36 
RTLA 223o Sydney rock oyster, Crassostrea commercialis 
Material: Two photographs; 6 slides 
Diagnosis: Papilloma of mantle 
Submitter: P„ H. Wolf 
Reprint: Wolf, Peter H„ Unusually Large Tumor in a Sydney Rock 
Oyster„ J. Natl„ Cancer Inst., 46(5): 1079-1084. 1971. 
RTLA 224. American oyster, Crassostrea virginica 
Material: Thirteen slides 
Diagnosis: Hematopoietic neoplasms 
Submitter: C. A. Farley 
Reprint: Farley, C. Austin. Probable Neoplastic Disease of the 
Hematopoietic System in Oysters, Crassostrea virginica 
and Crassostrea gigas . Natl. Cancer Inst. Monogr. 31 : 
541-555. 1969. 
RTLA 225. Pacific oyster, Crassostrea gigas 
Material: Three slides 
Diagnosis: Hematopoietic neoplasms 
Submitter: C. A. Farley 
Reprint: [see RTLA 224] 
RTLA 226. Broad-banded copperhead, Agkistrodon contortrix laticinctus 
Material: One piece of lung tissue; 3 photographs 
Diagnosis: Excessive mucus and sloughing in bronchus with gram 
positive bacterial infection; satisfactory cause of 
death not determined 
Submitter: W. E. Haast 
RTLA 227. Odonata (dragonfly) naiads 
Material: Four specimens 
Diagnosis: Subcutaneous lithiasis; etiology unknown 
Submitter: H„ R. Hepburn 
RTLA 228. Atlantic eel, Anguilla vulgaris 
Material: Gross specimens; 10 slides; photographs 
Diagnosis: Epithelial papillomas 
Submitter: B. F. Deys 
Reprint: Deys, B. F. Papillomas in the Atlantic Eel, Anguilla 
vulgaris . Natl. Cancer Inst. Monogr. 31 : 187-193. 1969, 
RTLA 229. Drosophila melanogaster 
Material: A live strain 
Diagnosis: tuB-, 
Submitter: C. Barigozzi 
Reprint: Barigozzi, C. Genetic Control of Melanotic Tumors in 
Drosophila . Natl. Cancer Inst. Monogr. 31^: 277-290. 1969, 
RTLA 230. Blacktail platy, Xiphophorus sp., probably a hybrid between 
X. maculatus and X. helleri 
Material: Twenty gross specimens; photographs 
Diagnosis: Melanoma with invasion of underlying muscle 
Submitter: I. L. Gorman 
