1902.] AND ANCIENT GEOGRAPHY. 395 



Nevertheless, I am able to offer here a list that is quite large. 1 



Pacific Side. 



Panulirus interruptus 

 (Rand.). % 



Calci nus tibicen 

 (Hbst.), Ecuador 

 (Nobili, Boll. Mus. 

 Torino, Vol. 16, 1901, 

 p. 26). 



Petrolisthes gala- 



TH1NÜS (BoSC). 



Pachycheles pana- 

 mensis Fax. (see No- 

 bili. /. c, p. 19). 



Genus Lepidopa. 



Remipes strigillatus 

 Stps. 



Albunea lucasia ( Sauss.). 



HlPPA EMÉRITA (L.). 



Hypoconcha panamen- 

 sis Sm. 



ETHUSA AMERICANA A. 



M.-E. 



Atlantic Side. 



P. argus (Latr.). 



C. tibicen (Hbst.). 



P. GALATHINUS (BoSC.). 



P. panamensis Fax. 



Genus Lepidopa. 



R. cubensis Sauss. 



A. gibbesi and pareti. 



H. emérita (L. ). 



TT. sabulosa (Hbst.). 

 TL. arcuata Stps. 



E. AMERICANA. 



Remarks. 



The Californian species is 

 the most closely allied 

 form, although the genus 

 is circumtropical. 



We exclude P. armatus 

 Gibb. as a circumtropical 

 species. 



Number of species doubtful, 

 but exclusively found in 

 the West Indies and Low. 

 California. The species 

 on both sides different. 



Also in West Africa. This 

 group of the genus is 

 found nowhere else. The 

 genus is circumtropical. 



No other species of the 

 genus are so closely allied, 

 although the genus is cir- 

 cumtropical. 



Genus circumtropical. 



Genus found nowhere else. 



Genus cosmopolitan. 



1 Where no references are given, the facts are taken from Ortmann, in 

 Bronn's Klass, u. Ordn., Vol. 5, 1900, p. 1275, and from my unpublished revis- 

 ion of the respective groups for the " Thierreich." 



Identical species -are printed in Small Capitals; the most important forms, 

 where the genus is not found outside of American waters, are printed in italics. 



