HETEROPODA (POLYPT.ACOPHORA) . 
Moll 77 
COCHLOSYRINGIA, n. subord. 
For Entocolax , n. g., for E. ludwigii, n. sp., endo-parasitic on M.yrio- 
trochus rinkii, from Beriug’s Sea. It is an acephalous tube, whose knob- 
like anterior end penetrates the body-wall of the host ; jaws, radula, 
circulatory, and respiratory organs are absent ; there is a rudimentary 
efferent duct, and the ova are liberated by tearing the wall of the ovary ; 
Voigt. 
FOLYPLAGOPEORA. 
ChITONIDJE. 
Acanthochites hamatus , p. 191, Algeria, A. tristis, A. turgidus, A.jucundus , 
p. 194, Australia, n. spp. ; Rochbrune (4). 
Acanthopleura vaillanti , Suez Canal, A.afra, Cape of Good Hope, p. 192, 
A. rawakiana, p, 195, New Guinea, A. balansce , p. 197, Australia and 
New Caledonia, n. spp. ; id. t. c. 
Choitopleura thoouarsiana , p. 191, Kamtskatka, C. dacrydigera, p. 193, 
Central America, 0. biarmata , p. 195, “Port du roi George,” n. spp. ; id. 
t. c. 
Cryptoconchus stewartianus , n. sp., New Zealand; id. t. c. p. 194. 
Cryptoplax montanoi, p. 190, Borneo, G. peroni, p. 193, Australia, C. 
caledonicus. G. hensteli, p. 196, G. unciferus , p. 197, New Caledonia, n. spp. ; 
id. t. c. 
Gymnoplax hamyi , G. insuloris, Cape Verd Is., n. spp.; id. (1) pp. 26 
& 27. 
Lepidopleurus botta ;, n. sp., Red Sea ; id. (4) p. 192. 
Ornithochiton decipiens , n. sp., Cook’s Straits ; id. t. c. p. 196. 
Schizochiton polyoplitahnus \sic\ , n. sp., Philippines ; id. t. c. p. 191. 
Tonicia fontainei, n. sp., Chili ; id. t. c. p. 193. 
APLAGOPHORA. 
Neomenii dac. 
Dondersia ., n. g., violet in colour, with two kinds of spicules, blunt 
needle-shaped and scoop-shaped, the latter with the broad end directed 
outwards ; few layers of spicules in the thickness of the skin ; pedal fold 
triangular in section ; no dorso-terminal sensory papilla ; radula small 
and clearly defined, freely projecting into the lumen of the oesophagus ; 
two short latornlly-plncod salivary glands ; sovoral buccal glands arouud 
the oesophagus ; a strong commissure between the lateral and pedal nerve- 
cords • sublingual commissure not distinctly demonstrated; byssus-gland 
consisting of three contiguous lobes with free thick threads, for D. /es- 
tiva, n. sp. ; Naples : Hubreciit. 
Proneomcnia vagans and P. desiderata on rhizome of Posidonia , and P. 
aglaophenice on Aglaophenia myriophyllum , n. spp., shores of Provence ; 
Marion & Kowai.ewsky. 
