NOTES ON BLOOD-SUCKING FLTES IN GRENADA. 263 



Wycomyia perl ine its, Will., is also a gentle visitor of the after-dinner reading hour. 

 The tree-hole and Avild pine are its breeding places. 



Culex simiJis, Theo., Deinocerites cancer, Theo., Janthinosoma posticata, Wied., 

 and Culex uiflicfus, Theo., have been found in the same or similar roadside gutters. 

 The full-grown larvae of all readily hatched out. 



Culex inflkius has been caught also frequently in the house after dark. From the 

 distance of my residence from ]iools likely to harbour its larvae, and from the fact of 

 the only other evening visitors being tree-hole and wild pine breeders, it is possible 

 that C. inflict us may also breed in similar situations. 



Janthinosoma neoapicalis, Theo., is a liandsome insect and has a graceful larva, 

 with a long syphon tube. It is found in the same shallow waters in which Anopheles 

 argijrolarsis occurs, the two living freely together. The full-grown larvae hatch out 

 readilv, though the smaller ones may remain alive for many weeks in captivity 

 without growing or pupating. 



Culex anuulatus was found in a shallow well along with Anopheles arf/yrotarsis. 



Skgoniyia huscki, Coc{., was found in a collection of water in the petiole of a fallen 

 palm leaf in the Grand Etang forest, at an elevation of about 2,600 feet ; also in a 

 cacao-pod at the upper limits of cultivation. Pupae and well-grown larvae hatch 

 out readily in captivity, but the immature larvae remain for wrecks ^^^thout pupating. 



Larvae and pupae of another A'edes, not identified at the time of waiting,' and 

 probably a new species, were collected from a tree-hole and from a wild pine in 

 a cacao plantation. 



Mcgarrhinus haitiensis, D. <% K. The larvae and pupae have been found in wild 

 pines and in tree-holes. This beautifully coloured and lustrous mosquito occasionally 

 visits the house in the day-time, but has not been seen to approach people. 



Pupae and well-grown larvae liatch out in captivity, but smaller lai'\'ae have not 

 been successfully induced to grow. Even larvae of seemingly full size live for mouths 

 without pupating. I fed one large larva intermittently during nearly four months 

 on Steg&myia larvae. It would devour live larvae in a day and take about a week 

 to eat up about twelve more. It would then go for some weeks apparently without 

 food and repeat the same feat of consumption when supplied with more Stegomyia 

 lar\'ae. 



At first big and small Megarrhinus larvae seemed to live in peace with each other, 

 though even the small ones would voraciously attack by the head and suck Stegomyia 

 larvae as large as themselves. After submitting to a period of apparent starvation 

 a four-months- old larva, I placed two other Megarrhinus larvae in the bottle along 

 with it, one a small larva and the other almost as large as the old one. The smaller 

 one disappeared very soon, and next day the other was found dead yviih its head 

 mutilated. After that I dropped the ancient warrior into boiling water to preserve 

 him. 



These larvae probably were not those of Megarrhinus haitiensis, but of another 

 species, several specimens of which have been preserved but not yet identified. They 

 also were collected as laiA'^ae and pupae from a tree-hole and from wild pines. 



The large egg of Megarrhinus is interesting ; looking down into a tree-hole the 

 ova are seen floating on the surface of the water singly or, more commonly, several 

 are seen together aroimd the edge. 



