However, we have created two new categories for radiolar eyes located on the operculum
of serpulids: type oS (opercular-simple) and type oC (opercular-compound) (Fig.
These two species can be separated by the shape of the anal operculum
(crescentic in L.
Moreover, the development of the operculum
occurred in H.
Precentral Artery (PCA): The artery extends out on the medial surface of the operculum
and supplies the posterior parts of the middle and inferior frontal gyri as well as the lower parts of the precentral gyrus.
The gill arches were entirely covered by operculum
is a hard and horny structure that exists in many marine and freshwater snails.
A common way to identify them is by their light olive color and the distinct bright red outer rim on their ear flap or operculum
4 SELECTED EXAMPLES OF SINGULAR AND PLURAL FORMS Singular/Plural Example a/ae gingiva, gingivae ex/ices index, indices i/us alveoli, alveolus is/es diagnosis, diagnoses on/a ganglion, ganglia um/a operculum
, opercula BOX 1.
Anal somite with semicircular smooth operculum
(Figures 1A, C); with ventral spinules as shown (Figure 1D).
8): head brownish dorsally, grading to whitish ventrally; operculum
with blackish stripe crossing uppermost portion with silvery patch immediately below; light brown on back, grading to whitish ventrally; each scale of side with thin brown margins imparting overall network appearance; blackish mid-lateral stripe on side from pectoral-fin base to caudal-fin base, poorly developed and interrupted on anterior half, but distinctly wider (covering up to 3 scales) on posterior half; second dorsal, anal, pelvic and caudal fins generally dusky grey with blackish sub-marginal stripe (more prominent on dorsal fin) and narrow whitish margin on dorsal and anal; caudal fin with narrow, blackish upper and lower margins; pectoral fins translucent.
Similarly pericoronitis manifested most commonly in class II impacted molars which is prob- ably because they are half visible in the mouth with an operculum
and do not have a good inter-cuspation with maxillary counterparts.
Opercular pad elliptical, ~80% as wide as dorsal surface of foot; attachment with operculum
occupying ~ 70% of its area (Fig.