Anophelinae. 17 



The pupa. A pair of large branching hairs spring from the 

 posterior of the first abdominal segment ; a pair of smaller 

 branched hairs on the third and fourth segments. The second 

 segment without these hairs (Plate 2, Fig. 4). 



According to Dr. Low, the larval stage lasts from fifteen to 

 eighteen days and the pupal stage two days. 



Economic importance. The adults bite by night and day. Dr. 

 Low describes how great numbers came and bit him about midday 

 when sitting under a mango tree in British Guiana. Dr. St. 

 George Gray also wrote me that " when disturbed it will bite at 

 any time of the day or night." 



Not only does this species bite somewhat severely, but it acts 

 as the intermediate host for the parasite of malignant malaria,* 

 and also for the development of Filaria nocturna. On the other 

 hand, it is inefficient for Filaria demarquaii. 



5. CYCLOLEPPTEROX GRABHAMII. Theobald. 

 (Grabham's Anopheles.) 



(Mono. Culicid. I., p. 205, 1901, and II., p. 312, 1901, and 

 III., p. 56, 1903.) 



General appearance. Head black, with upright forked scales, 

 white in the middle, black at the sides. Palpi all black, densely 

 scaled. Thorax slaty-grey, with deep brown mottlings and two 

 parallel brown lines in front. Two of the brown marks form 

 more or less distinct eye-like spots, with hair-like golden curved 

 scales. 



Abdomen steely black, with curved golden hairs, brown hairs 

 at the sides. Legs brown, femora and tibiae mottled with creamy 

 scales ; metatarsi and first two tarsi with narrow pale basal 

 bands. Wings with dark grey and black scales, creamy ones on 

 the third vein, a few on the lower branch of the first fork cell, 

 on both branches of the second, many on the fifth and its 

 branches, the sixth all creamy scaled except for a black spot at 

 the base and near the apex; large black inflated scales form 

 spots on the wing field. 



Length. 5 mm. 



Geographical distribution. At present this species is only 

 known in Jamaica and in Cuba. Dr. Grabham says he occasion- 



* British Medical Journal, 25. 1. 02. 



