C05LENTERATA. 
G35 
Gonothyrcea liyalina, Hinclcs, 1. c. p. 297, Shetland. 
Sertularia altenuata, llinclcs, 1. c. p. 298, North Devon, Brighton, &c. 
Sertularia actoni, Philippi, 1. c. p. 120, Straits of Magellan. 
Dynamena hidentata, Philippi, 1. c. p. 120, with the preceding species. 
Euco 2 w 2 '>olygena, A. Agassiz, 1. c. p. 8G, Nahant, on Laminaria ; E. imra- 
sitica, A. Agass. 1. c. p. 87, on a species of Ecnella^ parasitic on Orthagoriscus 
mola at Nahant j E. articulata, A. Agass. 1. c. p. 89, Nahant. 
PuYSOPHORIDiE. 
Nanomia cara (A. Agass.). A very detailed account of this species is 
given hy Agassiz, 1. c. pp. 200-213, figs. 331-350. 
LucErnaridvE. 
Van Bbneden (1. c.) describes the following as found on the Belgian 
coasts : — Cyanea capillata (pp. 77, 84), Rhizostoma cuvierii, Lamk. (p. 84), 
Chryfiaora hyoscclla, Esch. (p. 85), Aurelia aurita, and A. cruciata. 
Agassiz (/. c. p. 49) mentions that Dactylometra (Pelagia) qumquecirra was 
always found accompanied by a species of Olupeoid, twenty to thirty having 
been found swimming in the fringes of the actinostome. Every now and 
then one is swallowed by the Pelagia without disturbing the others. 
Rhizostoma aldrovandi^ D. Oh. Noskin (/. c.) describes briefly and figures 
the larva of this form. 
MEDUSIDiE. 
A. Agassiz {1. c, p. 55) proposes to remove the Trachynemidoi from the 
vicinity of the Eucopidce, and to place them with the Geryonidce in a sub- 
order closely allied to AEginidce. 
Van Beneden {1. c.) describes the following as found on the Belgian 
coasts : — Thawnantias cymbaloides (auct.), T. liemisphcerica (0. E. Miill.), 
Mesonema henleanay Oceania sanguinolenta, and Lizzia octopunclata (Sars). 
Geryonia prohoscidalis (Geg.)= Carmarina hastata (Hack.). Noskin (1. c.) 
gives aii account of the early stages of this Medusoid, which differs in some 
respects from that given by Hiickel. 
Ptychogena, g. n., A. Agassiz, 1. c. p. 137. The Medusa for which this genus 
has been established shows the intimate structural connexion between Stauro- 
p>hora, Melicertum, and Polyorchis — the structure of the genital organs in an 
intermediate state of development between organs where the folds of the 
actinostome are lost in the genital folds, as in Staurophora^ and the other cx- 
ia’omo, where wo have pendent genital organs attached to one extremity of 
diverticulate chymiferous tubes, as in Poly orchis. P. lactea, sp. n., A. Agass. 
p. 137, figs. 220, 224, Nahant. 
Haeckee ( Jenaische Zeitschr. i. pp. 326-327) gives a classified list of the 
Oraspedote Medusae, 28 in number, observed by him at Nice in March and 
April 1864, and describes the following new genera and species (see also 
under Corynidee ) : — 
Oelorchis, g. n., Hacck, l.c. p. 331. Typo of a now family, Octorchidee. 
Stomachal peduncle solid, quadrangular, with a radial canal in each angle ; 
genitalia in eight masses, — four in stomachal peduncle, four in subumbrella. 
Sp. O. gegenhauri, sp. n., Ilaeck. 1. c. p. 331. 
Mitrocoma, g. n., Haeck. 1. c. p. 332. (ALquoridee.') Allied to Tiaropsis\ 
margin of disk with 500-600 delicate tentacles, of which about 80 are stronger 
