338 C. R. Osten Sacken: Cah/pteratae and Acalypteratae elc. 



Note IV. 



I leave to philologists the task of pronouncing lipon tlic correct- 

 ncss of the technical terms dcrived froni the Groek, and I subniit 

 to thein tlic foUowing suggestions: 



In the dictionaries accessil)le to nie, I find three Grcck words 

 dorivcd from the verb „I cover" (calypto): 



1. Calypter (covering), a snbstantive, the latinized plural of 



which would be calypteres, in analogy with hal toros. 



2. Calyptra (a Substantive, likewise meaning covering), witli 



the latinized plural calyptrae. 



3. Calyptos, calyptoii, adjective, meaning covcred, has no 



application in our case, because a squama. may be a 

 covering, bnt is not cover ed. Therefore R.-D.'s ca- 

 hfpta (plural) cannot be justified. 



Calyptron does not exists in Greek, and therefore the la- 

 tinized calyptrum (plural calyptra), proposed for use 

 in the article in the E. M. M., cannot, it seems to me, 

 be accepted. 

 The different ways of spelling the terms Calyptrata or Calyp- 

 terata may both be considered as correct, as they may be dcrived 

 either from calypter or calyptra (compare above). 

 In practice, they appeared in the following sequence: 



Rob.-Desvoidy (Myod. p. 20-22, 1830) has Calypte- 

 ratae, Calypterees. 



Macquart, Hist. Nat. etc. II, p. 354, 1835. Acalyptöres 

 (Acalypterae). 



Meigen, VII, p. 172, 1838. Calypterae Macq. — Aca- 

 lypterae Macq. 



Macquart, Dipt. Exot. II, 3, p. 26—27, 1843. Calyp- 

 terees (Calypteratae) and A calypterees; but on p. 173 

 of the same volume, Macquart has, inconsistcntly, 

 A c al y p t e r e s (Acalypterae). 



Several authors followed Meigen, in spelling Calypterae 

 and Acalypterae. So Walker, Ins, Brit. Dipt. II, 

 p. 2 (1853); Schiner (Fauna I, p. LXX, 1SC2) etc. — 

 Others authors followed the original spelling of R.-D. : 

 calypteratae. (So R. H. Meade.) 



