~ liUmsil KNTOMOST!! A > 



that a person ignorant of the ////Y//;//V////.V \vould not fail 

 at first sight to call them so ; and the very singular phe- 

 nomenon of annulose animals being so covered with a 

 shell, has supplied to Milller the name of Entomostracon, 

 a term derived from two Greek words signifying "an 

 insect with a shell." 



Previous to the appearance of Midler's work, the feu 

 species which were known were arranged under one genus, 

 Monoculus ; and they were so called from their possessing, 

 or appearing to possess, only one eye. Schceffcr proposed 

 the name llrat/c/ii/xxl*'* for them, from their feet possessing 

 branchial appendages; and M filler says he would have pre- 

 ferred this name to that of Monoculus, were it not that 

 several genera wanted these organs. The genera, ho\ve\ er, 

 which he mentions, are the Nauplius and Amymone, and 

 the Cy there. The two former are only the imperfect young 

 of the genus Cyclops, and the latter has branchial ap- 

 pendages attached to the jaws. These facts, however, 

 he was not aware. of, and therefore he preferred to either 

 of the above names that of Entomostraca ; a name which 

 has been retained by almost all succeeding authors. 



We find several of these little creatures figured by 

 some of the earlier writers on natural history, and more 

 especially by the microscopical observers of the day. 

 Swammerdam, Rcdi, Leeuwenhoek, Tremblcy, Baker, 

 Frisch, and .loblot have given figures at least, and some of 

 them descriptions, of several species, while Schoeffer 

 has written three separate memoirs upon three different 

 genera, with minute details, and many illustrative figures. 

 Linnaeus in 1758 arranged all that were then known 

 under one genus, Monoculus, except two ; and Geoffrey, 

 Strom, Goeze, Ilerbst, and DC Geer soon afterwards 

 added to the number. It is to the celebrated Danish 

 naturalist, Otho lYedericus Milller, however, that we 

 are most indebted. To him we owe the collecting 

 i he \ iinous species already made known into one 



* MiilltT. 



