ON THE SHETLAND CRUSTACEA, TUNICATA, ETC. 323 
understood, it is probable that the specimens here called cornea are 
referable to squamata. 
Clava diffusa, Allman, Ann. Nat. Hist. 3rd ser. vol. xi. 1863, p. 8; Brit. 
Assoc. Rep. 1862 (1863), p. 101. ‘ Rock-pools, at low spring tides, 
Out Skerries ” (Allman). 
Tubiclava cornucopie, Norman, Ann. Nat. Hist. 3rd ser. vol. xiii, p. 82, pl. ix. 
figs. 4, 5, = Merona cornucopia, id. ibid. 3rd ser. vol. xv. p. 262. On 
Astarte sulcata and Dentaliwm entale, 20 miles north of Unst, in 80-100 
fathoms, 1863; St. Magnus Bay, and 5-8 miles east of Balta, in 40-50 
fathoms on Dentalium, 1867. 
Hydractinia echinata (Fleming). 
Podocoryne areolata (Alder) = Hydractinia areolata, Alder, Trans. Tyn. Nat. 
Field Club, vol. v. p. 225. pl. ix. figs. 1-4, = Rhizocline areolata, Allman, 
Ann. Nat. Hist. 3rd ser. vol. xiii. (May, 1864). A specimen investing 
the shell of Natica Grenlandica found in 1863, 10 miles east of Balta, 
in 75 fathoms. 
Coryne pusilla, Geertner=Sarsia tubulosa, Forbes, Naked-eyed Meduse (the 
gonosome), fide L. Agassiz. 
Tide-marks, Balta Sound, 1867 ; the ordinary form, and also a slender 
variety of the.species. YO2man fA’ 
i 
2 nutans, ‘Allman, n.sp. T'rophosome—Hydrocaulus attaining a height’ . 
of about 4 lines, much branched; branches subalternately disposed, 
deeply and distinctly annulated, the annulations of hydrocaulus becoming 
less distinctly marked towards the base. Polypites depressed on one 
side of the stalk, so as to assume a nutant posture, ovate, with about 
15 tentacula. Gonosome unknown. 
“ Our ignorance of the gonosome renders the allocation of the present 
hydroid in the genus Coryne a merely provisional one .... Its tro- 
phosome resembles that of Coryne pusilla, but is smaller, while the hy- 
dranths droop upon their stalks in a characteristic way not noticeable 
in C. pusilla” (Allman in litt.). Found in 1863 in the caves at Burra- 
firth, especially in Halse Hellyer, where it lives abundantly, with the base 
of the hydrocaulus immersed in sponges which coat the sides of the cave 
from extreme low-water mark to about half-tide. 
vermicularis, Hincks, Ann. Nat. Hist. Oct. 1866, p. 296. ‘Shetland, 
from deep water ” (Hincks). 
ramosa, Ehrenberg. Procured in 1863; the specimen identified by Mr. 
Alder. 
Syncoryne eximia (Allman). “ Shetland, 1864, Peach ”’( fide Alder in litt.). 
Eudendrium rameum (Pallas). 
ramosum (Linn.). 
annulatum, Norman, Ann. Nat. Hist. 3rd ser. vol. xiii. p. 83, pl. ix. figs. 
1-3. The type specimens procured in 1863 in “ Buness Hall,” one of 
the caves of Burrafirth, at extreme low water, spring tides. 
vaginatum, Allman, Ann. Nat. Hist. 3rd ser. vol. xi. (1863) p. 10; 
Brit. Assoc. Rep. 1862 (1863), p. 102. “ Rock-pools, extreme low 
water, spring tides, Shetland” (Allman); also 40-50 fathoms off Balta, 
' 1867 (A. M. N.), the specimen determined by Prof. Allman. 
Coppinia arcta, Dalyell, or Sertularia abietina, Halecium halecinum, &e. 
In a paper read this year (1868) at the Brit. Assoc. Meeting, Prof. 
Allman showed that Coppinia is a Tubularian and not a Campanularian. 
Perigonimus minutus, Allman, Ann. Nat. Hist. 3rd ser. vol. xi. (1863) p. 11; 
Brit. Assoc. Rep. 1862 (1863), p. 102. “ Forming a fringe round the 
