1913.1 NATURAL SCIENCES OF PHILADELPHIA. 



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and was found in great numbers at Hodge's Bay and along the 

 shores at Willoughby Bay, and also commonly at High Point. 



Diplothecanthus antillarum (Cott.). 



Clypeaster antillarum Cott., 1875.— Cotteau, loc. cit., p. 15, pi. II, figs. 1-3. 

 Echinanthus antillarum (Cott.).— Gregory, loc. cit., p. 295. 

 Not Echinanthus antillarum Cott., 1875.— Cotteau, loc. cit., p. 2b, pi. IV, 

 figs. 9-12. 

 Less common than D. concavus (Cott.), this large species was 

 found at Willoughby Bay only. 



Sismondia antillarum Cott. 



Sismondia antillarum Cott., 1875.— Cotteau, loc. cit., p. 17, pi. Ill, figs. 1-4. 



A small species found only at Willoughby Bay. 



Schizaster clevei Cott. 



Schizaster clevei Cott., 1875.— Cotteau, loc. cit., p. 29, pi. V, figs. 7, 8. 

 A rather small specimen which probably belongs to this species 

 was collected at Willoughby Bay. It may prove to be new. 



Echinolampas anguillae Cott. 



Echinolampas anguillce Cott., 1875.— Cotteau, loc. cit., p. 24, pi. IV, figs. .5-8. 

 A single example of this species was collected at Willoughby Bay. 

 Metalia sp. indet. 



Fragments of two additional species, one probably belonging to 

 the genus Metalia and the other to Ewpatagus, were collected, some at 

 Hodge's Point and some at Willoughby Bay. While several frag- 

 ments of each species were collected, none are in sufficiently perfect 

 condition to describe. One specimen from Hodge's Bay is a frag- 

 ment of a very large species, but somewhat less than one-third of the 

 test is represented. 

 Pecten (.ffiquipecten) oxygonum Sowb. 



Pecten oxygonum Sowb.— Quart. Jour. Geol. Soc. London, VI, 1849, p. 52. 

 This is the species which Gabb has determined as belonging to this 

 unfigured species of Sowerby; the specimens collected agree perfectly 

 with those determined by Gabb as belonging to this species in his 

 specimens from Santo Domingo (now in the A. N. S. P. collection). 

 It was collected at Hodge's Bay. 

 Pecten oxygonum optimum B. and P. 



Pecten oxygonum optimum B. and P.— Brown and Pilsbry, Proc. A. N. S. P., 



1912, p. 511, pi. XXIII (numbered XXIV), fig. 2. 

 Pecten paranensis d 'Orb.— Gabb., Journ. A. N. S. P., VIII, p. 347, pi. 45, 

 fig. 24. Not of d'Orbigny, Voy. Amer. Merid. Palseont, p. 132. 



This variety of P. oxygonum^ described in 'Tauna of the Gatun 

 Formation, Isthmus of Panama, II," a year ago, is based upon a 

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