APPENDIX TO THE BIBLIOGRAPHY. 



1775. Fabkicius, J. C. 



Systema Eutomologiae. 



' For the definition of the Agonata see Note on Fabricius, 1775 (p. 40). In this group, at page 

 415 of the Systema, is placed the species Astacus crassieornis, of which Fabricius' descrip- 

 tion has been already quoted in the discussion of the genus Scina, p. 1271. As already 

 noticed, Herbst in 1796 described the same species under the name " Cancer (Gammarellus) 

 crassieornis;" but while by the name "Cancer (Gammarellus)" he led the way to the 

 inclusion of this species among the Amphipoda, he at the same time shut the gate against it 

 by retaining the erroneous characters of the original description. Hence the species has 

 passed through a long period of neglect ; but that Herbst was right in the matter of classifi- 

 cation is made clear by the figures in the unpublished Museum Banksianum, which have 

 attached to them the name Cancer crassieornis, and the signature " Sydney Parkinson 

 pinx'. 1768." It is quite possible that the original description was made, not from an actual 

 specimen, but from Parkinson's drawing, which is certainly suggestive of eight pairs of 

 limbs. The eighth segment attributed to the thorax, I now think, is not so well to be 

 accounted for by the inclusion of the head, as by the supposition that the fold of the skin 

 between the perseon and pleon has been converted into an eighth segment to meet the 

 exigencies of an extra pair of legs. 



The volume containing the figures just referred to is preserved at the British Museum in Cromwell 

 Road. An inscription at the beginning reads as follows : — " Zoological drawings by Sydney 

 Parkinson in Capt. Cook's First Voyage 1768-1771." Besides the Cancer crassieornis it 

 contains the following Amphipoda : — 



" Onidium spinosum. Sydney Parkinson pinx*. 1768.," three figures, respectively dorsal, ventral, 

 and lateral, about five inches long, intended apparently for life-size, and evidently repre- 

 senting the Cystisoma which Fabricius describes as Oniscus spinosus. 



" Onidium gibbosum. T. 15. P. Sept. 7. 1768.," with a monogram, seven figures which no doubt 

 refer to the Oniscus gibbosus of Fabricius, but the enlargement is not sufficient to help out 

 the description to any important extent. The fifth peraeopods are very small. 



" Onidium oblongatum. T. 16. P. Sept. 7. 1768.," with a monogram, two figures representing one 

 of the Hyperina, but without sufficient enlargement to show clearly the position of the 

 species. The magnified figure gives the two pairs of gnathopods and the last perreopods as 

 very much smaller than the intermediate feet. 



"Onidium quadricorne. Sydney Parkinson pinx'. ad vivum. T. 2. P. 2. August 28. 1768.," two 

 figures, which no doubt represent the Oniscus quadricornis of Fabricius, a species identified 

 with Hyperia medusarum (0. F. Miiller). 



Dr. Gunther kindly made search at my request for the specimens from which Sydney Parkinson's 

 drawings were made, but the Amphipoda could not be found among the specimens still 

 preserved in the cabinets of the " Banksian Museum." 



(ZOOL. CHALL. EXP. PART LXVII. 1888.) XXX 203 



