AFRICAN SPECIES OF ANOPHELES 249 



Anopheles (Pyretophorus) costalis, Loew. (Plate XXXIX, fig. 1.) 

 Palpi with two white bands, and yellowish white apices ; a variation 

 is often seen in the band at the apex, which may be divided, the 

 palp then appearing to have four bands. Thorax brown with a dusky 

 median line, and when denuded of scales with five lines. Abdomen 

 black with long golden hairs. Legs with femora and tibiae brown, spot- 

 ted with white ; the tarsal joints are banded with yellow, especially 

 in the fore legs. Costa with four large and two small black spots, 

 the two median ones the longest. This species is very widely dis- 

 tributed in Africa, as well as in Madagascar and Mauritius ; it is a 

 natural carrier of the parasites of malaria. The larva has branched 

 frontal hairs ; the antenna is without a lateral hair or plume on its 

 shaft ; the palmate hairs are present from the second to the seventh 

 segments, each leaflet being filamentous. The larvae are commonly 

 found in swampy water, in roadside puddles and in foul pools about 

 African houses. 



Anopheles costalis shows considerable variation in its markings, and 

 the late Dr. Donitz was of the opinion that Theobald's identification 

 of the species is erroneous, and that it is probably A. cinereus, Theo- 

 bald ; he therefore suggested the name gracilis. 



Anopheles (Feltinella) pattidopalpi, Theobald. Palpi with two yel- 

 low bands, one of which is apical. Thorax ash-grey with a median 

 dark line. Abdomen brown with golden hairs. Legs brown, and 

 unhanded. Costa with two pale spots. The genus Feltinella was 

 created on the character of the male genitalia, the basal lobe, according 

 to Theobald, being divided into two segments. Edwards states that ' the 

 type specimen is merely broken.' This species, of which only the male 

 is known, is found in Sierra Leone. 



Anopheles (Myzomyia) nili, Theobald. Palpi dark, with one small 

 apical band. Thorax fawn coloured. Abdomen black. Legs brown, 

 and unhanded. Costa black, with three yellow spots. From the Soudan, 

 North and South Nigeria, and Togo Land. 



Anopheles (Myzomyia} longipalpis, Theobald. Palpi with three 

 narrow white bands, and white apices. Thorax cinerous. Abdomen 

 black. Legs black, hind tarsi and metatarsi with apical and basal yel- 

 low bands. Costa dark with four almost equal pale yellow spots. 

 From British East Africa, and Nyasaland. 



Anopheles (Myzomyia] rhodesiensis, Theobald. Palpi dark brown 

 with three nairow yellow apical bands. Thorax reddish brown. Ab- 

 domen brown. Legs dark brown, long and thin, and unhanded., 

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