203 



it pjasses indifferently to other animals. A third point concerns the 

 question whether the majority of Anophelines that have acquired 

 malaria from a human host remain — at the time when the sporozoites 

 have reached the salivary glands — -in the same neighbourhood. 



The opinion is expressed that animal protection against malaria 

 could only be effective if it was general and not limited to individual 

 families. 



Matheson (R.) & Shannon (R. C). New Mosquito Records and Notes 

 on the Habits of certain Species from Central New York. — Ann. 

 Ent. Soc. Anier., Columbus, Ohio, xv, no. 2, June 1922, pp. 157-163. 



Theobaldia {Culicella) dyari, Coq., is recorded from a small open 

 shelter erected near a deep pool in swampy land. Large numbers of 

 adults were taken during June and July, but on 4th September none 

 were found. According to Dyar, this species probably lays eggs singly 

 during the summer, and they hatch in the following spring with the 

 melting of the snows, there being only one generation a year. The 

 fact that only adults were found in the present collections indicates 

 either late maturing larvae or possibl}/ a second generation. The first 

 gravid females were obtained on 9th July. This mosquito evidently 

 does not bite man. One larva was obtained on 28th April of the 

 following year. 



Aedes canadensis, Theo., is one of the commonest mosquitos about 

 Ithaca. It is generally believed that there is only one generation a 

 year, the overwintering eggs hatching at irregular intervals during the 

 summer. In attempting to secure larvae of T. dyari, two artificial 

 pools were made in sphagnum- bogs on 1st July, and in these young 

 larvae of A. canadensis were found. On 18th July the larvae found 

 were almost mature. This undoubtedly indicates that eggs were laid 

 during mid-summer and hatched the same season. 



Observations were made on three closely-related species of Aedes, 

 all belonging to the group stimulans as classified by Dyar. In a pool 

 at an elevation of about 1,300 ft. a number of mature larvae and 

 pupae of A. stimtdans, Wlk., and A. excrucians, Wlk., were collected on 

 21st April, but no individuals of /I. /^cAz, F. & Y., were found. On 10th 

 May, at the same elevation, another pool of considerable size and depth 

 was found to contain an immense number of larvae and pupae of A. 

 fitchi, this being the only species present. These three species were 

 all vicious biters, and were most troublesome during the early spring 

 months and well on into July. 



Taeniorhynchus {Mansonia) perturbans, Wlk., is a mosquito of wide 

 distribution, but has only twice been recorded from New York State. 

 Large numbers were taken on 3rd-5th July on the shores of Lake 

 Ontario, which is surrounded by large swampy areas. This species 

 bites freely in the woodlands during the day and continues its attacks 

 at dark. 



Anopheles quadrimacidatus, Say, has always been considered common 

 about Ithaca, but although search was made in many pools, none of 

 this species was found, two adults only being obtained from houses 

 on the heights about a mile from the marshes. No case of malaria 

 was reported from Ithaca in the past season and there have been very 

 few for a number of years. Anopheles punctipennis. Say, is undoubtedly 

 the predominating Anopheline and was taken in large numbers wherever 

 collections were made. It was a troublesome biter throughout the 

 season. In the marshes, larvae occurred in numbers in a variety of 



