/ 



288 CONTRTHT^TTONS FROM TTTE NATIONAL TTKRT^A KTUM. 



ActiniscfiscffnatusVAuiu]). Tliys. Al)li. Akad. Wiss. T'<t1. 1872: S!H). pi. G. JT.f, 12. 



1873. 

 Avtitilscns ricenarui.^ I'limil). Pliys. Alih. Akad. Wiss. Vn'v]. 1872: IVM). pi. G. ILJ, 



11{?). 1873. 

 (liaelomos rai-iam Van \lv\u\ Syiutp. ]!)5. 1885, Do Toni, 8yll. Al<;. 2: 098. 180L 

 Bactenasfrvni ,spirUiutn Ciistr. Ilcp. Voy. (Iiall. lint. 2: 83. pi. J9.f, 2, pi. 29. f. 1. 



.1881). 

 Baderiasfruni hrmspinvm <\is1i\ R(^p. Voy. Chall. IJoi. 2: 83. pi. 15. f. (I, S. 1886. 



Th<^ vf'ry appropriatt^ ^^p^n'ific naiiu' of T.undor must g;ivH' place ti» ituit of SbadboU. 

 Castracano l>iulds the spcoiTK^ rliaraclcr of his spirilhivi on the spirally Avound setao^ 

 a quality not po^.so^sc^l, he says, l>y the aboA^e. Thi^^ is quite eonlrary to the facts. 

 His oAvn figures of B. ran'ans Ijand./' show this spiral quality. Or if his contention 

 is that these are simply undulate, Avhile his form has setat^ with a si>irally AVound 

 thickening, this also is incorrect. C. furcalas sIioaa's this in many Bpecimens most 

 j>lainly. IL may be addi-d that exa<"t duplicates of his B. brevispinu/n are found at 

 station 3098, Ijoth having arid destitute (tf the spiral ornamentation of the setae. 



As this is the species to which l>el<nig most or all of Ibt^ forms named generieally 

 Actiniscus by FdnN^idicTg^ it may Ix^ \vo\l to here add to tlu^ reasons advanced l>y mo 

 under the present genus caption for r(j*(*cting EhrenlxTg's name a quotation from Van 

 lleurekfj bearing on this point, lie says: "Note. — Les formes pour lesquelles Ehren- 

 berg a eonstitue le g(aire Actiniscus, n'etaient pas des Diatonmes et les auteurs subs6- 

 qnents (pii ont ecrit sur ces funiies n'auraient pas du les admetlrc^ dans leur classifica- 

 tion. Khrenberg a ra}>]Hirle le genre Baeteriastrum a s(m genre Actinisi'us mais sans 

 avoir aucxme raistm plausibh^ <4 il a contimie a aglr ansi jiisrpie dans son dernier 

 ouvrage, Fortsetzung (h r Mikr. Suulien, 1875. Tontes les formes <le Baeteriastrum 

 dnivent etre ranu^noes au geurt^ ('haeto(nTos." 



Found at stations 2800, 3091, 3340, 3098, 3712H, off liritish Columbia to Oregon and 

 Kurile chain to Ihuishu Island, Japan. 



Chaetoceros sp.? 



- THdadia wamUuma F. W. Faih^y, Best. Tour. Nat. Hist. 7: 339. pL 7./ 4t-i5. 1802. 



My spet:imens agree with Jigiux^ 44 iu the abov(\ being what Bailey calls var. B. 

 Found at stations 4013II, 451011^ off Ilojishu Island, Japan, and Fewer ralifurnia. 



Chaetoceros sp. ? 



GonlolhedumodontvUa Fhrcmb. H<t. Akad. "Wiss. BerF 1844: 82. 1845; Mikrog. pi. 

 18 J. 94, pi. 3S. Xlll. /. IS 7;. })!. ,^1, XV. f. to. 1854. Prilch. Hist. Infus. ed. 

 4. 804. pi. G. f. 29. 180F Bright. Quart, Journ. Micr. Pci. 4: 100. pi. 7./. 47-4S. 

 185G. Mod). Diat.-taf. pL S,f. 47-48, 1890. De T<mi, Syll. Alg. 2: 1009. 1894. 

 Witt, Verb. Buss. :\rin. Gi-s(4L IF 22: 25. pL 7. f. 7-H. 188G. Van Heur. Synop. 

 pi. 105, f. n-12, 1881. 



Ehrenberg found this fcirm, tog(4her Avith eight otluTs named by him, in the fossil 

 deposit (tf Bichmond, Virginia. Although this particular one has not so far been met 

 Avith in a living st.ate, six <;f the other eight have been so observed. It is therefore 

 reasonable to assume that tbesi; peculiar structures are inner casings of certain Chae- 

 toceros valves, the outer splne-lx^ariug valves of wliich have falh»n away. But it 

 sliouhl be remembennl that (piite ilissimilar speeiui* us of ri(»niotheeium may be 

 eAM'Utually found to belong I0 the same species of riiaeiocon^s. These forms are so 

 fi('qu(^ntly met with an<l are so Avidely illustrate*! in dialom liM'ratnn^ that I have 



I 



thought it advantageous to giv<^ th<^ abov(^ citations'. 

 Found at station 402!) FT, Bering S<u. 



" Fastr. op. cii. pi. 14. J- ^^ pi- 29. f. S. 

 ?^Van Ileur. Synop, 195. 1885. 



