338 Dr. H. Woodward — Cirrij^edes from Trimminrjhain Chalk. 



(the latera, scuta, and terga being displaced, but diagrammatically 

 restored in the woodcut (Fig, 3, given on p. 149). Later on 

 Dr. Eowe contributed another example from the Chalk of Whitway 

 Pit, South Dorset, from the Bel. mucronata zone (see Geol. Mag., 

 1901, p. 528). He also subsequently sent me, among other 

 specimens, eight carina and rostra of Brachylepas cretacea, together 

 with detached scales, etc., from the Chalk of Edward's Pit, 

 Mousehold, Norwich. I am now able to record Brachi/Iepas cretacea 

 as having been found by Mr. Brydone in the Chalk Bluffs of 

 Trimmingham. In his collection sent to me is a single, very well 

 preserved carina, which Mr. Brydone transmitted some years before 

 with other Trimmingham fossils to Dr. Wilhelm Deecke (Professor 

 of Geology and Paljeontology in the Eoyal University of Greifswald, 

 Prussian Germany), who at once identified it as Pollicipes can- 

 cellatus, Marsson^ (1880). A careful comparison of Mr. Brydone's 

 specimen with Dr. Marsson's figure on the one hand and with 

 the long series of specimens obtained by Dr. Eowe from the Chalk 

 of Catton, near Norwich, leaves no doubt in my mind that 

 P. cancellatus, Marsson, is identical with Brachjlepas (Fyrgoma) 

 cretacea, H. Woodw., 1868, so that F. cancellatus must be treated as 

 a synonym of Br. cretacea. Mr. Brydone writes me : " I never 

 found any more such perfectly preserved valves of Br. cretacea at 

 Trimmingham, nor any associated valves, but I must have at 

 least a dozen or more indifferently well preserved examples in my 

 collection, so that ' relatively common ' is a fair statement in regard 

 to this species at Trimmingham." 



Distribution of Brachylepas cretacea : This species has been found 

 in the Upper Chalk (zone of Bel. mucronata), Whitway Pit, South 

 Dorset ; in the Isle of Wight ; at Weybourne and Trimmingham, 

 Norfolk ; at Catton, near Norwich ; and in the Chalk of Eiigen. 



[Before describing a new form of Brachylepas I desire to express 

 ray regret in having in my former paper (Geol. Mag., 1901, 

 pp. 145-152), quite unintentionally, overlooked a most important 

 piece of evidence relating to this remarkable Cirripede, published in 

 1857, by my old friend Monsieur J. A. H. Bosquet, of Maestrioht 

 (who died in 1880). In his " Notice sur quelques Cirripedes dans le 

 Terrain Cretac^ du Duche de Limbourg" (4to, Harlem, 1857, pp. 36, 

 plates i-iii) the author figures and describes some 17 species; 1 of 

 Chihamalus, 2 of Verruca, 6 of Scalpellum, 8 of Pollicipes, for which 

 latter he retains Oken's generic name Mitella, discarded by Darwin.* 



• See " Die Cirripedien unci Ostracoden der "Weissen Schreib-kreide der Insel 

 Riio-en," von Dr. Th. Marsson, in Greifswald. Mittheil. aus dera Xaturwiss. Vereine 

 von Neu-Vorpommern und Riigen in Greitswald. Redigii-t von Dr. Th. Marsson, 

 1880, p. 24, Taf. ii, fig. la. 



^ Referring to the genus Pollicipes, Leach, 1817, adopted by Darwin in his 

 "Monograph on the Fossil CiiTipedia" (Pal. Soc, 1851, p. '47), that author 

 observes: " This is one of the rare cases in which, after much deliberation and with 

 the advice of several distinguished naturalists, I have departed from the rules of the 

 JBritish Association ; for it will bo seen that Mitella of Oken and Ramphidiona of 

 Schumac/.er are both prior to Pollicipes of Leach ; yet as the latter name is 

 universally adopted throughout Europe and North America, and has been extensively 



