PYCNOGONIDEA — ACAItIDEA. Arachu, 19 
p. 259], fully described by the author ; Denk. Ak. Wien, xxxvi. (1876) 
pp. 40 & 41, pis. iv. fig. 16, V. figs. 1, 2, and 3-6, Arctic Sea. 
A Pycnogonid measuring nearly two feet across the legs, dredged in 
the Southern Indian Sea ; Willemoes-Suhm, 1. c. p. 588. 
PCECILOPHYSIDEA (Oedo Nova?). 
PCECILOPHYSIDES. 
Pcecilophysis, g. n., appears to be a kind of compound of Spider, 
Solpuga, Chelifer, and Acarus ; probably it will eventually be decided to 
constitute merely a special family of Acaridea. P. kerguelenensis^ sp. n., 
O. P. Cambridge, P. Z. S. 1876, pp. 261 & 262, pi. xix. fig. 4, Kerguelen 
Island. 
ACARIDEA. 
Mi^ONIN, P. Metamorphoses des Acariens on gendral, ot en particulier 
des Trombidions. 
A paper, reported by M. Girard, from the 14“*e. reunion des Societ^s 
savantes departementales a la Sorbonne, Avril, 1876 (Pet. Nouv. ii. 
pp. 41, 47). 
. Memoire sur I’organisation et la distribution Zoologique des 
Acariens de la famille des Gamasides. Paris: 1876, 8vo (Pet. 
Nouv. ii. p. 52). 
. Note sur la faculte qu’ont certains Acariens avec ou sans 
bouche, de vivre sans nourriture pendant des phases entieres de 
leur existence, et meme pendant toute leur vie. OR. Ixxxiii. 
pp. 993-995. 
Ixodes is the only genus identified. 
Ixodes extracted from an umbilical tumour in the human subject; 
Nat. Canad. vii. p. 244. 
Zarcon mucronatm, p. 3, and Z. furcatas, p. 4, spp. nn., G. Canestrini 
and F. Fanzago, Atti Soc. Pad. v. fasc. i., Trevigniano, Italy. 
Gamasus plumifer^ sp. n., iid. 1. c. p. 4, Maser, Italy. 
Iphis ovum, sp. n., iid. 1. c., p. 6, Maser. 
Tetranychus vestitus, p. 5, and T. pilosis^ p. 6, iid. 1. c. Maser. 
Caligonus calyx, p. 7, Maser, C. pulcher, p. .7, Trevigniano, C. clavatus, 
p. 8, Maser and Padua, C. cuneatm and C. coronatus, p. 9, Maser, C. mar 
ginatus, p. 10, Maser ; spp. nn. iid. k c. 
Ileteronychus, g. n. (allied to Tetranychus^, II. hirtus, p. 10, Maser 
spp. nn., iid. 1. c. 
Eupalus maseriensis, sp. n.. Maser, iid. 1. c. p. 11. 
