18 Gcel. 
CCELENTERATA. 
thecal side of the ramuli ; gonangia not protected by corbulas or other 
appendages. A. Mppuris^ sp. n., id. 1. c. p. 35, pi. xxi. figs. 3-6 (Shot 
Key, 195 fathoms). 
Hippurella, g. n. {Flumul.), id. Hydrocaulus branched, ultimate 
ramuli pinnate on the proximal portion of the branches, but distributed 
on all sides towards their distal extremities ; hydrothecse borne on the 
ultimate ramuli, unilateral, with entire margin, associated with a pair of 
supracalycine nematophores, and with azygous nematophores along the 
hydro thecal side of the ramulus (gonosome unknown). IT. annulata, 
sp. n., id. 1. c. p. 36, pi. xxi. figs. 7 & 8 (Pacific Reef, 283 fathoms). 
Monostmchas, g. n. (Plmml.), id. Stem branched ; hydrothecal 
ramuli confined to one side of their supporting branches ; hydrothecaa 
unilateral, with entire margin, associated with a pair of supracalycine 
nematophores, and with free mesial nematophores; gonangia not con- 
tained in corbula3, or connected with special branches. M. dichotoma^ 
sp . n., id. 1. c. p. 37, pi. xxii. figs. 1-5 (Pacific Reef). 
Antenella, g. n. (Plumul.)^ id. Hydrocaulus consisting of simple 
stems, which spring from a congeries of tubular filaments ; stems divided 
into internodes, destitute of pinnae, and directly bearing the hydrothecae, 
whose margin is entire ; nematophores free and moyeable (gonosome 
unknown). A. gracilis^ sp. n., id. 1. c. p. 38, pi. xxii. figs. 6 & 7 (Carys- 
fort Reef, 60 fathoms). 
Aglaophenia ramosa, sp. n., id. 1. c. p. 39, pi. xxiii. figs. 1-4 (Florida 
Reef, 2-3 fathoms); rhynchocai'pa, sp. n., id. 1. c.’p. 40, pi. xxiii. 
figs. 5-8 (Key West, 3-4 fathoms); lopTiocarpa^ sp. n., id. 1. c. p. 41, 
pi. xxiv. figs. 1-4 (Tortugas, 68 fathoms) ; apocarpa, sp. n., id. 1. c. 
pi. xxiv. figs. 5-9 (Sand Key, 100 fathoms) ; gracilis^ sp. n., id. 1. c. p. 42, 
pi. XXV. figs. 1-4 (Carysfort Reef, 62 fathoms) ; rigida^ sp. n., id. 1. c. 
p. 43, pi. XXV. figs. 6-9 (Cape Fear, 9 fathoms) ; distans, sp n., id. 1. c. 
p. 44, pi. xxvi. figs. 1-8 (Pacific Reef, 283 fathoms) ; sigma, sp. n., id. 
1. c. p. 45, pi. xxvi. figs. 9 & 10 (Alligator Reef, 110 fathoms) ; liapinosa^ 
sp. n., id. 1. c. p. 46, pis. xxvii. & xxviii. (Alligator and Tennessee 
Reefs, 156-200 fathoms) ; constricta, sp. n., id. 1. c. p. 47, pi. xxix. 
figs. 1-4 (Conch Reef, 30 fathoms) ; perpusilla, sp. n., id. 1. c. p. 48, 
pi. xxix. figs. 6-7 (Quicksands, 34 fathoms) ; late-carinata, sp. n., id. 1. c. 
p. 66 (Mexican Gulf, on gulfweed). A. struthionides (Murr.), Clark (3), 
p. 262, pi. xli. fig. 3. 
Cladocarpus dolichoiheca, sp. n., Allman (1), p. 50, pi. xxx. (Pacific 
Reef, 283 fathoms) ; ventricosus, sp. n., id. 1. c. p. 62, pi. xxxi. (Sand 
Key, 100 fathoms) ; paradisea, sp. n., id. 1. c. p. 53, pis. xxxii. & xxxiii. 
(off Tennessee Reef and Samboes, 123-174 fathoms). 
Halicornaria speciosa, sp. n., id. 1. c. p. 64, pi. xxxiv. (Shot Key, 4-5 
fathoms). 
Graptolites. 
W. SwANSTON, Graptolites, with special reference to those found in 
County Down ; P. Belf. Club (2) i. p. 115 et seq. J. Young, On Grap- 
tolites from Silurian Strata of the Girvan Valley ; P. N. H. Soc. Glasg. 
ii. p. 182 et seq. G. H. Morton, On the Graptolites found in the Lower 
Llandilo Strata, &c. ; P. Livcrp. G. Soc. iii. p. 296 et seq. 
