62 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
stellate chromatin figures consists of an intensely stainable centre and a 
number of radially disposed chromatin rods. The centre is probably 
the nodal point of the chromatin network, a point of intersection around 
which the rest of the chromatin is radially disposed. In the cells 
amitoses are frequent. The other portions of vom Bath’s paper are re- 
ferred to under “ Histology.” 
Secondary Sexual Characters of Male Phronima.* * * § — Prof. C. Chun 
found that the male of Phronima Colletti wholly agreed with what Claus 
described as the male of Ph. sedentaria ; this led him to suspect that the 
real male of this last species had not been seen ; after some search he 
had the good fortune to find it. It is much smaller than the female, 
occurs at the surface at the breeding time in spring, and probably dies 
after pairing. 
In this memoir Chun is concerned with the male’s secondary sexual 
characters. He describes the peculiarities of both pairs of antennae, the 
remarkable claw-hand on the fifth pair of legs, the abdomen and its 
appendages. The main sexual differences lie in the antennae, in the part 
of the abdomen which bears swimming appendages, and in the brood- 
lamellae on the second, third, and fourth thoracic appendages of the 
female. The claw-hand is virtually the same in both sexes, and the 
other appendages are also alike. 
Hotes on Copepods.f — Dr. W. Giesbrecht describes Mirada minor 
Th. Scott. It and M. efferata Dana are the only two well-established 
species. A form recently described by Mrazek is identical with Scott’s. 
He also describes Seridium rugosum , a mature female of which was found 
by Ed. Meyer as a parasite on an Annelid ( Praxilla sp.). 
Cladocera of Basie.J — Herr T. Stingelin gives an account of the 
Cladocera found in the neighbourhood of Basle. After some introductory 
historical and biological notes the author enumerates the species which 
he found in different lakes and pools, in a certain geographical order. 
Passing to the special part of his work, he gives some detailed descrip- 
tions of the species which he has observed. Some of these are, as may 
be supposed, new. 
Phyllopod Crustacea of Japan.§ — Mr. C. Ishikawa gives au account 
of a new species of Daphnia which he dedicates to Prof. Morse. The 
parthenogenetic female is nearly the size of the European D. magna. 
The male, as is usual, is about two-thirds the length of the female, and 
differs considerably in general shape. Full details are given as to the 
characters of this species, which is found plentifully in ponds and ditches 
round Tokyo. It is one of the earliest Cladocera to appear in the spring, 
and the earlier forms are, as usual, all parthenogenetic females. 
Nauplii of Lepadidae.jj — Prof. C. Chun describes three types of 
nauplius which, for the sake of convenience, he names eques , hastatus, 
* Biblioth. Zool. (Leuckart and Chun), Heft 19, 1895, pp. 109-29 (2 pis. and 
1 fig.). t MT. Zool. Stat. Neapel, xii. (1895) pp. 217-26 (1 pi.). 
t Rev. Suis. Zool., iii. (1895) pp. 161-274 (4 pis.). 
§ Zool. Mag., vii. (1895) pp. 137-42 (1 pi.). 
|| Biblioth. Zool. (Leuckart and Chun), Heft 19, 1895, pp. 79-106 (2 pis. and 
7 figs.). 
