24 Arachn. 
ARACBNIDA. 
Africa. A. hidens, sp. n., E. Simon, Ann. Soc. Ent. Fr. (5) x. p. 12G, 
Pekin. 
Platyhunus arhiUeus, sp. n., E. Simon, Bull. Soc. Zool. Fr. iv. (1879) 
p, 2(i;l, Ilo de Porquerollcs. 
Blanc, D. II. Anatomie ot Pliysiologio do Pappareil sexuel male dos 
Plialangidos. Bull. Soc. Vaud. xvii. pp. 49-77, pis. iv.-vi. 
Treats very fully under the following heads on : — i. Anatomy and Phy- 
siology of the male sexual apparatus of Phalangids. ii. Anatomy of the 
testicle ; spermatogenesis ; and description of the spermatozoa and their 
passage to the glans. iii. How contact between the spermatozoa and the 
ovum is effected, iv. Hermaphroditism in male Phalangids. The works 
of Lister, Treviranus, Fulk, Menge, and Krohn, as well as the very 
recent papers of De Graaf and Loman are referred to and discussed. 
On the question of hermaphroditism in the male Phalangid, the author 
defines hermaphroditism to be of two kinds: — i. self-sufficient, giving 
the power, sometimes, of self- fecundation ; ii. rudimentary, one only 
of the sexual elements coming to maturity. The occurrence of ova in 
the testicles of Phalangids belongs to the second kind. The species exa- 
mined and dissected are Phalangium cornutum, Linn., P. opilio^ Latr., P. 
longipes^ Koch, and P. rotundam, Latr. 
PYCNOGONIDEA. 
Wilson, Edmund B. Report on the Pycnogonida of New England and 
adjacent waters. Rep. U. S. Commission of Fish and Fisheries, 1878 
[published 1880], pt. vi. pp. 4G3-506, pis. i.-vii. 
Practically a repetition of the same author’s treatise in Tr. Conn. Ac. 
V., noticed in Zool. Rec. xvi. Arachn. pp. 22 & 23. Fifteen species belong- 
ing to 9 genera are discussed ; 5 of them are European, occurring also in 
Greenland. Pseudopallene, Wils., and AnoplodactyluSy Wils., are recha- 
racterized, and the following species described and figured besides those 
mentioned in Zool. Rec. xvi. : — 
Nymphon strcemi, Kioyer, = giganteum, Goodsir, macrum, sp. n., longi- 
tarse, Kroy., grossipes, Fab., mixtum and hrevitarse, Kroyer, and hirturuy 
Fab., = hirtipesy Bell, = feinoratum, Leach; pp. 486-497, pis. iv. 
figs. 21-23, v.-vii. ; the recently hatched larva of the last, pi. vii. fig. 41. 
Phoxichilidium maxillare, Stimps. ; pp. 480 & 481, pi. iii. figs. 12-15. 
Achelia spinosa, Stimps. (as Zetes), and A. scabra, sp. n. ; pp. 473-47G, 
pi. i. fig. 4, & pi. ii. fig. 8. 
Pycnogonum littorale, Strom ; pp. 4G9-471, pi. i. figs. 1-3. It some- 
times clings to Actinidw, and P. pelagicuniy Stimps., is evidently' only an 
immature form of it. 
5 spp. of Pycnogonids from Barents’ Sea, collected by W. T. Grant, 
enumerated by W. S. M. D’Urban, Ann. N. H. (5) vi. p. 2G3. 
Nymphon robustiim, Bell : adult female from Discovery Bay, Green- 
land, described by E. J. Miers, J. L. S. xv. p. 72. 
