418 APPENDIX. No. IV. 
ENTOMOSTRACA. 
Two new species of the genus Caligus of Miiller were found on fishes. 
Myriaropa. 
Tutus, two species, one of which is new. 
ScoLorENDRA, one nondescript species. 
INsEcTA. 
Thirty-six species only reached England in a tolerable state, the rest were 
entirely destroyed by insects and damp. Amongst them is a new genus of 
the family S‘carabwidea, and probably there are five or six new species, which 
I have not yet found time to examine. - 
ANNELEIDES. | 
A new species of Nereis was taken in a bit of floating wood 0, 21, ON. lat. 
5, 49, 37 E. long. together with a genus not known to me. 
‘ EntT0zoa. 
One species of this parasitical class, was taken out of the intestinal canal of an 
albicore. 
ACALEPHR 
Porerrra. Disc cartilagmous, round, composed of rays. Stomach central and 
round. Mouth slightly prominent and capable of very great distention. 
Whole underside covered by tentacula, those of the middle terminated by 
suckers, those next the margin larger (and simple or at least terminated by 
indistinct suckers.*) 
Of this genus, to which the above characters are now given, a new 
species, was found in 8, 12, ON. lat. 18, 13, 7 W. long. viz, 
Porpita granulata, The rays of the upper part of the disc granulated by pairs. 
The stomach of one specimen was filled with the debris of a fish. ; 
, 
* In specimens of very soft animals preserved in spirits of wine, where the organs are 
much contracted, it is generally impossible to ascertain all the characters of each part. 
Naturalists should therefore take every opportunity to describe them whilst alive, since 
all are not gifted with the extraordinary powers of a Savigny. 
ae 
