88 Moll. 
MOLLUSCA. 
oviducts is primitive, and their asymmetry an independent new acqui- 
tion in Nautilus and the Myopsidce^ &c. SB. Soc. Erlang, xi. 1878-79, 
pp. 114-141. 
Fredeuicq comes to the conclusion that the changes of colour in the 
skin of Octopus do not generally correspond with mimetic facts, but 
express the differeut emotions, especially anger or fear, and might rather 
be classed with the changes which the vasomotors produce in the human 
face. The skin is dark coloured when the radiant muscles of the chro- 
matophores are contracted in consequence of any irritation ; it is pale 
when they are released. C. R. Ixxxvii. [1878] p. 1042 ; J. R. Micr. Soc, 
ii. pp. 165 & 166. 
Fri^dericq’s observations on the structure and physiology of Octopus 
[Zool. Rec. XV. Moll. p. 8] are also given in Bull. Ac. Belg. xlvi. [1878] 
p. 710: abstract in J R. Micr, Soc. ii. pp. 402-404 & 854. 
O. F. W. Krukenberg gives notes on the mechanism of the chromato- 
phoves in Medone moschata, in his work “ Vergleichende physiologische 
Studien an den Kiisten der Adria” (also as a separate pamphlet). 
An abstract of Klemensiewicz’s paper on the chromatophores of the 
Cephalopods [Zool. Rec. xv. Moll. p. 30], in J. R. Micr. Soc. ii. pp. 
701-703. 
DIBRAlSfGHIATA. 
OCTOPODA. 
Struggle between an Octopus and a lobster, the former conquering and 
devouring the latter, described by Kobelt, Nachr. mal. Ges. 1879, p. 32. 
Octopus punctatus (Gabb) figured from specimen, by Tryon, Manual, i. 
p. 117, pi. xxxiv. fig. 43, California. 
Octopus piscatorum, sp. n., Verrill, Am. J. Sci. (3) xviii. p. 470, Nova 
Scotia, 120 fath, 
Stauroteuthis, g. n., allied to Cirroteuthis, but mantle united to the 
head all round, and to the dorsal side of the sipho. Fins triangular, in 
advance of the middle of the body. Body flattened, soft, bordered by a 
membrane. Webs great, but not reaching the tips of the arms ; suckers 
in one row ; two slender cirri between the suckers, in the greater part of 
the length of the arms, absent at the basis and at the tip. Right arm of 
second pair altered at the tip in the male, S. syrtensis, sp. n., East of 
Sable Island, New England, 250 fath., Verrill, 1. c. pp. 468 & 469. 
Argonauta nouryi (Lorois) figured from specimen, by Tryon, Manual, i. 
p. 138, pi, 1. fig. 127, Pacific. 
.<3i]GorsiDiE. 
Histoteuthis collinsi^ sp. n., Verrill, Am. J. Sci. (3) xvii. p. 241, off Nova 
Scotia, in the stomach of Alepidosaurus ; Tryon, Manual, i. p. 166, 
Taonius hyperhoreus (Steenstrup) ? from the northern edge of the Gulf 
Stream; Verrill, 1. c. p. 243. 
