. Annals of tropical medicine and parasitology. Parasites. i6o Sub-family CULICINAE Tribe AnoPHELINI Genus Anopheles Eight species were examined, all of which possess genitalia of a somewhat similar form. There is in each case a single, large, highly chitinised spermatheca which is sub-spherical in shape, the length being but slightly greater than the breadth. The duct of the spermatheca, which is chitinised for a short distance, arises obliquely, thus forming an acute angle with one side of the body of the spermatheca. On this side, especially near the distal pole and around the base, the chi
. Annals of tropical medicine and parasitology. Parasites. i6o Sub-family CULICINAE Tribe AnoPHELINI Genus Anopheles Eight species were examined, all of which possess genitalia of a somewhat similar form. There is in each case a single, large, highly chitinised spermatheca which is sub-spherical in shape, the length being but slightly greater than the breadth. The duct of the spermatheca, which is chitinised for a short distance, arises obliquely, thus forming an acute angle with one side of the body of the spermatheca. On this side, especially near the distal pole and around the base, the chilinous wall of tlie spermatheca is pitted with —/-fcvlii. tix A B Fio. I. Anopheles costalis, Thco., posterior extremity of abdomen of A—dorsal !\v ; B—lateral view. X c. i8<;. numerous round or oval areas wliich by transmitted light appear as pale spots. The form of the spermatheca and the distribution of these pale spots furnish differential points in some species, as also do the characters of the cerci. /4. costalis, Theo. (fig. i). Twenty specimens. Posterior extremity of the abdomen blunt, cerci prominent. The eighth segment not retracted within the seventh; sternite not notched in the p. 160. Legend beneath fig. i, and 3rd line from foot, for A. costalis. Thee, read A. costalis, 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 Liverpool School of Tropical Medicine. Liverpool University Press [etc. ]
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectparasites, bookyear19
