. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. b BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY one fourth instar nymph. One of the nymphs was fixed in Carney's fluid, while the rest were preserved in alcoholic Bouin's solution. The heads were prepared for sectioning according to the Peterfi technique, embedded in 60-62° Tissuemat, and sec- tioned at 7 \i. The slides were stained in either ]\ialIory's triple connective-tissue stain or Delafield's hematoxvlin and eosin. EXTERNAL ANATOMY Figure 1 shows the dorsal surface of the gelastocorid head. It is triangular in shape
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. b BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY one fourth instar nymph. One of the nymphs was fixed in Carney's fluid, while the rest were preserved in alcoholic Bouin's solution. The heads were prepared for sectioning according to the Peterfi technique, embedded in 60-62° Tissuemat, and sec- tioned at 7 \i. The slides were stained in either ]\ialIory's triple connective-tissue stain or Delafield's hematoxvlin and eosin. EXTERNAL ANATOMY Figure 1 shows the dorsal surface of the gelastocorid head. It is triangular in shape, with prominent, laterallj^-projecting compound eyes, and with two ocelli. Between the ocelli is a broad, U-shaped indentation, and two shorter grooves lie lateral to each ocellus. These indentations produce, on the inner surface of the cranium, ridges for muscle attachments. Anterior to them. 0 u vx Figure 1. Dorsal view of the head. 14 X. Figure 2. Ventral view of the head. lie a pair of small pits, which mark the points at which the clypeal connectives (to be discussed later) contact the exo- skeleton. Although Spooner's (1938) diagram of the head of a Gelasto- coris nymph shows an epicranial suture which forks in approxi- mately the same position as the U-shaped indentation, neither the fifth instar nymphs nor the adults examined in the present study showed such a suture. Thus the boundaries of the facial sclerites are difficult to determine. According to Snodgrass. 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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Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
