210 
SUMMARY OP CURRENT RESEARCHES RELATING TO 
Parasites from Intestine of Zebra.* * * § — Herr A. Collin reports that 
Gastrophilus, Gastrodiscus, and Tsenia liave been found in the intestine 
of a Zebra. Of tbe dipterous parasite 125 examples were present ; the 
species is probably G. equi. Gastrodiscus polymastos was first found by 
Sonsino in Egyptian horses; the tape- worm is probably T. Zebrse, first 
mentioned by Sauber in 1779, and named by Eudolphi ; it is very close 
to T. per foil at a of the Horse. 
Parasites of Fishes.f — Sig. P. Sonsino describes a number of 
cndoparasites in fishes : — In Mugil cephalus, Microcotyle mugilis Vogt, 
Distomum viviparum Van Beneden, I), pachysomum Eysenliardt, Lecano- 
cephalus annulatus Molin, and Echinorhynchus agilis Eud. ; in Tinea 
vulgaris, Trisenophorus nodulosus E. (larva), Echinorhynchus angustatus E., 
and Monobothrium tuba Dies. ; in Labrus niixtus, Distomum commune 
Olsson, and D. pulchellum Eud. ; in Crenilabrus griseus, Distomum com- 
mune Olsson, Echinorhynchus Labri E., and a larval Agamonema (sp. ?) ; 
in Lophius piscatorius, Distomum macrocotyle D., D. cesticillus Molin, 
Gastcrostomum gracilescens E., and Scolex polymorphic E. ; in Trigla 
cuculus, Distomum rufoviride E , Trocliopus tubiporus, and Echinorhynchus 
propinquus ; in Box salpa, Monostomum orbicolare E., Distomum fr actum 
E., Microcotyle salpse Par. ; in Umbrina cirrhosa, Distomum cesticillus 
Molin, Phylline Scisense van Beneden, Diplectanum sequans Dies, Calceo- 
stoma inerme , Lecanocephalus annulatus, Ascaris Scisense E. ? ; iu Scisena 
umbra, Phylline Scisense, Calceostoma elegans van Ben. and Hesse, and 
Diplectanum Scisense Dies ; in Esox lucius, Trisenopho'i-us nodulosus E., 
Distomum tereticolle E., and Echinorhynchus angustatus E. ; in Acipenscr 
nasus, Amphilina foliacea E. ; in Orthagoriscus mola, Distomum cont rtum 
E., D. nigroflaimm E., Tristomum molse Blanch., aud T. papillosum Dies. 
Sonsino found four tailed forms of Distomum. He also discusses the 
species of Onchocotyle and Trocliopus. 
Amphistomum chordale.} — In making sections of the notochord of 
Protopterus annectens Herr E. Burchhardt found evidences of the 
presence of a Trematode ; this is au organ in which these parasites have 
not yet been detected ; owing to the thickness of the chordal sheath the 
parasites must enter when the fish is young. A short account of the 
worm is given. 
New Species of Microcotyle.§ — Sig. P. Sonsino describes from 
Umbrina cirrhosa a new species of Microcotyle, which he names M. 
Pancerii. 
Species of Both.riocephalus.|| — Herr F. Matz has studied numerous 
species of Bothriocephalus, especially with respect to their specific 
distinctions and their reproductive organs. The characters of B. latus 
cannot be attributed without modification to the other species. Matz 
describes B. hians Dies, B. ditremus Creplin, B. dendriticus Nitzsch, 
B. punctatus Eud , B. claviceps End., B. infundibuliformis Eud., B. 
rugosus Eud., B. microcephalus Eud., B. fragilis Eud., B. plicatus Eud., 
* SB. Ges. Naturf. Freunde, 1891, pp. 85-8. 
+ Atti Soc. Tosc. Sci. Nat., vii. (1891) pp. 253-G5. 
1 SB. Ges. Naturf. Freunde, 1891, pp. 63-4. 
§ Atti Soe. Tosc. Sci. Nat., vii. (1891) pp. 303-4. 
|j Arch. f. Naturgesch., lviii. (1892) pp. 97-122 (1 pi.). 
