450 
SUMMARY OF CURRENT RESEARCHES RELATING TO 
mined the values of correlated variations in a number of the hard exo- 
skeletons of the common Prawn. One thousand adult females were 
obtained from Plymouth, and twenty-two measurements were made of 
each. The values were found to range themselves with a fair degree 
of symmetry round the median value, and to correspond more or less 
accurately to calculated probability curves. 
Blind Cambarus from Florida.* * * § — Dr. E. Lonnberg has found in 
subterranean water in Florida a blind species which he proposes to call 
Cambarus acherontis ; this is the third blind species found in the United 
States, and is quite distinct from the more northern forms. 
Copepoda of Liverpool Bay.f — Mr. I. C. Thompson, in his revised 
report, states that whereas, before 1885, only six species of marine 
Copepods were known from the Liverpool area, 136 are now enumerated, 
of 'which 18 are new to the British species, and of these 11 are new to 
science. The report must, therefore, be studied both by those who are 
interested in the British fauna, and those who are specialists in Cope- 
poda. 
Cirripedia.J — M. A. Gruvel, in an extended memoir, deals with what 
he calls normal Cirripedes ; he finds little differences in the broad lines 
of their organization; owing to the restricted area investigated he is 
unable to generalize or to consider the relations of these Cirripedia to 
the other Entomostraca. The structure of the calcareous plates of the 
test of JBalanus tintinnabulum has been fully investigated, and salivary 
glands, the presence of which was not suspected, have been demonstrated 
to exist. The possession by Balanus of respiratory setae is described, 
and the resemblance of the nervous system of the Balanidae to that of 
the Lepadidae is pointed out ; ganglia, whose function is to augment the 
tactile secretion, have been discovered in the cirri, and vesicular organs 
in Lepas anatifera. The resemblances between the eye of Cirripeds and 
of other Entomostraca are pointed out. 
In the gastric juice two free acids have been found, one organic and 
present in small quantities, the other mineral and in greater quantities. 
The acid reaction of the leucocytes is demonstrated, and the author 
describes the part that they play in digestion and excretion. Experi- 
ment has shown that the red pigment of the blood has no respiratory 
function ; excretion is effected by the renal glands, the pigmented wall 
of the body, and the cement glands. Cirripedes are able both to taste 
and to smell, but not to hear. M. Gruvel has seen for himself the 
process of reciprocal fecundation, and has reason to believe that self- 
fertilization also occurs. 
Vermes. 
a. Annelida. 
Structure of Euphrosyne.§ — Prof. W. C. McIntosh gives an account 
of some parts of the anatomy of this Annelid — the body-wall, the 
caruncle or highly sensitive tongue-shaped organ, the branchiae, the 
* Zool. Anzeig., xvii. (1894) pp. 125-7. 
t Trans. Liverpool Biol. Soc., vii. (1893) pp. 175-230 (26 pis.). 
X Arch. Zool. Gen. et Exper., i. (1893) pp. 401-610 (9 pis.). 
§ Quart. Journ. Micr. Sci., xxxvi. (1894) pp. 53-66 (2 pis.). 
