330 History of British Entomostraca. 
5. Cyclops Stromii Plate IX. Fig. 23-25. Nova species Specific Charac- 
ter. An tennis curtis ; capite rostrato ; manibus unguiculatis, cauda biloba, 
setis duobus brevibus instructa ; ovario externo unico. 
Habitat. Shore at Cockburnspath, Berwick bay, &c. 
Description. Body and tail, as in the others, consist of ten seg- 
ments, gradually tapering to extremity without any very decided 
difference between tail and body. First segment the largest, fur- 
nished with a conical beak last segment terminating in two lobes, 
which give issue to two setae, much shorter than in the preceding 
species, being scarcely half the length of the body. A ntennae of about 
eight articulations ; at junction of fifth with sixth, having a late- 
ral ring. In male (Fig. 25) the swelling and hinge-joint are as in 
preceding species. All the articulations of the antennae throw for- 
ward one or more short setae. Antennules, as in the preceding 
species, of two articulations, the second being terminated by about four 
pretty long setae. Mandibles were not seen ; hands, like those of 
C. minutus, consist of two articulations, and a pretty strong hook, 
which points upwards. First or thoracic pair of feet have the ex- 
ternal or superior stalk much smaller and shorter than the other, 
and is divided into three joints, the last of which is terminated by 
three pretty strong setae or small hooks. The internal or in- 
ferior is much the longer of the two, and consists of two articula- 
tions, the first being very long in proportion to the second, which 
is exceedingly short and terminated by a curved hook. The abdo- 
minal feet are exactly the same as in last species and the fulcra 
or supports which I could not examine accurately, seemed to be also 
similar to those of the chelifer. I have named this species after 
Strom, who has given a description of a species of Cyclops in the 
Acta Hafniae, 9th vol. which has some resemblance to this, as 
translated by Muller in his Entomostraca, under the name of C. 
brevicornis. * 
6. Cyclops furcatus. Plate IX. Fig. 26-28. Nova species Specific Cha- 
* In the edition of the Acta Hafniae in the British Museum, the figures which 
Strom gives of the brevicornis are unfortunately awanting. In Muller's de- 
scription of the brevicornis, which he professes to take from Strom, he says the 
tail setae are very short, " setis caudae brevissimis," while Strom in his descrip- 
tion says they are very long, " setis caudse binis longissimis" ! In my paper 
in the Transactions of the Berwickshire Naturalists' Club, I have quoted the 
species described above as the C. brevicornis, taking the description as given 
by Muller, not having at that time seen the Acta Hafniae and not being aware 
of the discrepancy which exists between the two descriptions. Vide Strom's 
paper in " Det Kiobenhavnske Selskabs skrivter," 9th vol. p. 590,1765. 
