. Bonner zoologische Monographien. Zoology. UTEVSKY, ANTARCTIC PISCICOLID LEECHES. FIG. 5. Location of the mouth-pore: Mp, mouth-pore; P, proboscis. dal processes of the posterior cham- ber of the crop. In the family Pis- cicolidae, the posterior c rop caeca show different degrees of junction: they may be completely separated, nontotaly fused with various num- ber and size of fenestrae, or com- pletely fused together without fe- nestrae. The posterior crop caeca may be absent. The intestine has various numbers of lateral cham- bers (5 at most). They show diffe- rent degrees of developing and m
. Bonner zoologische Monographien. Zoology. UTEVSKY, ANTARCTIC PISCICOLID LEECHES. FIG. 5. Location of the mouth-pore: Mp, mouth-pore; P, proboscis. dal processes of the posterior cham- ber of the crop. In the family Pis- cicolidae, the posterior c rop caeca show different degrees of junction: they may be completely separated, nontotaly fused with various num- ber and size of fenestrae, or com- pletely fused together without fe- nestrae. The posterior crop caeca may be absent. The intestine has various numbers of lateral cham- bers (5 at most). They show diffe- rent degrees of developing and may have lateral processes of different structure. The posterior chamber may be modified into the "folded organ". The intestine is terminated by the rectum, which may be tu- bular or with a side dilation of vary- ing size (Fig. 9). Digestive system In piscicolid leeches, the proboscis is an eversible muscular tube lying within a proboscis cavity. It may extend from ganglion 1 to ganglion 5 of the ventral nerve cord. The proboscis is connected with the short esophagus, which often has diverticula located be- tween ganglia 3 and 5. The esophagus opens into the long crop. The crop usually possesses 6 or 5 cham- bers, but the crop may be tubular without distinct chambers. The crop chambers may be ovoid or dia- mond-shaped, with lateral processes of various form or without them. The posterior crop caeca are cau-. 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 Bonn, Zoologisches Forschungsinstitut und Museum Alexander Koenig
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