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| Land, J. van der; Dienske, H.. |
| INTRODUCTION Species of the genus Gyrocotyle are quite common intestinal parasites of chimaerids. As far as we now know, each parasite species is restricted to one host species. In each host species, however, a second and much rarer species of Gyrocotyle may occur besides the common one. The common species are systematically related to each other, and so are the rare ones. In the present paper two species of the group of rare species are described. Their existence has been known already for a long time, but, for different reasons, they have never been recognized as separate species. DEFINITION OF SOME TERMS Ι. Spines. — We recognize two types of spines in the genus Gyrocotyle, viz., the urna-type and the confusa-type. In spines of the urna-type the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.36. |
| Ano: 1968 |
URL: http://www.repository.naturalis.nl/record/319350 |
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| Dienske, H.. |
| CONTENTS Introduction .................. 83 The identification of the sampled specimens.......... 85 The variability of the studied characters........... 90 ι. The external characters.............. 90 a. The coat colour............... 90 b. The length of hairs.............. 91 c. The length of the meatal lobe of the ear........ 91 d. The tail................. 92 e. The feet ................ 93 2. The shape of the molars.............. 93 3. The characters of the skull............. 102 4. The characters of the mandibles............ 105 5. Skull with mandibles............... 106 6. Skin with skull and mandibles .... ......... 106 Diagnoses of Microtus arvalis and Microtus agresüs........ 106 References................... 107 INTRODUCTION A number of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 42.84. |
| Ano: 1969 |
URL: http://www.repository.naturalis.nl/record/318314 |
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