reunion, respectively), two 

 worms without heads ; specimens studied and published with illustrations by 

 Davaine in 1869. 



— — — ?, 1873, Nosse-Be Island, one case (three-year-old girl), one immature 

 worm with head; specimen found in Davaine collection, studied and published 

 by Blanchard in 1899 mth figure of head. 



Chevreau, 1891, Mauritius Island, four cases (two girls five years old, two 

 with age and sex unknown) ; fragments of two worms without head from one 

 case sent to Blanchard and briefiy described the same year. 



Krabbe, 1891, Siam, one case (Danish boy three years old) ; one specimen 



