a^gTROPODA (nudibranchia). 
Afoll. 63 
TrIT0N1IDA5. 
The family restricted to Tritonia (Cuv.), including Candiella (Gray, 
1850) and Nem{at]ocephala (Costa, 1869), and characterized; R. Bergh, 
P. Ac. Philad. 1879, pp. 96 & 96. 
Tritonia. History of the genus, 18 known species enumerated, and T. 
tetraqmtra (Pallas), Kurile and Aleutian Islands, described ; id. 1. c. 
pp. 95-105, anatomical figures, pis. iii. figs. 13-16, iv. figs. 5-12> v. figs. 
1 & 2 . 
Marionia, g. n. Externally near Tritonia ; stomach armed with knife- 
like teeth ; liver divided into two separate portions. M. herghi, sp. n. 
Vayssiere, 0. R. Ixxxv. [1877] p. 299, & J. de Conch, xxvii. [1879] 
pp. 106-117, pi. vii.. Gulf of Marseilles, 50 metres (? = Tritonia hlnin- 
villea, Risso, 1826). 
MelihcBa lonchocera, sp. n., Martens, MB. Ak. Berl. 1879, p. 739, 
Qiierimba Islands, Coast of Mozambique. 
Dendronotidao. 
A new family proposed by R. Bergh, containing the two known genera 
Dendronotus and Campaspe (Bergh, 1863) ; P. Ac. Philad. 1879, pp. 88 
& 89. 
Dendronotus. 4 known species enumerated, with D. qnirpureus, Alaska, 
and dalli, Behring’s Strait, spp. nn., id. 1. c. pp. 89-94, pis. i. figs. 18-21, 
ii. figs. 9-12, iii. figs. 2-12. 
Dendronotus arhorescens (Mull.), var. n. aurantium ; Friele, JB. mal. 
Ges. vi. p. 284, Spitzbergen. 
Molidwm. 
S. Trinchese has observed that in Amphorina ccerulea (Mont.) the con- 
tents of the hepatic ducts are carried back to the stomach by periodical 
extension of the latter; Rend. Ac. Bologn. 1878-79, p. 170. 
A<joUs papillosa (L.) : typical form from the Shumagin Islands, var. n. 
pacifica^ Alaska, Bergh, 1. c. p. 75, pi. i. figs. 1-6, jaw and radula. 
^olis hicincta, sp. n.. Martens, MB. Ak. Berl. 1879, p. 739, Ibo, Coast 
of Mozambique. 
Flahellina. 6 known species enumerated ; F. iodinea (Coop.), Eastern 
Pacific, San Diego to Puget Sound, described by Bergh, 1. c. p. 79 ; radula, 
pis. i. figs. 15-17, ii. fig, 16. 
Ilerniissenda (Bergh, 1878) opalescens (Coop.), San Diego to Sitka, 
fully described ; id. 1. c. pp. 81-85, anatomical particulars, pis. i. fig. 9, 
ii. figs. 1-6. 
Coryphella sp. : buccal part described; id. 1. c. p. 78, pis. i. figs. 13 & 
14, ii. figs. 7 & 8, Aleutian Islands. 
Coryphella rutila^ sp. n., Verrill, Am. J. Sci. (3) xvii. p. 314, Eastport, 
Maine. 
Cuthona stimpsoni, sp. n., id. ibid., Eastport. 
