-24- 
RTLA 2182. Ribbed newt, Pleurodeles waltlii 
Material: 
Habitat: 
Diagnosis: 
Submitter: 
Six microslides; 5 black and white photographs 
Laboratory reared 
Nephroblastoma 
W. JMnisch 
RTLA 2183-2187. 
Material: 
Habitat: 
Sydney rock oyster, Crassostrea commercialis 
Two microslides each 
Greenwell Point, near Nowra, New South Wales, 
Australia 
Diagnosis: 
Submitter: 
Mantle papillomas 
P. H. Wolf 
RTLA 2188. Roach, Rutilus rutllus 
Material: One paraffin block of enlarged thyroid gland 
Diagnosis: Well-differentiated colloid adenoma 
Submitter: W. Slooff 
RTLA 2189. Angelfish, Pterophyllum scalare 
Material: 
Fish head with a nodular growth on the mouth; tissue 
bits of the growth 
Diagnosis: 
Reactive hyperplasia with tooth formation — probably 
traumatic 
Submitter: 
G. C. Blasiola, Jr. 
RTLA 2190. Chuckwalla, Sauromalus obesus 
Material: 
Lower jaw with spherical growth embedded in the fascia 
between the skin and the throat musculature; reprint 
Diagnosis: 
Submitter: 
Reprint: 
Huge multifocal ulcerated bacterial granuloma 
A. Klempau 
Bostic, D. L. 1971. Observations on the tumor-like 
growths in the chuckwalla, Sauromalus varius. J. 
Herpetol., 5: 76-78. 
RTLA 2191-2193. 
Material: 
Habitat: 
Diagnosis: 
Leopard frog, Rana pipi^ns 
One femur each 
Wisconsin 
Callus formation around a fracture which may be 
calcium deficient 
Submitter: 
A. Klempau 
RTLA 2194. Blue mussel, Mytilus edulis 
Material: 
Habitat: 
One microslide 
Inlet polluted by pulpmill effluent in British 
Columbia, Canada 
Diagnosis: 
Granuloma; hemocyte nodules in the digestive diver¬ 
ticula and connective tissue due to parasitlzation 
by worm 
