Rey. L. Guilding’s Observations on the Chitonide. 25 
Ohe! jam satis! His arguments and his mode of using them are, I will 
admit, of such an extraordinary nature, as fully to entitle him to come not 
only to the two extreme conclusions, but also to five hundred intermediate 
ones. Still, as it is rather puzzling to guess Mr. Clark’s real decision, I 
trust the Council of the Linnean Society will either allow him to append 
a supplement, stating which of the two opposite conclusions is his final 
opinion, or that they will have the condescension to state, for the good of 
the Society at large, what they conceived to be his real sentiments when 
they ordered the paper to be printed. I repeat that the paper is so truly 
original in natural history, classical lore, style, and orthography, that I 
find it impossible to answer it. I may humbly venture to deny, however, 
the accuracy of Mr. Clark’s assertion, that I ever expressed or even enter- 
tained a wish to change the name of the genus Mstrus. 
I would here ask a question, most important to the future interests of 
the Linnean Society. Is it not advisable for the Council to alter their 
present plan, and to insist upon the person to whom a paper is referred, 
making a written report upon the manner in which any opinion is 
supported ? Similar reports are made on all papers given in to the French 
Institute. The critic’s personal reputation being then at stake, the 
Council at large might be sure that no paper would be unjustly condemned 
or stupidly lauded. 
Eyer, my dear Vigors, 
most truly your’s 
W. S, MacLzay. 
Arr. VII. Observations on the Chitonide. By the Rev. 
Lanspown Guitpine, B.A., F.L.S., IG. & WS, &e. 
Tribus. PoLYPLAKIPHORA, Blainv.* 
Fam. Chitonide, Gray, Guilding. 
Animalia ceca, hermaphrodita? plantivora ? 
Corpus ovato-elongatum ; apicibus equalibus, rotundatis: disci ver- 
tice nunc longitudinaliter subcarinato, nunc rotundato-subdepresso. 
* Locum melius demonstravit Cuvierius, 
