79 
RTLA 620c Yellow bullhead, Ictalurus natalis 
Material: One gross specimen 
Diagnosis: Melanoma 
Submitter: J. A„ Couch 
RTLA 621. Yellow bullhead, Ictalurus natalis 
Material: One gross specimen 
Diagnosis: Melanoma 
Submitter: J. A„ Couch 
RTLA 622. Rainbow trout, Salmo gairdneri 
Material: Branchial arch with enlarged thyroid; two microscope slides 
Diagnosis: Follicular adenocarcinoma of the thyroid 
Submitter: E. Mateo and M. Landolt 
RTLA 623A. & B. 
Material: 
Diagnosis : 
Submitter: 
Northern pike, Esox lucius 
One gross specimen with two ulcerative lesions along the 
dorsal surface 
Probable lymphosarcoma -- tissue too autolyzed for 
confirmation 
E. R 0 Brown 
RTLA 624. Walleye, Stizostedion vitreum vitreum 
Material: One gross specimen with multiple nodular growths 
Diagnosis: Lymphocystis 
Submitter: E. R. Brown 
RTLA 625. Walleye, Stizostedion vitreum vitreum 
Material: One gross specimen with soft blister-like growths in the 
webbing of the caudal fin 
Diagnosis: Lymphocystis 
Submitter: E. R. Brown 
RTLA 626. Walleye, Stizostedion vitreum vitreum 
Material: One gross specimen with a mid-lateral protrusion on the 
right side just posterior to the operculum 
Diagnosis: Probable neurilemmoma -- tissue too autolyzed for 
confirmation 
Submitter: E. R. Brown 
RTLA 627. Walleye, Stizostedion vitreum vitreum 
Material: One gross specimen with soft blister-like growths in the 
webbing of all the fins 
Diagnosis: Lymphocystis 
Submitter: E. R. Brown 
RTLA 628. Ghost 
Material: 
Diagnosis: 
Submitter: 
Reprint: 
shrimp, Callianassa affinis 
Three microscope slides 
Digestive gland and integument lesions associated with 
malnutrition 
A. Co Smith 
Smith, Albert C. and Tonald L. Taylor. Digestive Gland 
and Integument Lesions Associated with Malnutrition in a 
Ghost Shrimp, Callianassa affinis . J. Invertebr. Pathol., 
12(1): 1-6. 1968. 
