1910.] S. p. James : The Indian Anophelinne. 97 



In the genus Myzomijia : cidici fades, listoni, leptomeres 



and turkhudi. 

 In the genus Pyyeiophorus : jevponcnsis, pioiclulata, 



elegans, nigrifasciaUis and niirsei. 



I have examined many specimens of nearly all these species 

 and the following remarks contain the chief conclusions at which 

 I have arrived. (i) I have carefully examined specimens of 

 niaculipennis, Meigen, and hifurcatus, Ivinnseus, and taking them 

 as the types of Mr. Theobald's genus Anopheles^ I am unable to 

 place in this genus an}- Indian species at present known to me. 

 (2) I find that the distinguishing character of the genus Stetho- 

 myia, namely' , the presence of a few '' flat scales" on the head, is 

 not confined to the species placed by Mr. Theobald in that genus. 

 ^Ir. Theobald found that the original character upon which he 

 founded this genus (namel}', the character " mammilated prothora- 

 cic lobes ") was not distinctive, and now that the second character 

 has been found to be not distinctive the genus should be sunk. 

 Probably all the species now assigned to it would come in m}' new 

 genus Ncostethophcles. (3) The use of the shape of wing scales 

 as a means of distinguishing between the genera of this first large 

 group of anophelines appears to me to be open to the objection 

 that it must always be doubtful whether, for example, the wing 

 scales are " large and lanceolate " or whether they are " mostl}' 

 small, long and narrow, or slighth' lanceolate. " I find, however, 

 that this character is the only one by which the genera Anopheles 

 and Myzomyia can be separated, and that unless it is agreed to 

 sink the latter genus under the former we must accept it. The 

 wing scales of Anopheles niaculipennis are distinctl}^ longer and 

 broader than those of Myzomyia cuUcifacies and Myzomyia listoni, 

 but they are only \ery slightly longer and broader than those of 

 Myzomyia turkhudi. The wing scales of Anopheles hifurcatus are 

 not so long nor so broad as those of Myzomyia turkhudi. If the 

 character is regarded as of general application to all the genera 

 endless confusion ensues. As I do not place any Indian species 

 in the genus A nophelcs and as I neglect the character of the wing 

 scales for the grouping of the Indian species the subject need not 

 be further considered here, but it is very desirable to find a better 

 character for separating the genera Anopheles and Myzomyia. (4) 

 I believe that the Indian anophelines without scales on the abdo- 

 men can be arranged in groups based on characters much more 

 distinctive and easily recognized than those which Mr. Theobald 

 has chosen. 



For the arrangement of the species without scales on the 

 abdomen I retain two of Mr. Theobald's groups, namely, Myzomyia 

 and Pyrctophorus, and create two new grouj^s called respectively 

 Ncostethophcles and Patagiamyia. 



The following definitions include the characters by which the 

 four grou])S in which I arrange the i^ species without scales on the 

 abdomen may he identified and distinguished from one another. 



