170 



Felt (E. P.). Thirty-flrst Report of the State Entomologist on 

 Injurious and Otiier Insects of tlie State of New York, 1915. — 

 New York State Mas. Bull, Albany, no. 186, 1st June 1916, 

 pp. 15-88, 13 plates, 22 tables. [Received 1st September 1916.] 



Mosquito investigations were carried out in the neighbourhood of 

 Sodus Bay, where a large swampy area in the immediate vicinity of 

 the village provided a breeding place for large numbers of mosquitos. 

 Anopheles 'punctifennis, Say, occurred in small numbers in June, 

 July and August, the larvae being found most frequently in grassy 

 pools. Psorophora ciliata, F., was taken in July and August ; the 

 larvae of this species were predaceous on larvae of other mosquitos. 

 Ochlerotatus (Aedes) abfitchi, Felt, bred abundantly in open, grassy pools, 

 in association udth 0. (A.) aurifer, Coq. Larvae of 0. {A.) canadensis, 

 Theo., were taken in stagnant water near the village. 0. (A.) siih- 

 cantmis, Felt, appeared in small numbers. 0. {A.) sylvestris, Theo., 

 was obtained between June and August, the larvae being very abundant 

 after heavy rains. 0. {A.) impiger, Walk., bred in small temporary 

 woodland or swamp pools in association with 0. canadensis. It did 

 not appear to be troublesome, thus differing from another woodland 

 form, O. {A.) trivittatus, Coq., which was reported to be a persistent 

 biter. 0. {A.) triseriatus, Say, was found in tree-holes on a few occasions. 

 Cnlex pipiens, L., was common in stagnant water in barrels, etc., and 

 in one instance was found in a tree -hole with 0. triseriatus. C. restuans, 

 Walk., occurred in artificial collections of water, but in smaller numbers 

 than the preceding species. C. territans. Walk., was apparently 

 abundant and troublesome during the warm months ; the breeding 

 places were similar to those of C. restuans and C. pipiens. C. dyari, 

 Coq., was met with on one occasion only. Adults of Taeniwhynchus 

 (Mansonia) perturbans, Walk., were observed between 14th June and 

 30th August. The larvae were associated with the water plants, 

 Typlia latifolia and Docodon verticillatus, from which they derived 

 their air supply. 



The follo\nng recommendations were made for controlling mosquitos 

 in this region : — (1) burning sedge and cat-tail areas in winter and 

 cutting the same at the end of May ; (2) filling-in small permanent 

 pools in the residential section ; (3) using heavy fuel oil on the breeding 

 places. 



Garden (G.). Report by the Senior Veterinary Officer. — Ann. Rept. 

 Dept. Agric. Nyasaland for the Year ended 31st March 1916, 

 Zomba, 30th June 1916, pp. 17-18. [Received 4th September 

 1916.] 



Sporadic outbreaks of trypanosomiasis among cattle occurred in 

 the Zomba, BlantjTC and Mlanje districts, though only the last-named 

 is likely to prove a permanent centre of infection. Cases of the disease 

 were also met with in the Fort Johnston district and at Chiromo. 

 Tick-borne diseases showed a considerable decrease in prevalence ; 

 cases occurred in the Zomba and Blantyre areas, and in outlying parts 

 of the Mlanje district in which facilities for dipping were wanting. 

 In areas in which dipping was regularly carried out, a marked diminu- 

 tion in the number of Stamoxys and other biting flies was observed. 



