. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. » BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY described in aii earlier paper (Parsons, in press). The large occipital foramen {OF) is encircled by a collar-like rim of exo- skeleton, which shall be termed, for convenience, the postocciput (P), although there is no definite suture separating it from the rest of the cranium. Ventrolaterally, it bears a pair of occipital condyles (OC) which project into the prothorax, and just dorsal to these is a pair of shorter lateral apoclemes (LA). The ventral exoskeletal plate of the
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. » BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY described in aii earlier paper (Parsons, in press). The large occipital foramen {OF) is encircled by a collar-like rim of exo- skeleton, which shall be termed, for convenience, the postocciput (P), although there is no definite suture separating it from the rest of the cranium. Ventrolaterally, it bears a pair of occipital condyles (OC) which project into the prothorax, and just dorsal to these is a pair of shorter lateral apoclemes (LA). The ventral exoskeletal plate of the head is usually termed the gula (G) in the Heteroptera, and that term shall be used here. In Gelasto- coris, the anterior edge of the gula is notched to allow the labium to swing downwards. -LB. LA OC Figure 3. Lateral view of the head. The only definite sutures on I he cranium cccur at its sides (Fig. 3). Extending anteriorly from the anterior border of the cephalic gland orifice to the lateral corner of the labrum is a fairly well defined suture. At the corner of the labrum it curves dorsally and then turns posteriorly to run to the posterior border of the glandular orifice. The dorsal part of this suture shall be termed the dorsal suture (D), and the ventral part the ventral suture (V). In adults, the dorsal suture is usually visible for only the anterior third of its length, but it may be seen in its entirety in fifth instar nymphs. The side of the head is quite flat, and forms rather sharp angles with the dorsal and ventral surfaces of the cranium. The sutures divide this flattened lateral. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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