274 
Oriental Sore 
PAGE 
H. Character of the developmental forms of the sore para¬ 
site in bed bugs and in Stegoviyia fasciata . . 311 
I. Attempts to transmit the sore by bites of Stegoniyia 
fasciata ......... 312 
J. Origin of the disease . . . . . . . 313 
Conclusions ......... 316 
II. The life history of Lankesteria culicis (Boss 1898) . . 318 
Gregarine in Stegomyia fasciata ...... 318 
General account of the infection ..... 318 
Encystment.320 
Nuclear multiplication.321 
Gamete formation and conjugation .... 322 
Development of sporocysts.323 
III. Some observations on the development of the haemogrega- 
rine of the leucocytes of the dog .... 324 
Occurrence of the infection ...... 324 
Eeproduction in the spleen and bone-marrow . . 325 
Further development of the leucocytic stage in the tick 
Bhipicephabis sanguineus .... 329 
IV. Flagellates of house-flies.332 
Introduction. 
The present report is an account of observations made in Bagdad 
during the year 1910 (March to November) on the Oriental Sore as it 
occurs in this part of the world. Though the sore of Bagdad may not 
differ very markedly from that of other places, it is so common here 
that all stages and types of the sore may easily be studied, and such 
points as the early age of infection, immunity, and duration of the 
disease are very clearly exemplified. Accordingly, a more or less 
complete account of this disease of Bagdad, known locally as the Date 
boil or Arabic “ Uchut,” will be given, though descriptions of the sore 
as it occurs in several parts of the world have been published by other 
observers. During the investigations various side issues arose, and as 
these suggest certain interesting points, three sections have been added 
dealing with (1) the life history of Lankesteria culicis (Koss) a gregarine 
of Stegomyia fasciata, (2) Haemogregarina canis and its development 
both in the dog and the tick Rhipicephalus sanguineus, and (3) Her- 
petonionas muscae doniesticae, and other flagellates of the house-fly. 
During the first six months in Bagdad, I derived great help from 
my assistant Mr Stremes, but early in September there occurred a 
deplorable accident which resulted in the death of Mr Stremes, and the 
destruction of part of the laboratory by fire, together with the bulk of the 
