Brady and Crosskey — Notes on Fossil Ostracoda. 63 



X Gy there limicola (Norman), Portland, Saco. 



X „ globulifera (Brady), Saxicava Sand, Montreal. 



„ Zo^flwe, no V. sp., Montreal; Dr. D. 



„ cuspidata, nov. sp., Saco, Maine. Rare. 

 X ,, dunelmensis (Norman), Saco, Portland. 



X Cytheridea papulosa (Bosquet), Portland; Saco; Saxicava Sand, Mon- 

 treal; Dr. D. 

 X „ punctillata (Brady), Saxicava Sand, Montreal. 



X „ cornea (Brady and Eobertson), Saco. Rare. 



X „ Sorbyana (Jones), Saco ; Portland ; Saxicava Sand, Montreal. 



Abundant. 



„ Williamsoniana ? (Bosquet), Saco. Rare. 

 X Hucythere argus (Sars), Dr. D. Rare. 

 X Loxoconcha granulata (Sars), Portland. 

 X Xestoleberis depressa (Sars), Portland. Rare. 

 X Gytherura nigrescens (Baird), Portland. Rare. 

 X „ Sarsii (Brady), Portland. Rare. 



„ cristata, nov. sp., Portland. 

 X „ striata (Sars), Portland. Rare. 



„ granulosa, nov, sp., Portland. Rare. 

 X ,, undata, var., Portland. 



X ,, i2o5«r^sow« (Brady), Saxicava Sand, Montreal; Dr. D. 



X Cytheropteron latissimum (Norman), Portland, Saco. 



,, complanatum, nov. sp., Montreal, Saco. 

 X „ inflatum (B., C, and R., MS.), Montreal, Lewiston. Rare. 



X „ angulatum (B., C., and R., MS.), Montreal. Rare. 



X „ nodosum (Brady), Portland. Rare. 



X Scleroehilus eontortus (Norman), Portland, Lewiston. 

 X Faradoxostoma variabile (Baird), Portland. 



X Species marked thus occur living in the British seas. 



Species marked thus occur in British Post-Tertiary Clays. 



OytJiere MacCJiesneyi, nov. sp., Plate II., Figs. 1, 2. — Carapace as 

 seen from the side compressed, subreniform, higlier in front than 

 behind, greatest height situated much in front of the middle, and 

 equal to about half the length ; anterior extremity boldly and evenly 

 rounded, posterior much narrower and obliquely rounded; superior 

 margins straight, sloping from before backwards and obtusely angular 

 at each extremity ; inferior deeply sinuated in the middle ; seen 

 from above, ovate, widest in the middle, width rather less than the 

 height, sides subparallel, subacuminate in front, rounded behind. 

 Shell rather thin and fragile ; surface of the valves closely set with 

 small pitted impressions which have a sub-concentric arrangement, 

 and on the ventral surface coalesce into longitudinal furrows. 

 Length, l-50th of an inch. 



This is unlike every other published species with which we are 

 acquainted, and has something of the general aspect of a Loxoconcha, 

 from which it is, however, quite distinct. We have pleasure in 

 inscribing it to our esteemed friend Professor MacChesney, of the 

 University of Chicago. Several specimens of this species occurred 

 in gatherings from Montreal and Saco. 



Cythere Logani, nov. sp., Plate IT., Figs 8, 9. — Carapace tumid ; 

 seen from the side subquadrate, greatest height situated in front, and 

 equal to rather more than half the length ; anterior extremity well 

 rounded, posterior obliquely subtruncate, emarginate in the middle, 

 superior margin straight sloping backwards, angulated in front, 



