3O8 ENTOMOLOGICAL NEWS. [J u ty> '9 



tions; more usually they are on the next page or elsewhere 

 and it becomes necessary for the user to refer from page to 

 page, in order that he may comprehend the figures. This 

 promptly results in fatigue of the eyes with consequent loss of 

 time, confusion of the intellect and probable profanity. 



In order to avoid these things the principal terms, etc., have 

 been written directly upon the accompanying plates and it is 

 believed that the arrangement will be found convenient and 

 useful. 



It will be seen by reference to the text, that the terms ap- 

 plied to each principal part of the anatomy, have been arranged 

 in alphabetical order, beginning with those of the head, 

 those of the thorax, abdomen, legs and wings following in the 

 order named. 



It seems deplorable that there should be in general use sev- 

 eral names for any one part. It is difficult to find unoccupied 

 corners enough in one's memory to accommodate the single 

 terms, to say nothing of those regions having from 4 to 6 

 names. 



For example, those parts known variously as the Calypters, 

 Tegulae, Squamulae, Alulae, etc., ad nauseum, illustrate what 

 is meant. 



The chief end of a scientific nomenclature as the writer un- 

 derstands it, is to preserve us from this very confusion and 

 multiplicity of terms ; and if this end be not attained, then why 

 not return to vulgarisms? We should then at least gain an 

 inkling of what was meant. 



In compiling this list of terms an effort has been made to 

 include therein, not only the names of the bristles and bristle- 

 bearing surfaces of the anatomy, but also those other terms, 

 which are most often mentioned in descriptions of the various 

 writers on Dipterology; hoping thereby to extend the scope of 

 its utility. 



It will also be seen that one, large species, of common occur- 

 rence and wide distribution, has been used wherever possible 

 in the illustrations, for the purpose of allowing a comparison 

 of the plates with the actual organism; which arrangement 

 should prove of value. 



