Worm Parasites 6y 



The second species of Trematode was found in the stomach of 

 three of the perch examined, but one or two being found in each 

 fish. It is a worm about 8 mm. long when compressed and mounted, 

 which belongs to an undescribed genus alHed to Azygia. 



Of the Nematodes taken in the perch one fish (No. 1249) con- 

 tained in its stomach several worms of the same species of 

 Spinitectus found in the bullhead. Three fish contained each a few 

 individuals in its intestine of a species belonging to the genus 

 Dacnitoides. The worms averaged 5 mm. in length. 



Pomoxis sparoides (Lacepede) : CaUco Bass. Two fish were 

 examined, in the intestine of one of which (No. 1220) was found a 

 single Acanthocephalan (Vial 32) belonging to the genus Pompho- 

 rhynchus and probably of the same species as those found in the 

 golden shiner. No other parasites were taken. 



Stizostedion intreuni (Mitchill) : Wall-eyed Pike. Nine fish were 

 examined, in one of which no parasites were found. Of the other 

 eight, seven contained Acanthocephala (Vials 5, 84), seven contained 

 Cestodes, and one contained a single Trematode. No Nematodes w^ere 

 taken. 



The Trematode was a distome which was obtained from the 

 stomach of its host. It measures, compressed and preserved, 10 mm. 

 long and 1.5 mm. wide and belongs to the genus Azygia. Worms of 

 this genus have been described from the stomach of many fresh- 

 water fish in America and Europe but have not been found hereto- 

 fore in the wall-eyed pike. 



Three species of Cestodes were taken from the pike. In five of the 

 fish numerous small worms belonging to the genus Bothriocephalus 

 were found, the largest of which was 25 mm. long. The location of 

 these worms was the duodenum and pyloric caeca, from the mouth 

 of which they were sometimes found projecting. In the intestines 

 of two fish a few immature worms belonging to the family 

 Proteocephalidae were found, and in two others a few immature 

 Cestodes of unknown affinities. 



One species of Acanthocephala was found. The intestine of seven 

 of the pike (Nos. 1233a, I247e, 1252) contained many worms 

 belonging to the genus N eoechinorhynchus, in one fish the worms 

 occurring the entire length of the intestine. This primitive genus 

 has also been found in the chain pickerel, the large-mouth black bass, 

 the small-mouth black bass, and the eel in Oneida Lake, and it is a 

 matter of interest that it is so common in these collections. 



Parasites of Birds, Reptiles and Frogs. Ardea herodias (Linn.) : 

 Great Blue Heron. Four birds were examined and two species of 

 Trematodes and two of Cestodes were found. No Nematodes or 

 Acanthocephala were taken. 



In the mouth and upper portion of the oesophagus of all the 

 birds Trematodes belonging to the species Clin osfomum marginatum 

 (Rudolphi) were obtained, the number of worms in each bird vary- 



