ON SOME FRESH AND BRACKISH WATER ENTOMOSTRACA 163 



lavis (Miiller) were both obtained in September only. Cypris 

 incongruens, Ramdohr, occurred in all the three gatherings, 

 but was most frequent in those collected in September and 

 May. Cypris virens (Jurine) was also obtained in the three 

 gatherings, but was scarce in all of them. The prettily 

 coloured Cyprinotus prasinns (Fischer) was common in 

 September, and was also taken in May. Cypridopsis 

 aculeata (Costa), and villosa (Jurine), were obtained in 

 September only ; the first in abundance, but the other 

 was very rare. Ilyocypris biplicata (Koch) was observed 

 both in September and in May. The form of Ilyocypris 

 which I ascribe to this species, and which is moderately 

 common in some of the pools on the Links, possesses the 

 transverse bisulcations of the shell, but it is not tuberculated. 

 Candona Candida was common in February, when the ice 

 with which some of the pools were covered had to be 

 broken to permit the hand -net to be used. The same 

 species was also observed in the other gatherings, and it 

 is worthy of note that in neither of them were any adult 

 males observed. In the gathering collected in September 

 I observed one or two specimens of a Candona which I have 

 for the present ascribed to Candona lactea (Baird). These 

 specimens, seen from above as well as laterally, present a 

 more cylindrical shape and are more equally curved at the 

 ends than is usual in specimens of Candona Candida of 

 similar size, but in these respects they agree very well with 

 Candona lactea. The diminutive and curious Limnicythere 

 inopinata (Baird) was moderately frequent in the pools in 

 September, but it has not been observed in the other two 

 gatherings. 



It may be mentioned in closing that the two species of 

 Cypris and also the Cyprinotus recorded above are additions 

 to the Entomostracan fauna of Aberdeenshire, and further, 

 that I have, as in my last paper, to note the continued 

 scarcity of species of Candona. Perhaps when a more 

 systematic and thorough study of the Entomostraca of the 

 county is taken in hand, the genus Candona may not be so 

 poorly represented as it appears to be at present. 



