A Dr. Johnston on British Annelides. . 
triangular-ovate bluntly-pointed spreading segments of the limb. 
Anthers cordate-ovate, apiculate. Corona closely adpressed to 
the corolla ; its processes rather shorter than the tube of the co- 
rolla, broad, adpressed, deeply notched : the lobes diverging, trun- 
cate and fimbriated ; separated by narrow linear interspaces, which 
occasionally extend almost to the base of the corolla, but usually 
the corona is continuous throughout half its length. The form of 
the summit of the coronal processes will be seen to vary consider- 
ably, but always retains a general outline very different from that 
of any other species with which I am acquainted. Germen round- 
ish. Styles seated upon elevated promment tubercles. Stigmas 
simple. 
Introduced from the East Indies with the seed of Melilotus 
officinalis, upon which plant it preys. 
EXPLANATION OF PLATE I. 
Fig. 1. Cuseuta approximata, Bab. 
a. The growing plant. 
b. Clusters of flowers. 
e. The calyx with an unopened corolla. Magnified. 
d. An expanded flower. Magnified. 
e. The corolla greatly magnified and laid open in order to show the 
structure and proportions of the corona. 
e'. Slightly different forms of the corona observed in other speci- 
mens. 
jf. The germen. 
Lig. 2. Cuscuta Epithymum, Murr. 
c, d, & e. The calyx, expanded flower, and the corolla laid open, 
showing the corona. 
Fig, 3. Cuscuta Trifolii, Bab. 
c, d, e & f. The same parts as before. 
Il.— Miscellanea Zoologica. By Grorcr Jounston, M.D., 
Fellow of the Royal College of Surgeons of Edinburgh. 
[Continued from vol. xv. p. 148.] 
[With a Plate. ] 
Class ANNELIDES. Order Errantes. Family Nereipes. 
Section NEREIDES NON-TENTACULATA, 
No tentacular cirri: the antenne rudimentary. 
Genus Potiicita*, Johnston. 
Cuar. Body serpentiform: head rather indistinct, with three 
small frontal antennee: eyes four: proboscis large, without jaws, 
* This worm has been already published under the name of Bebryce 
Peripatus (Thompson’s Rep. on the Fauna of Ireland, p. 273), but, having 
discovered that the generic name has been used by Philippi, I am under 
the necessity of changing it. 
