CANTHOCAMPTUS. 205 



Cyclops minutus, 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. 



MoNOCTJLUS MINUTUS, Gmelin, Linn. Syst. Nat., edit. 13tb, i, 2997, 

 No. 11. 



— Fetbricius, Ent. Syst., ii, 499, No. 45. 



— Manuel, Encyc. meth., vii, 719, t. 267, f. 2-6. 

 MoNOCULUS STAPHYLiNus, Jumie, 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, Pritchurd, Microscop. Cab., t. 9, f. 5. 

 Eichlwrn, Beyt. zur Naturg., 53, t. 5, f. k, l (adidt); t. 3, i.p (young). 

 Philos. Trans., No. 288. 

 Naturforsclier, Stuck vii, 101. 



Amymone satyba and baccha, &c., Midler, Entomost.,42, t. 2 (young). 

 Der Satyr, KoJders, Naturforsclier, x, 103, t. 2, f. 10 (young). 



— Pritchard, Micros. Cab., t. 8, f. 2. 



Cyclopsina staphylinus, M. Edwards, Hist. Nat. Crust., iii, 428. 

 Canthocahpus staphylinus, Baird, Trans. Berw. Nat. Club, ii, 



154, 1843. 

 Nauplius minutus, P/iilij)2)i,'Wiegm. andErichs. Arcliiv, 1843, p. 69. 

 Doris minuta, Koc//, 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 fom-tli 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 staplujlinus from this circum- 

 stance, objecting to the name oi minutus, by which Miiller 

 originally designated it, as, he says, we may possibly find 

 still smaller species. I have, however, retained the name 

 which Midler 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. 



