63 



Ochlerotatus (which is subdivided into the groups, Finlaya, Diceromyia, 

 and OcJilerotatus, s. str.), Aecles and Skusea. OcJilerotatus, s. str., 

 consists of a heterogeneous number of species amongst which the sub- 

 divisions, Ochlerotatus, Ecculex and Aedimorjjhus may be distinguished. 

 The genus Culex, sens, lat., is divided into the subgenera Culex, Lopho- 

 ceratomyia, and Micraedes. 



The new species described inckide : — Armigeres durhami and 

 A. maiae from the Malay States, OcJderotaius [Finlaya) koreicus from 

 Korea, 0. (F.) fulgens and 0. {Diceromyia) adersi from Zanzibar, 

 Aedes ceylonicus and A. yerhuryi from Ceylon, and A. leicesteri from 

 the Malay States. 



MacDonald (A.). Notes on Blood-sucking Flies in Grenada. — Bull. 

 Entom. Research, London, vii, no. 3, January 1917, pp. 259-264, 

 2 plates. 



Of the mosquitos in Grenada, the only Anopheline is Anopheles 

 argyrotarsis, R. D., a recognised malaria-carrier, which has a per- 

 manent habitat in the shallow moist flats in the neighbourhood of 

 lagoons and estuarine swamps round the island. Most of these are 

 remote from human habitations and, as breeding places, should be 

 aboKshed at little cost. The larvae of this mosquito prefer pools on which 

 the Sim will shine most of the day and may be found, tangled in algae, 

 more frequently on the shaded side of a sun-heated pool. They are also 

 found in temporary breeding places such as wayside gutters, hoof-marks, 

 pig wallows, trenches and flats in grass land throughout the island in 

 close proximity to human residences. Stegomyiafasciata, F., is common 

 in and about the town of S. George's, but is not so numerous in the 

 country districts. It was never found in empty cacao pods, the common 

 breeding place of Limatus durhami, and only occasionally in rock-holes 

 and once in a mid pine associated with Wyeomyia jjertinens. The 

 larvae are devoured by the larvae of Megarhinus in captivity, and there- 

 fore if Sfegomyia eggs are laid in tree-holes and wild pines frequented 

 by Megarhinus, the larvae will probably have little chance of reaching 

 maturity. Culex fatigans is found in wayside pools and ditches, 

 especially if they are foul. Filariasis in an acute form is unknown in 

 Grenada. Several patients with morbid conditions diagnosed as 

 filariasis may have acquired the infection elsewhere. Limatus dur- 

 hami, probably the most ubiquitous mosquito in Grenada, occurs at 

 elevations of 400 feet up to 2,300 feet. Its larvae are foimd in old 

 cacao pods, in fallen palm leaf-petioles and in the flower spathes of 

 palms. The adult in nature bites in the day-time. Haemagogus 

 splendens. Will, is well distributed throughout the wooded parts of the 

 island, except near the sea. One larva was obtained from a tree-hole. 

 The avocado or alhgator pear [Persea gratissima) most commonly 

 provides holes in which mosquito larvae may be found. Wyeomyia 

 grenadenis, Edw., comes into houses after dark, as does also W. -perti- 

 nens. Will., which breeds in tree-holes and in wild pines. Culex 

 similis, Theo., Deinocerites cancer, Theo., Janthinosoma posticata, 

 Wied., and Cidex inflictus, Theo., were found in roadside gutters. 

 The last-named species may be caught in houses after dark and prob- 

 ably breeds in tree-holes and wild pines. Janthinosoma neoapicalis, 

 Theo., was found associated with Anopheles argyrotursis, as abo was 



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