r,8 Mr. T. II. Withers on 



Material [mnnber of specimens) . 



Ill addition to the specimens mentioned above, there is in 

 tlie (xcological Department of the Jiritish Museum, registered 

 5'J,8.'25, a fragmentary example of L. pulchella. which came 

 from the MiddleChalk of Cowslip Pit, near (juildford, Surrey. 

 It consists of about ten rows of the three median scries of 

 peduncular plates. At least two, if not three, further frag- 

 mentary specimens o{ L. pulcht'lla are in the BrightonMuseum 

 (Willett Collection, No. 40^, on a piece of chalk from the 

 Middle Chalk of Mailing, Kent. 



Of Stramentiim haworthi from the Niobrara Chalk of 

 Kansas, there is in the Geological Department of the British 

 ^Museum, collected by Mr. H. T. ^Martin, (1) two com- 

 ])arativcly large and almost complete specimens on a small 

 yellowish slab, registered I. 15,915 ; (2) a large yellowish 

 slul) with about nine small individuals (registered In. 18,990), 

 and a larger pinkish slab with remains of at least twenty 

 individuals (registered In. 18,989) : in both cases the shells 

 appear to have been attached to some strap-like organism of 

 which only a stain remains, and almost all the specimens 

 consist of one side of the shell with the inner surface upper- 

 most, three or four retaining the scutum, which shows the 

 pit for the adductor muscle. 



Altogether the material known to me comprises no less than 

 seventy individuals, and of these quite fifty represent at least 

 one side of the shell in a fairly good state of preservation. 



Name. 



The name Loricida was first given to a cirripede by 

 Ci. B. Sowerby, junr. (1843). This generic name has been 

 widely accei)ted, and has been used by Darwin (1851) and 

 every subsequent author on fossil and recent cirrijjedes. It 

 is the more unfortunate that it should be preoccu|)ied by 

 Loricula, Curtis (1833), a genus cstahlished for a Ilcmipterid. 



In 1897, \V. N. Logan founded the genus IStruinenlum on 

 two species of cirrij)edes occurring in the Chalk of Kansas. 

 One of these had previously been described by Prof. "Willistou 

 (189G) under the name PoUicijiPS Jicncorthi, and it is not only 

 because of this, but because it is the first of the two species 

 described by Logan, and is more complete than the second 

 species S. tahulatum, tliat S. hatvorthi is here taken as geno- 

 type of the genus Strmnentuvi. 



There is no room for duuljt that the Kansas species, 

 Stramentum haworthi, is congeneric with Sowerby's Luricula 

 ]m/chtlla, and although Logan Mas evidently unaware that 



