THE ENTOMOSTRACA OF EPPING FOREST. 321 Cypris ? reticulata, Zaddach.—C. tessellata (in part), Brady (10). Only the immature "tessellata" form; from Wanstead Park have hitherto been seen, so that it is still a little uncertain whether they should be referred to C. reticulata or not. Cypris obliqua, Brady (10)., In the account of the Wanstead Park Entomostraca (82) his species was unfortunately included with C. fuscata. Herpetocypris reptans, Baird.—Caudana reptans, Baird (2); Cypris reptans, Brady (10) ; Erpetocypris reptans, Brady and Norman (21, Part I.), Scourfield (82). Herpetocypris strigata, 0. F. Muller.—Cypris ornata, Brady (14); Erpetocypris strigata, Brady and Norman (21, Part I.) The localities in which this species has been found are:—Ponds in the fields between High Beach and Waltham, ditch leading into Connaught Water, pond at Fairmead, duck- pond near the "Volunteer," and Gilbert's Slade, Snaresbrook. Herpetocypris tumefacta, Brady and Robertson.—Cypris tumefacta, B. and R. (21a) ; Erpetocypris tumefacta, B. and N. (21). The sole locality for this interesting species is a little brook near the entrance to Gilbert's Slade, Snaresbrook. Prionocypris serrata, Norman,—Caudata serrate, Norman (54); Cypris serrata, Brady (10); Erpetocypris serrata, Brady and Norman (21. Part I.) This species has been obtained from one of the reservoirs of the East London Waterworks at Tottenham. It does not appear in fable I. nor in the statement ot the relative abundance of the species, as it was only found on the occasion of the Club's visit to the Waterworks on 2nd July, 1898. Cypridopsis villosa, Jurine.— Cypris Westwoodii, Baird (2); Cypridopsis villosa, Brady (10). Two little duck-ponds at Sewardstone are the only stations where this has been found. Pionocypris vidua, O. F. Muller.— Cypris vidua and C. sella, Baird (2) ; Cypridopsis vidua, Brady (10), B. and N. (21, Part I.), Scourfield (82). Notodromas monacha, O. F. Muller.—Cypris monacha, Baird (2) ; Notodromas monachus, Brady (10); N. monacha, Scour- field (83). Occurs only at Wanstead Park so far as yet known. Ilyocypris gibba, Ramdohr.—Cypris gibba (in part), Brady (10). In one of the Golding's Hill Ponds a form has been seen which made some approach to I. biplicata Koch ( = I. bradii Sars), but it could not ke certainly identified as that species.