66 



CoNNAL (A.) & CoGHiLL (H. S.). Annual Report of the Medical 

 Research Institute of Nigeria for 1914. London, 1916, 22 pp. 

 [Received 16th February 1916.] 



Yellow fever investigations were carried on throughout the year. 

 The disease was transmitted to guineapigs by means of direct sub- 

 cutaneous or intraperitoneal injection of blood from human cases. 

 The infection was kept up through a series of guineapigs by the same 

 method of inoculation. Para])Jasma flavigenum was constantly found 

 in the blood of the infected animals. Two monkeys were inoculated 

 from infected guineapigs. P. flavigenum was found in the blood for 

 a short time after the injection and a portion of the spleen showed 

 " blue bodies " also. Observations on the feeding habits of Stegomyia 

 fasciafa showed that the female feeds either during the day or night, 

 and after feeding for two or three successive days may remain one or 

 two days without feeding. Examination of native children in the 

 town of Abeokuta showed that 12 out of 35 possessed intra-corpuscular 

 bodies similar to P. flavigenum and 18 were infected with malaria. 

 Out of 65 guineapigs examined in the same town, 18 showed Para- 

 ph smaAike bodies. 



Stegomyia fasciata, CuUciomyia nebuhsa, Ochlerotatus irritans, O.nigri- 

 cephalus and Anojyheles costalis were used in feeding experiments in an 

 attempt to find the insect host of monkey malaria. No developmental 

 forms were however found in the mosquitos, nor did clean monkeys 

 become infected. Blood smears from three cases of human trypanoso- 

 miasis showed the presence of trypanosomes of the gamhieyise type. 

 T. pecorum was found in the blood of pigs from various districts. 

 Seven out of 22 dogs examined proved to be infected with a trypano- 

 some of the hrucei type. 



The follo\^^ng is a list of bloodsucking Diptera collected in Lagos 

 and other districts : — Anopheles costalis, A. umbrosus, A. mauritianus, 

 Culex consimilis, C. invidiosus, C. duftoni, C. univittatus, C. guiarti, 

 C. decens, C. thalassius, C. salisburiensis, C. insignis, C. tigripes, 

 C. fatigans, C. rima, C. qimsigelidus, C. grahami, C. albovirgalus, 

 C. annulions, Ochlerotatus nigricephalus, 0. caligiiiosus, 0. domesticus, 

 0. ochraceus, 0. irritans, 0. punctothoracis, 0. cumminsi, 0. argent eo- 

 pimctata, Stegomyia fasciata, S. luteocephala, S. africana, S. sugens, 

 S. siinpsoni, Cidiciomyia nebuJosa, Vranotaenia amiulata, U. bilineata 

 var. fraseri, Taeniorhytichus metallicus, T. aurites, T. annettii, Man- 

 sonioides africanus, M. uniformis, Banksinella punctocostalis, Glossina 

 palpalis, G. caliginea, Hippocentrum versicolor, Chrysops longicornis, 

 Tabanus secedens, T. obscurehirtus, T. socialis, T. besti, T. fasciatus, 

 Haematopota pertinens, H. lacessens, H. gracilis, H. vittatus, H. j)uniens, 

 T. albipalpus, T. billingtoni and T. socialis. Specimens of the flea, 

 Xenopsylla cJieopis, were found on rats caught in Lagos and the following 

 ticks were obtained : — Amblyomma variegatum, Hyalomma aegyptium, 

 Margaropus (Boophilus) anmdatu6 and Haemapihysalis leachi. 



Stkickland (C). Certain Observations in the Epidemiology of Malarial 



Fever in the Malay Peninsula. — Agric. Bull, Fed. Malay Slates, 



Kuala Lumpur, iv, no. 3, December 1915, pp. 62-68. 



Observations on the occurrence of malaria in the Malay Peninsula 



have led the author to put forward the following hypothesis : — 



Opened-up land in the hills and mountains is malarious because the 



