8 Crust. 
CRUSTACEA. 
tella. He suggests that the loss of the faculty of change after the extir- 
pation of the eyes may simply result from the violent attack on the 
nervous system, and not directly from blindness ; and he thinks that the 
dilatation of the pigment-cells may have some relation to a sensation of 
cold in the animal. Arch. mikr. Anat. xix. pp. 591-597, 
Change of colour in Atyoida, Palcemon, Gelasimus, and Nautilograpsus, 
the animals being ordinarily darker in their native haunts, and becom- 
ing by degrees pale in captivity, observed by F. Muller, Kosmos, viii. 
pp. 472 & 473 ; abstract in J. H. Micr. Soc. (2) i. p. 452. 
General notes on some species of Crustacea which live in darkness by 
M. Weber, Tijdschr. Nederl. Dierk. Ver. v. pp. 167-173. A new species 
of Trichoniscus {leydigi), found under stones on the shores of the Zuyder 
See, exhibits all the properties of cavernicolous animals, and the author 
thinks it might have originated from T. pusillus^ its light-shunning habits 
being accompanied by a decrease of pigment and subsequent modifica- 
tion in the genital organs. 
A. Cortes states that the eggs of Artemia salina (L.) survive dessi- 
cation for three years, and subsequent heating in boiling water ; C. R. 
xciii. pp. 750-752, and Ann. N. H. (5) viii. pp. 456-458. 
Daphniay GammaruSy and Asellus do not revive when frozen ; Cyclops 
perishes when exposed to — 6*^ Cols, for two hours. Hodel, “ Uber das 
vitale Temperatur-minirnum wirbollosor Thiero” (Diss. Inaug.), Halle: 
1881, pp. 25, 26, & 34. 
9 . Deformities. 
W. Faxon describes and figures a number of deformities in the large 
claws of the lobster, taken from a collection of nearly two hundred 
deformed lobster-claws in the Museum of Comparative Zoology, and 
others of several other Crustacea ; he also mentions and classifies other 
known deformities and monstrosities of Crustacea, described by various 
authors, including dimorphism and hermaphroditism. Bull. Mus. C. Z. 
viii. pp. 257-274, with 2 pis. ; abstract in J. R. Micr. Soc. (2) i. p. 599. 
Geographical Distribution. 
1 . Fresh-water and Terrestrial Crustacea. 
Grasmere Lake, Westmoreland. Leptodora hyalina (Lillj.), Hyalo- 
daphnia kahlhergensis (Schodler), Holopedium gihherum (Zaddach), 
Latona setifera (Strauss), and Bythotrephes, sp. n. ? not before known as 
British, and some other rare Entomostraca ; E. Ray Lankester, Ann. 
N. H. (5) ix. p. 53, and J. R. Micr. Soc. (2) ii. p. 187. 
Netherlands. New or little-known terrestrial Tsopoda enumerated by 
M. Weber ; Tijdschr. Nederl. dierk. Ver. v. pp. 173 & 174. 
Berlin. Branchipus gruhii (Dybowski) and Limnetis hrachyura 
(Mlb.); Martens, SB. nat. Fr. 1881, p. 75. 
Lakes of the Tatra^ Carpathian Mountains. Holopedium gihherum 
(Zadd.), Daphnia p>^tex and longlspina (Mull.), Bosmina longirostris 
(Mull.) ?, Eurycereus lamellatus (Mull.), Acroperus leucocephalus (Koch), 
