84 



E. OSTEN SACKEN. 



This species is recognizably described, though not properly named by 

 Mr. Schauf'uss (Numquam otiosus, vol. ii.). 'I'he name suggested for it 

 by Mr. Crotch (Check List, p. 58), is likewise inadmissible, not only be- 

 cause he gives no reason for its adoption, and because that kind of list 

 is an improper place for changes in nomenclature, but for the still 

 stronger reason, that it tends to perpetuate in science the memory of 

 the political venom which inspired the name given by Mr. Schaufuss. 

 I cannot express myself too strongly on the necessity of keeping our 

 scientific nomenclature free from all personal, political or religious 

 prejudices or expressions of opinion. Such use of scientific pubttca- 

 tiou, for intruding upon students of natural history irrelevant views re- 

 specting subjects, which are not comprised within the domain of their 

 researches, must be discountenanced. 



Description of the larva of PL.EOCOMA, Lee. 

 BY BAllON R. OSTEN SACKEN. 



The larva, sent for examination, is fresh from a recent moult. Some 

 parts of the head, especially the parts of the mouth, are still covered by 

 the old skin ; exuviae of the tracheal tubes protrude on both sides from 

 the thoracic stigmata. I mention this in advance, in order to introduce 

 a remarkable circumstance to be mentioned below. 



Larva (fig. 1) of the usual lamellicornian type, fixt, soft, whitish 

 curved, about 50 millim. long. 



Head (fig. 2) rounded, yellowish-red, with the usual inverted Y- 

 shaped impression in the middle ; the occiput is longitudinally wrinkled ; 

 the front, preceding the epistoma, shows iiTCgular transverse wrinkles; 

 the space between front and vertex, especially on the sides of the head. 



