CANTHOCAMPTTJS. 
205 
Cyclops minutus, j Baird, Trans. Berw. Nat. Club, i, 97, t. 2, f. 1, 
19, 20, and ii, 154 ; Mag. Zool. and Bot., i, 
326, t. 9, f.1-14. 
Monoculus minutus, Gmelin, Linn. Syst. Nat., edit. 13th, i, 2997, 
No. 11. 
— Fabricius , Ent. Syst., ii, 499, No. 45. 
— Manuel , Encyc. meth., vii, 719, t. 267, f. 2-6. 
Monoculus staphylinus, Jurme, Hist. Nat. Monoc., 74-84, t. 7, 
f. 1-19, 1820. 
Cyclops staphylinus, Desmarest, Cons. gen. Crust., 363, t. 53, f. 6. 
— Baird, Trans. Berw. Nat. Club, i. 97, t. 2, f. 1 
(adult) ; t. 2, f. 19, 20 (young). 
Small Cyclops or vaulter, Pritchard, Microscop. Cab., t. 9, f. 5. 
Fichhorn, Beyt. zur Naturg., 53, t. 5, f. k, l (adult) ; t. 3, f. p (young). 
Philos. Trans., No. 288. 
Naturforscher, Stuck vii, 101. 
Amymone satyra and baccha, &c., Muller , Entomost.,42, t. 2 (young) . 
Deb Satyr, Kohlers, Naturforscher, x, 103, t. 2, f. 10 (young). 
— Pritchard, Micros. Cab., t. 8, f. 2. 
Cyclopsina staphylinus, M.Fdwards, Hist. Nat. Crust., iii, 428. 
Canthocarpus staphylinus, Baird, Trans. Berw. Nat. Club, ii, 
154, 1843. 
Nauplius minutus, Philippi, Wiegra. and Erichs. Archiv, 1843, p. 69. 
Doris minuta, Koch, Deutsch. Crust., h. xxxv, t. 3, 1841. 
The thorax and abdomen are not distinctly separated 
from each other. They are composed of ten segments, 
which gradually diminish in size as they descend. The 
first consolidated with the head, is the largest, and the 
last one terminates in two short lobes, from which issue 
two long filaments, slightly serrated on their edges. At 
the junction of the fifth with the fourth articulation, the 
body is very moveable, and the animal frequently turns 
up the posterior extremity upon the anterior, in the man- 
ner of the kind of beetle called Staphylinus. Jurine has 
taken the trivial name of staphylinus from this circum- 
stance, objecting to the name of minutus , by which Muller 
originally designated it, as, he says, we may possibly find 
still smaller species. I have, however, retained the name 
which Muller bestowed, as he was the first author who 
gave any detailed description of it. The males (t. XXV, 
f. 4) are smaller than the females. 
