CRUSTACEANS 
Claus, and the name quoted by Miss Pratt is given in reliance not on 
Claus but on Brady. Now Dr. Schmeil is strongly disinclined to admit 
the identity of C. /ubbockii with C. isignis, thinking the former more likely 
to be a variety with fourteen-jointed antenne of C. bicuspidatus, to which 
he assigns the designation ‘ var. odessana, Schmankewitsch.’? 
Cyclops ewarti, Brady, is one of the few species of this genus which 
have strayed from inland waters into the sea. In lake Bassenthwaite 
‘only a few specimens of this species were taken in April and none were 
taken in June.’ Its first antenne are eleven-jointed and Dr. Brady 
remarks upon this, ‘ One is liable to look with suspicion on the validity 
of small species of Cyclops with eleven-jointed antenne, seeing that the 
possession of that number of joints is characteristic of one stage in the 
development of the seventeen-jointed forms. But we have in this case 
the swimming feet all perfectly developed and three-jointed, and no 
examples of any seventeen-jointed forms were found in the gathering.’ ® 
Cyclops affinis, Sars, ‘was taken in Bassenthwaite in April, 1897, and 
has not since been taken.’* The antennz are eleven-jointed. 
For Cyclops kaufmanni, Uljanin, Miss Pratt gives references to Brady, 
1878 and 1891, and remarks, ‘ This species, although very limited from 
all accounts in its distribution, was by far the most abundant species 
taken in April, 1898; in June it was rare’ in Bassenthwaite. Its 
antenne are ten-jointed. Schmeil is doubtful whether Brady’s C. kauf- 
mann be the same species as that so named by Uljanin, but he had 
apparently not seen Brady’s new figure of the species in 1891. 
Cyclops phaleratus, Koch, ‘was taken in Bassenthwaite in April, 
1898, when it was rather rare. No specimens were taken in June.’ * 
The first antenne are ten-jointed. Any doubt of this species being right- 
fully attributable to Koch is removed by an interesting feature in the 
species itself. Contrary to what is the case in all other members of the 
genus, in this one the oviducts penetrate far into the abdomen, and Koch, 
who was ignorant of their nature, so represents them in his figure.° 
Cyclops serrulatus, Fischer, is said to be the commonest species of the 
genus. The first antenne are twelve-jointed. ‘Specimens were only 
taken in Bassenthwaite in June.’ 
From the Cyclopide we now turn to the family of the Diaptomide. 
Diaptomus castor (Jurine) according to the often-quoted report was 
taken in lake Bassenthwaite not very abundantly in April and not at all 
in June." It should not be overlooked that Dr. Brady in 1891 modifies 
what he has to say of this species in 1878. 
Diaptomus gracilis, Sars, is reported from Bassenthwaite by Miss 
Pratt,’ and by Dr. Brady from Talkin Tarn and Tindale Tarn, Cumber- 
1 Bibl. Zool., vol. iv. p. 82 (1892). 
® Ann. Nat. Hist., ser. 7, vol. ii. p. 474. 
3 Nat. Hist. Trans. Northumberland, etc., vol. xi. pt. i. p. 87. 
* Ann. Nat. Hist., ser. 7, vol. ii. p. 474. 5 Loc. cit. p. 474. 
6 Schmeil, Bibl Zool, vol. iv. p. 171. 
7 Ann. Nat. Hist, ser. 7, vol. ii. p. 474. 
8 Loc. cit. p. 476. 9 Loc. cit. p. 476. 
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