NO. 3 CASSIDULOID ECHINOIDS — KIER 63 



Synonyms of NUCLEOLITES 



Echinohrissus Gray, 1825. Ann. Philos., p. 429. Type species, Nttcleolites 

 scutatus Lamarck, by subsequent designation, Cooke, 1946, p. 222. 



Remarks. — There has been considerable confusion between Echi- 

 nobrissiis and Nucleolites. Most authors (e.g., Mortensen, Lambert 

 and Thiery, Duncan, and Cotteau) have used the name Echinohrissus 

 even though they attributed it to a pre-Linnaean author, Breynius, 

 1732. They considered Nucleolites clunicularis PhiUips the type 

 species. Since A^. clunicularis was not included among the two spe- 

 cies that Gray referred to his Echinohrissus, it cannot be the type 

 species. Cooke's designation oi N. scutatus as the type species is 

 correct, making Echinohrissus a junior objective synonym of Nucleo- 

 lites. Even if A^. clunicularis were the type species of Echinohrissus, 

 this genus could not stand. N. clunicularis is very similar to N. 

 scutatus and certainly congeneric, the two species being distinguished 

 from each other only by a slight difference in shape of their test, and 

 in the length of their anal groove. 



Acromasus Pomel, 1883. Class meth., p. 58. Type species herein designated, 

 Echinohrissus burgundiae (text figs. 36, 44) Cotteau, 1871, Pal. franc, Jur. 



One of the specimens figured herein was among the four specimens 

 labeled "types" in the Cotteau Collection at the ficole National 

 Superieure des Mines, Paris. 



Superieure des Mines, Paris 



Clitopygii^ Pomel, 1883. Op. cit., p. 58. Type species Echinohrissus lorioli 

 (text fig. 40) Cotteau, 1871, Pal. franc, Jur., by subsequent designation, 

 Lambert (1898, p. 468). 



Cluniculus Pomel, 1883. Op. cit., p. 57. Type species herein designated, Nucleo- 

 lites gracilis (pi. 6, figs. 5, 6; text fig. 38) L. Agassiz, 1840b. 



I found the holotype of this species in the Museum of Compara- 

 tive Zoology, Harvard. Its location has been unknown for many 

 years. "#V.'4!^| 



Holcocpygus Pomel, 1883. Op. cit., p. 58. Type species herein designated, 

 Nucleolites elongatus (pi. 6, fig. 7; text fig. 46) L. Agassiz, 1840b. 



Lophopygus Pomel, 1883. Op cit., p. 57. Type species by monotypy, Nucleolites 

 cordalus Goldfuss, 1826. 



Notopygus Pomel, 1883. Op. cit., p. 58. Type species herein designated, Nucleo- 

 lites ampins (pi. 6, fig. 8, text fig. 42) L. Agassiz, in Agassiz and Desor 

 (1847). 



Taphropygus Pomel, 1883. Op. cit., p. 59. Tj'pe species herein designated 

 Nucleolites subqiiadratus (pi. 6, fig. 9; text fig. 48) L. Agassiz, 1839. Both 

 Lambert and Thiery (1921, p. 348) and Mortensen (1948, p. 146) considered 

 Taphropygus a synonym of Clypeopygus, but the test in A'', subqiiadratus is 

 too inflated and the petals too narrow for Clypeopygus. 



