526 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



appendage seen in most species. In contrast to these primitive 

 characters, members of the family Lithoglyptidae lack the specialized 

 lateral bar, gizzard, and long labrum characteristic of the family 

 Cryptophialidae and the degenerate uniramous terminal cirri of the 

 family Trypetesidae. 



Finally, it is interesting to note that Lithoglyptes spinatus from the 

 Caribbean was found some 11,000 miles from other members of the 

 family in the Indo-Pacifie. 



Literature Cited 



Aurivillius, C. W. S. 



1892. Xeue Cirripeden aus dem Atlantischen, Indischen, and Stiilen 

 Ocean. Ofv. Svenska Vet.-Akad. Forh., vol. 49, No. 3, pp. 133-134. 

 1894. Studien liber Cirripeden. Svenska Vet. Akad. Handl., ser. 4, vol. 

 26, Xo. 7, pp. 1-107. 

 Berxdt, W. 



1907. tiber das System der Acrothoracica. Arch. Naturg., vol. 73, Xo. 1, 

 pp. 287-289. 

 Utixomi, H. 



1950a. A new remarkable coral-boring acrothoracican cirriped. Mem. 



Coll. Sci., Univ. Kyoto, ser. B, vol. 19, Xo. 3, art, 18, pp. 1-8. 

 1950b. General account of Acrothoracica, in Professor Xakamura's Some 

 problems of modern biology, Osaka (In Japanese). 



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