Calypterntae and Acalypterctiae, Calypta and Cahiptrn. 93.^. 



his failure in discovcring a genoral principlc of correlation bctweon 

 thoso Organs, liis siiggostions are iiisti'iictive and wortliy of attention 

 (Rocherclios anatoniifjnes otc. snr les Dipteres; Mem. Matheni, des 

 savants etrangors, Vol. XI, p. 190— 11)1, 1851). Lately Weinland 

 (ISOU) likewisc considercd the post-alar meinbrano as a part of 

 Die wing. 



A grcat deal ren)ains to ho done in tliat diroction, and the prin- 

 ripal pnrposo of my „littlo papor" of ls9(; was to call attention to 

 the necossity of a snitable terminology for that purpose. ') 



I introdneod tliis matter for the tirst lime in my papor: „On the 

 characters of the three divisions" etc. (Bcrl. E. Z. 1892, p. 42S, foot- 

 note), where I said „I call antitcgula what is nsnally called nppei- 

 tcquln^ hnt which has no name, and is genorally overlooked, when 

 these is no lovvor tcgnla prescnt" otc. It was thon that I worked 

 up an historical snrvey of the terms nsod in tliat connection, and 

 foiind that squamn was the oldcst, and tlie most convcnient term 

 for genoral adoption, bat I did not pnblish the result tili four years 

 later in my article: „Notice on the terms tegida, anVücgida" etc. 

 (1890), and T statod at the end of it.- ,,The present paper is the rc- 

 snlt of a compilation, which I made in 1891, bcfore introdncing the 

 term anthegnla; I publisli it in tho hopc of saving some labonr to 

 thoso who may be interested in tho samc snbject" (Berl. F]nt. Z. 1890, 

 p. 288\ In the samo paper, 1 explained 1. c. p. 287, how I came to 

 use the term tcgnla. adopted by Loew, against my inclination 

 which wns for sqnama (this disinclination to use tegida I had already 

 expressed, as early as 18G2, in a footnoto in the Mon. N.-Am. 

 Dipt. I, p. XIV, 18(32). I addod at the sanie time that, nntil my 

 rccommondation of squama and anfi.^qitama vvas genorally adopted, 

 I would use tegida and antitegnla, as I had done beforo. Thoso, 

 who do not like the term antisquaina-) may use anterior sqnama 

 instead, which, according to my opinion is prcferable to the designation 

 of superior sqnama. 



1) As an instance of the iieglect of this groiip of characters b}' 

 diptcrologists. I wouUl call attention to the anterior sqitania (anti- 

 squama) of the Bomhylina and Anthracina. As far as I know, it 

 has never been mentioned in descriptions, and yet it has a considerable 

 dovelopment, especially in some species of Antlirax, where it is 

 larger than the asillary lobe (allda Lw ). 



-) The combination of anti, a Greek preposition, witli words that 

 are not Greok, is consecratcd by general usage of most European lan- 

 gnages, as in an tisl aver^', antisocial, antifebrile, antisabba- 

 tarian otc. For this reason the criticism of Mik (Wien, E. Z. 1897, 

 p. 4y) that antisquama is a vox hybrida is rather futile. 



