CIRRIPEDIA, XIPHOSURA. 
Crust. 46 
Balanidad. 
Note on Balanidce fixed on sponges and overgrown by them, termed 
Acasta, by Leach ; H. J. Carter, Ann. N. H. (5) ii. p. 158. 
Balanus porcatus (Dacosta), Cape Napoleon, 50 fath., and 79° 38' N. 
lat., and halanoides (L.), Port Foulke, Arctic America; Miers, in Nares’s 
Narrative, &c., ii. pp. 247 & 248. 
Balanus improvisus (Darwin), found on several points of the northern 
shore of Germany, the var. gryphica is a very slight variation : Metzger, 
Nachr. mal. Ges. 1878, pp. 7-9. 
Elminius sinuatus and rugosiis, spp. nn., Hutton, Tr. N. Z. Inst. xi. 
p. 328, New Zealand. 
Lepadida:. 
Pollicipes darwini, sp. n., Hutton, Tr. N. Z. Inst. xi. p. 329, New 
Zealand. 
Scalpellum strmmi (Sars) ; Heller, Denk. Ak. Wien, xxxv. p. 39, pi. iv. 
figs. 13 & 14, Arctic Sea. 
Scalpellum striolatum, sp. n., G. O. Sars, Arch. Math. Naturv. 1876, 
p. 364, Northern Sea, 62-63° N. lat., 1° E.-l° W. long., 400-1000 fath. 
Note on the formation of the stalk in Lepas anatifera ; Lang, MT. 
Ges. Bern, 1877, pp. 103-105. 
Conchoderma virgatum (Spengl.) fixed on an undetermined species of 
Pennella^ taken from Xiphias gladius at Naples ; P. Mayer, MT. zool. 
Stat. Neapel, i. p. 53. 
PeLTOGASTRIDJ}. 
Sacculina neglecta^ sp. n., Fraisse, Arb. Inst. Wurzburg, iv. p. 290, 
Naples, on Stenorrhynchus phalangium (Penn.). 
Peltogaster rodriguez% sp. n., id. 1. c. p. 289, pi. xii. figs. 10 & 11, Mahon, 
on Clihanarius misanthropus (Risso). 
XIPHOSURA. 
A. Gerstacker, in his general treatise on the continues 
the anatomical and physiological description of Limulus (order Pcecilo- 
podd), and discusses at length its systematic place ; he admits, with 
Owen, opposing Milne-Edwards, that the first pair of pincer-bearing feet 
is prseoral, and rejects the suggested affinity with the Spiders, as 
founded only on the same number of oral and thoracic members, which 
may be accidental, and is contradicted by important anatomical char- 
acters, among which the want of Malpighian vessels may be mentioned. 
According to him, Limulus is doubtless a Crustacean, on account of the 
abdominal members, which functionally differ from the thoracic, and 
resemble those of the Copepods in general shape and order of develop- 
ment, bearing also respiratory organs ; also on account of the situation 
of the genital orifices, the whole disposition of the female organs, the 
