the Cirripede Genus Stramentum. G9 



cirripcdes similar to his Stramentum had beea described 

 from the Cretaceous rocks of other countries, there is no 

 optiou but to accept his genus Stramentum, since the name 

 Loricula is preoccupied. 



Stramkntid.e, nom. nov. 



This is a new name to replace that of Loriculid?e, which 

 embraced the genera Loricw/aand Arc/ueolepas (see Pilsbr\% 

 1916, p. 11.). Archceolepas must be removed from here 

 (see p. 79), and for the present might more properly be 

 included in the Scalpellidae, Until the precise structure of 

 the genera Loriculina and Squama is known, it is impossible 

 to say wliethcr they should be included in the family 

 Stramentidie or not, although it is more convenient to keep 

 them there at present. 



Stramentum, W. N. Logan. 



1833. Non Loricula, Curtis, Entora. Mag. i. p. 197 (Hemipterid). 

 1843. Loricula, G. 13, Sowerbv, Anu. &; Mag. Nat. Hist. vol. xli. 



p. 260. 

 18'J7. Stramentum, W. N. Logan, Kansas Uuiv. Quart, ser. A, Oct. 



1897, vol. vi. No. iv. p. 188. 

 1898. Stramentum, W. N. Logan, Univ. Geol. Surv. Kansas, vol. iv., 



Palffiont. pt. viii., Arthr. p. 498. 



Diagnosis. — Shell flattened laterally. Capitulum composed 

 of ten valves comprising paired scuta, paired upper latera, 

 paired terga, paired carinal-latera, and a pair of linear valves 

 homologous with the carina in other cirripedes. Peduncle 

 with ten rows of smooth calcareous plates, five on each side, 

 the six inner rows much elongated transversely, and the 

 outer rows short ; on their outer edges the plates of the 

 outermost rows meet, but do not alternate with each other. 



GenotiJi>e. — S. haivorthi, Williston, sp. 



Distribution. — Senonian (Upper Chalk) : East Harnham, 

 near Salisbury, Wilts, and Norwich, Norfolk ; Diilmen, 

 ^Vestphalia ; Kansas, U.S.A. Turonian (Middle Chalk) : 

 Cuxtou, near Rochester, and Mailing, Kent ; near Guildford, 

 Surrey ; Black Mead Bay, co. Antrim, Ireland ; AVcissen- 

 berg, Bohemia ; Duck and Riding ^Mountain District, 

 Manitoba, Canada. Cenomanian (Lower Chalk) : Lebanon, 

 Syria. 



The following are the described species and varieties : — 



Stramentum canadensis, Whiteaves, sp. 

 danuini, IL Woodward, sp. 



