14 SVEN LOVEN, ON TIIE ECHINOIDEA DESCRIBED BY LINN^.DS. 



of tlic Tcstacea and \'ermes of tlie M. L. U., original or 

 traiiscribcd, is now however cntirely löst, at least, as for as 

 \ve know, no trace of it is extant, and recourse is to be had 

 to otlier means for ascertainiug thc time and mode of the 

 orioin of this part of thc work. 



LiNN^us lectured in tlie antiimu of 1752 ') on the Class of 

 Vermes, and of the notes then taken among his hearers several 

 eopies are extant -). Upon the whole these lectures formed a 

 eommentarj on thc sixth Class, Vermes, as this stånds in the 

 S. N., ed. 6, 1748. Its foiir Orders: Keptilia, Zoophyta, Testacea, 

 Lithophyta, are maintained and the genera keep their num- 

 bers. Those of the lirst Order, numbered 210 — 215, as well 

 as thc first eleven, 216— 22(i, of thc sccond Order, are idcntical. 

 In tlie fourth Order, the Lithophyta, which in the first and 

 second editions were referred to the Regmim Vegetabile, dispo- 

 scd after Bern. Jujssieu •''), the fonr genera 238 — 241 remain,' 

 but three new genera are added, not numbered: Isis for the 

 Corallium rubrum, lithoxylon for thc Gorgonia liabcllum etc. 

 together with the Alcyoniiim arboreum, and Hippuris for the Isis 



') L. to Back, " lo 52. 



*) Of the four copies here made use of two appear to give originals 

 written down directly and separately. while the two others seem to be 

 transcriptious at second hand. The four MSS are: a) A folio of 104 pages 

 in the handwriting of Peter Joxas Bergius who was born 17B0, a stu- 

 dent at Upsala, i-responded» "^ 50, »PrEeside C. Linn.^io», for the disser- 

 tation: Semlna Muscorum, and was created M. D. in 1754. He died at 

 Stockholm in 1790, having bequeathed his library with the rest of his 

 property to the Acaderay of Sciences. The title: »Caroli Linnaei Patris» 

 Lectures, added posteriorly, has no date, but under the genus Lithoxylon 

 the words occur: »in this year 1752.» It comprises the whole of the 

 sixth class and is evidently original and very correct. — b) Å 4:o vol., 

 Oodex C, 160, in the library of the University at Upsala, seems to be a 

 transcript of this. — c) A 4:0 of 169 pages, in the library of the Aca- 

 deniy of Sciences: »Lectures on the si.xtli class of the Animal Kingdom, 

 Worms. Shells and Corals, delivered by the Archiater Dr C. Linn^us 

 in the auturan terni of 1752». a neat original, or a copy from one, diffe- 

 reut from the tirst. — d) A 4:o of 159 pages in the possession of Dr 

 EvaIjD Ahrling, comes very near to the foregoing. — In the earliest 

 outline of the future Systema Naturiii that has come to us, notes taken 

 by Mennandfr from a Lecture of Linx.kus delivered probably in 1733, 

 preserved in the Royal Library, the sixth Class, answering to that of the 

 Vermes, bears the name: Zoophyta, and its second Order comprises the 

 »Ostracodermata», the future Testacea. It begius with 1. Limax, followed 

 by 2. Oochlea: Planorbis, Helix, Paludina and a number of the »preteu- 

 ded» genera of thc authors: 3. Nerita: Neritina fluviatilis; 4. Porcellana: 

 Cyprsea: 5. Auris marina: Haliotis; 6. Nautilus: Argonauta; 7. Coucha: 

 Musculus 1. Mytulus; Chama, oblong. gaping; Pecten, Ostrea; 8. Cunnus 

 marinus: Cytherea; 9. Patella; 10. Balanns; 11. Entalium. »Also Tetbys, 

 Holothuria and other genera mostly iinknown». 



^) L. to BÄCK, '% 44, highly praising the merits of JussiEU. See 

 also the Corallia balthica. 



