NO. 4 ECHINOIDS, TRINIDAD AND VENEZUELA COOKE 35 



Figs. 2-5. Eiipatagus clevei (Cotteau) (p. 26). 



Top, bottom, right-side, and posterior-end views X i of holotype, 

 USNM 1 15379. From the St. Bartholomew Hmestone, of late 

 (?) Eocene age, in St. Bartholomew, B.VV.I. 



Plate ii 



Figs. 1-2. Antillaster lamhcrti Jeannet (p. 24). 



Posterior-end and top views X i of USNM 638639. From the 

 La Vela formation, of late Miocene age, at La Vigia, 10 km. 

 southwest (southeast?) of Pueblo Nuevo, Paraguana district, 

 Falcon, Venezuela. 



Plate 12 



Figs. 1-4. Brissopsis antiUarmn Cotteau (p. 27). 



Top, posterior-end, bottom, and right-side views X i of USNM 

 638640. From the La Vela formation, of late Miocene age, on 

 the Paraguana Peninsula 10 km. southeast of Pueblo Nuevo, Fal- 

 con, Venezuela. 



Fig. 5. Antillaster lamberti Jeannet (p. 24). 



Bottom view X i of USNM 638639. From the La Vela forma- 

 tion, of late Miocene age, at La Vigia, 10 km. southwest (south- 

 east?) of Pueblo Nuevo, Paraguana district, Falcon, Venezuela. 



Plate 13 



Fig. I. Plagiobrissus grandis (GmeHn) ? (p. 28). 



Top view X I of fragment, USNM 638642. From beds of Mio- 

 cene (?) age on the Paraguana Peninsula 10 km. southeast of 

 Pueblo Nuevo, Falcon, Venezuela. 



Fig. 2. Lovenia cf. L. dumblei Kew (p. 25). 



Top view X I- Naturhistorisches Museum, Basel, Switzerland. 

 From beds of Miocene age at Punta Gavilan, Falcon, Venezuela. 



Figs. 3-6. Pericosmus stehlini Jeannet (p. 25). 



Posterior-end, right-side, top, and bottom views X i of USNM 

 638638. From the La Vela formation, of late Miocene age, at 

 La Vigia, 10 km. southwest (southeast?) of Pueblo Nuevo, Para- 

 guana district. Falcon, Venezuela. 



Plate 14 



Figs. 1-4. Rhynohrissus rostratus Cooke, n. sp. (p. 29). 



Top, left-side, and bottom views X i of holotype. Naturhisto- 

 risches Museum, Basel, Switzerland. Probably from the La Vela 

 formation, of late Miocene age at Punta Gavilan, Falcon, Vene- 

 zuela. 



Figs. 5-8. Cassiduhis jalconcnsis (Jeannet) (p. 21). 



Top, right-side, posterior-end, and bottom views X i of USNM 

 638635. From beds of middle Miocene age at Punta Gavilan, 

 Falcon, Venezuela. 



