PARASITES OF FISHES OF THE WOODS HOLE REGION. 443 



ACANTHOCEPIIALA. 



1. Echinorhynchus pristis Rudolphi. 3, pp. 530-531, pi. lvi, figs. 31-3S. Var. lenuicornls. 3, jip. 



531-532, 1)1. LVI, figs. 39-41, and pi. Lvii, figs. 42-53. 



NEMATODES. 



2. Axrarin sy. Immature. Intestine. An imniatnre female, 17 nun. long. Lateral ahe for about 1 



nun. back of head. Postanal region souiewliat elongate, fine spines at posterior tip. Longi- 

 tudinal nuisc-le liundles .strilcingly prominent in acetic acid. Resembles No. 1 \nider Microyarlus 



lluliroil. 



CKSTODES. 



3. Dihothriuiii rcxlifuriiie Linton. Intestine. !2, \>\i. 722-728, pi. i, (igs. l-lil. 



4. Nlii/iirliohiilliriiim xpeciosum Linton. Larv;e encysted on viscera. 4, ])p. ,SII1-,S(I5, pi. ]..\v, figs. 4,5. 



TKKMATOIIKS. 



5. JHsloiiiiiiii (i/Vc/i.s Linton, fi, pji. 534-535, pi. i,i, tigs. 5, t;, ami pi. in, tig. 1. 



Gasterosteus bispiuosus, Tiro-njiincil Slirklihack. 



TKKMATODES. 



One small distome was obtained from the intestine of this species July 24, 1900. A sketch 

 was made of it while it was living. Unfortunately the specimen was lost and no further details of its 

 anatomy than are shown in the sketch can be given. [PI. .\.\.\i. tig. 3.50.] 



Apeltes quadracus, Fonr-t^p'med StickltlKtik. 

 POOD. 



In the suumier of 1900 I examined a small number of this and also of the nine-spined and 

 two-si)ined sticklel)ack. Most of tliem had been in the aquarium some time and the alimentary tracts 

 were empty. Foiir taken at Wareham, Aug. 2, had their intestines tilleil with copepods. 



Siphostoma fuscuni, I'Ipc-JixJi. 



FOOD. 



Small crustaceans fovnid in aliuientary canal of ]iipe-fish taken at Wareham, August 2, 1900. 



CESTODES. 



1. Rhyiichoholhrium hderostphie Linton. 



A few cysts from a specimen taken in Katama Bay, August 28, 1900, resemlile the forms figured in 

 4, pi. L.xiv, fig. 3. The larvae when liVierated were foun<l to agree with this species in the character 

 of hooks. 



Menidia notata, Sihrrfiidi'. 



August 28, 1899; 26; small crustacea and vegetable material. August 30, 1899; 23; annelids and 

 shrimp. July 17, 1900; 50; set^e, spines, and jaws of annelids (Nereis), a few small (young) univalve 

 moUusks, and small crustaceans. July 27, 1900; 6. Enormous numliers of small (young) univalve 

 mollusks (0.3 mm. and less in length), diatoms, and sand; small copepod j)arasites on gills, very 

 n\nnerous. 



NEMATODES. 



1. Iiiimiiliiif neiiirilode.i. Aug. 30, 1899; 2. July 17 and 27, IIIDO; 1 and fragment. 



CESTODES. 



2. I\hi/tirh(ihol)irimn. Larvie encysted on viscera, .\ug. 30, 1899. 



