14 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I42 



56 mm.; width 49 and 55 mm.; height (somewhat crushed) 19 and 

 21 mm. 



Occurrence. — Venezuela: Holotype and paratypes from near the 

 headwaters of Rio Amana, Anzoategui, approximately 5 km. south- 

 west of Mundo Nuevo, Monagas (Standard Oil Co. of Venezuela 

 30123). Rio Amana, 3^ km. southwest of Mundo Nuevo, Monagas 

 (Mene Grande Oil Co. A-445). Rio Amana, Monagas (Mene Grande 

 OilCo. A-7532). 



Geologic horicon. — Late Eocene: Tinajitas formation, 



Holotype and paratype. — USNM 498964. 



Remarks. — No authentic specimens of Oligopygus circtilaris are 

 available for comparison, but the description and figures tally with 

 those of O. nancei. 



HAIMEA OVUM-SERPENTIS (Guppy) 

 PI. 4, figs. 7-11 



?Haimea caillaudi Michelin, 1851, Rev. et Mag. Zool., ser. 2, vol. 3, p. 92, fig. 2. 



(Locality unknown.) 

 Echinolampas ovum-serpentis Guppy, 1866, Geol. Soc. London Quart. Journ., 



vol. 22, p. 300, pi. 19, figs. 4a-b, 5. Not fig. 6. 

 Echinolampas ovum-scrpentis Guppy. Cotteau, 1875, K- Vetensk.-Akad. Handl., 



N.F., vol. 13, No. 6, p. 20, pi. 3, figs. 13-21. 

 Echinolampas oviim-serpcntis Guppy. Egozcue y Ci'a, 1897, Com. Mapa Geol. 



Espana Bol., vol. 22, p. 62, pi. 16, figs. 5-9. 

 Echinolampas ovmnserpentis Guppy. Jackson, 1922, Carnegie Inst. Washington 



Publ. 306, p. 60, pi. 10, figs. 4-5. 

 "Echinolampas" ovmnserpentis Guppy. Hawkins, 1924, Geol. Mag., vol. 61, 



p. 318. 

 IPauropygus elevatus Arnold and Clark, 1927, Harvard Coll. Mus. Comp. Zool. 



Mem., vol. 50, No. i, p. 35, figs. 1-3. 

 Pauropygiis oviimscrpentis (Guppy). Arnold and Clark, 1927, Harvard Coll. 



Mus. Comp. Zool. Mem., vol. 50, No. i, p. 36, pi. 5, figs. 7-12. 

 IHaimea caillaudi Michelin. Arnold and Clark, 1934, Harvard Coll. Mus. Comp. 



Zool. Mem., vol. 54, No. 2, p. 143. 

 Haitnca ovmnserpentis (Guppy). Arnold and Clark, 1934, Harvard Coll. Mus. 



Comp. Zool. Mem., vol. 54, No. 2, p. 143. 

 Haimea ovum-serpentis (Guppy). Mortensen, 1948, Monograph of the Echi- 



noidea, vol. 4, pt. i, p. 259. 

 "iHaimea caillaudi Michelin. Mortensen, 1948, Monograph of the Echinoidea, 



vol. 4, pt. I, p. 258, text figs. 248a-d (after Michelin). 

 Haimea ovumserpentis (Guppy). Durham and Melville, 1957, Journ. Paleont., 



vol. 31, No. I, p. 257, text fig. 2. 



Proportions of test variable ; horizontal outline usually oval to sub- 

 pentagonal ; upper surface evenly inflated or subconical, highest at the 

 apical center; lower surface much flatter, deeply depressed around 



