HYDROIDS OF BEAUFORT, NORTH CAROLINA. 



365 



specimens in that species, but named them instead Lovenella gracilis, though he states that the tropho- 

 somes appear to be identical. To quote the descriptions of the gonosome given by these two investi- 

 gators is sufficient to show that there is strong evidence of the identity of the species. 



Hincks' description is as follows: 



" Gonothecae borne on the stems and producing free medusiform zooids. 



"Gonozooid.— Umbrella (at the time of liberation) globose; manubrium short, with a simple 

 orifice; radiating canals 4; marginal tentacles of two kinds — 4 in connection with the radiating canals, 

 of which 2 only are fully developed at the time of birth, springing from nonocellated , bulbous bases, 

 4 intermediate, of small size, without bulbs, slightly clavate, with thread-cells only toward the ex- 

 tremity (?); lithocysts 4, one of which is placed halfway between each pair of the larger tentacles 

 and close to one of the smaller. 



"The gonotheca of Lovenella clausa is borne on a rather long-ringed pedicel, which rises from the 

 stem a short distance below the calycle. It is elongated in form, tapering off from the truncate top 



Fig. 2(>.—L<nimeUa clausa (Loven). A, trophosome: B. Bonanza (after Hartlaub); C. gonangium (after Hincks); D, gonailKiuin 



(after Clarke). 



to the base, the sides present a slightly sinuated outline. It contains many gonophores, from each of 

 which a medusiform zooid is liberated." 



Clarke says; 



"Ck)nosome. — Gonangia developed from the base of the hydrothecal peduncles, very long and 

 slender, largest at the distal end and tapering toward the base, supported on short pedicels consisting 

 of one to three annulations; from three to five planoblasts developed in each gonangium, aperture 

 terminal. 



"Planoblasts 24 hotu-s after liberation round and somewhat flattened in outline, microscopic in 

 size; radial canals four, connected by a circumferential canal at the periphery; marginal tentacles 

 six, of which two are very large, separated at the peripheral extremities by two opposite chymiferous 

 tubes, the four smaller tentacles disposed one on either side of each of the large ones; at tlie points of 

 the margin of the bell where the two other chymiferous tubes join the peripheral canal there are rounded 

 processes which have the appearance of rudimentary tentacles, as yet undeveloped; lithocysts four in 



85079° — Bull, jo — 12 24 



