184 Miscellaneous. 
1. Epibranchs, which have them on the back (Doris, Glabellina, 
&e. 
2: Pentrantis, which have them round the mantle (7'ritonia, 
Glaucus, Scyllea, Plocamocera, &c.). The Kolide would be 
allied to both the Epibranchs and Peribranchs. 
3. Hypobranchs (the Inferobranchs of Cuvier). The Thetydes would 
approximate all three Orders. 
4, Pleurobranchs, which have the branchie on the side (Pleuro- 
branchus, Pleurobranchidium, Laniogera, &c.). The Pleuro- 
branchs lead both to the Stegibranchs by their small test, and to 
the bulk of the Endobranchs by the pectinated form of the 
branchize. 
II. The order of STEGIBRANCHS (oréyn, a roof) would include 
four divisions :— 
1. Stegibranchs proper, corresponding to the Tectibranchs of Cuvier 
(without the Pleurobranchs) and to the Scutibranchs of the same 
author. 
. Cyclobranchs, corresponding with Cuvier’s group. 
. Heteropod Stegibranchs (Heteropoda of Cuvier), which, if we 
take Carinaria as the type, have the heart and branchie within a 
small shell. The shelless Heteropoda must be left with Carinaria. 
4. The Ianthine, which have their branchial laminz half concealed 
by the shell, and which, like the Heteropoda, deserve to be sepa- 
rated on account of their curious appendage. Their pectinated 
branchiz also form a transition from the Stegibranchs to the 
Endobranchs. 
III. The order of ENpoprancus would correspond with the 
Pectinibranchs and Tubulibranchs of Cuvier. They may be divided 
into Turbinata and Tubulata. 
1. The Turbinata (the old Pectinibranchs) might retain the old 
Cuvierian subdivisions, or the much more natural division of De 
Blainville into Siphonobranchs and Asiphonobranchs. 
2. The Tubulata are the old Tubulibranchs. 
Comptes Rendus, Nov. 16, 1863, p. 826. 
Go bo 
Fucus anceps, Ward & Harvey. 
‘< Notwithstanding all that has been said pro and con, I have now 
to inform you that the Kilkee Fucus is neither I’. distichus nor yet 
F. fuscatus, nor yet any species known to Prof. Agardh, from whom ~ 
I have just received a specimen of the true F’. distichus of the elder 
Agardh ; and so, being constrained to give it a name, I propose to 
call it Fucus anceps, Ward & Harvey; and I request you to make 
known this alias to all to whom you have (en my authority) given 
the wrong name. This Fucus seems to combine the characters of 
the ribbed and ribless species, and therefore it may with propriety 
be named F, anceps.” —Prof. J. H. Harvey to Dr. Gray, Dec. 26, 
1563. 
