GEOGRAPHICAL AND GEOLOGICAL DISTRIBUTION. 9 



that this material is not in the British Museum. Later, in 1899, Doctor 

 Gregory visited Antigua (as well as Anguilla) and collected Echini 

 which are in the British Museum. 



Dr. A. P. Brown collected a number of fossil Echini in Antigua, in 

 1913, and his specimens are in the collections of the Philadelphia 

 Academy of Natural Sciences; his notes on the geology are published 

 in the Proceedings of that institution. Doctor Vaughan, in 1914, 

 visited Antigua and collected quite a large amount of material. Lam- 

 bert in 1915 published the results of Gergory's collecting, with some 

 additional material (from Anguilla). The above list of Echini from 

 Antigua is based on the Vaughan and Brown collections, which I have 

 studied, and in addition on Lambert's publication. 



All these species, except perhaps Anomalanthus gregoryi Lambert, 

 are supposed to come from the Antigua formation, Middle Oligocene. 



Anomalanthus gregoryi, having a different matrix from the other 

 species, as recorded by Lambert, may have come from a different bed 

 and horizon. 



GUADELOUPE. 



List of Fossil Echini occurring in the Island of Guadeloupe. 



* Clypeaster ambigenus (Lamarck). 

 1 Clypeaster meridanensis Michelin. 

 1 Echinoneus cyclostomus Leske. 

 1 Brissus brissus (Leske). 



1 (?) Lanieria lanieri (Cotteau). 



* Clypeaster parrae Desmoulins. 



* Clypeaster parvus Michelin. 

 3 Clypeaster duchassaingi Michelin. 



I have not seen any echinoid material from the island of Guadeloupe, 

 and the species indicated are taken from A. Agassiz's list of West Indian 

 Echini in the Blake report, from Cotteau's Spanish report, and from 

 Michelin's Monograph of Clypeastroids, 4 all as indicated in foot-notes. 



The occurrence of Lanieria lanieri in Guadeloupe is probably a 

 mistake, as the species is known otherwise only from the Cretaceous 

 of Cuba. The other species listed are probably all late Tertiary, 

 but A. Agassiz 5 is the only authority cited who gave a definite horizon 

 in recording the occurrence of the species. 6 



> A. Agassiz, 1883, Blake Echini. Mem. Mus. Comp. Zool. vol. 10, No. 1, pp. 88-93. 



' Cotteau, 1897, Spanish report, Bol. Com. Mapa Geol. Espana, vol. 22. 



* Michelin, 1861, Monographic Clypeastres fossiles, Mem. Soc. Geol. de France, ser. 2, vol. 7. 



« Desor, 1858, Synopsis des Echinides, p. 234, briefly describes Scutella michelini Desor, 

 which, he says, occurs fossil in Guadeloupe; and on p. 288 he describes Rhynchopygus guadelou- 

 pensis Desor, which, he says, occurs in the Quaternary of Guadeloupe. 



5 Mr. A. Agassiz (1883, Blake Echini), in his tables of geographical and geological distribution 

 of West Indian Echini, pp. 88-91, lists the following species which are apparently nomina nuda 

 or synonyms: Sismondia alia Cott. Eocene, St. Barts; Clypeaster incurvatus Desm., Pliocene, 

 Guadeloupe; Mellila ampla Holmes, Pliocene, Guadeloupe. 



' Duchassaing (1855, Observations sur les formations modernes de l'ile de la Guadeloupe, 

 Bull. Soc. Geol. de France, ser. 2, vol. 12, pp. 753-757) gives a list of 13 species of Echini occurring 

 in the white tuff at Guadeloupe. He gives no authority for the species and their identification 

 is doubtful. The last two pages of his paper contain a list by Michelin entitled "Echinides vivants 

 et fossiles des Antilles et du Golfe du Mexique." This list contains many nomina nuda or obvious 

 mistakes of identification. 



