28 
RTLA 153. Pacific oyster, Crassostrea gigas 
Material: 
Diagnosis: 
Submitter: 
Reprint: 
Two slides 
Mesenchymal tumor 
A. K. Sparks 
Sparks, Albert K., Gilbert B. Pauley, Richard R. Bates, 
and Clyde S. Sayce. A Mesenchymal Tumor in a Pacific 
Oyster, Crassostrea gigas (Thunberg). J. Insect Pathol., 
6(4): 448-452. 1964. 
RTLA 154. Pacific oyster, Crassostrea gigas 
Material: 
Diagnosis: 
Submitter: 
Reprint: 
Two slides 
Fecal impaction; possibly due to congenital stenosis 
A. K. Sparks 
Sparks, Albert K., Gilbert B» Pauley, Richard R. Bates, 
and Clyde S. Sayce. A Tumorlike Fecal Impaction in a 
Pacific Oyster, Crassostrea gigas (Thunberg). J. Insect 
Pathol., 6(4): 453-456. 1964. 
RTLA 155. Littleneck clam, Venerupis staminea 
Material: 
Diagnosis: 
Submitter: 
Reprint: 
One slide 
Infestation with larval cestode, Echeneibothrium sp. 
A. K 0 Sparks 
Sparks, Albert K„ and Kenneth K. Chew. Gross Infestation 
of the Littleneck Clam, Venerupis staminea, with a 
Larval Cestode (Echeneibothrium sp.). J. Invertebr. 
Pathol., 8(3): 413-416. 1966. 
RTLA 156. Smallmouth bass, Micropterus dolomieui 
Material: One excised tumor; 4 slides; 4 photographs 
Diagnosis: Fibrovascular tumor; lymphangioma (?); mesothelioma (?) 
Submitter: W 0 Go Yoder 
RTLA 157. Pacific cod, Gadus macrocephalus 
Material: 
Diagnosis: 
Gross specimens; 21 slides; 7 photographs 
Adenoma of parabranchial body -- tentative diagnosis 
based on poorly fixed tissue 
Submitter: 
Co D. Levings 
RTLA 158. Earthworm, Lumbricus terrestris 
Material: Fourteen slides 
Diagnosis: 
Submitter: 
Reprint: 
Epithelioma-like lesion following cold injury 
H„ I. Firminger 
Firminger, H. I., Sandra Antoine, and Elijah Adams. 
Epithelioma-Like Lesion in Lumbricus terrestris 
After Cold Injury. Natl. Cancer Inst. Monogr. 31: 
645-653 o 1969. 
RTLA 159. Planarian, Dugesia dorotocephala 
Material: 
Diagnosis: 
Seven slides 
"Curly-tail disease" -- intranuclear inclusion bodies 
in some neoblasts are suspected as being viruses 
Submitter: 
Reprint: 
Co J. Dawe 
Dawe, Clyde J. Invertebrate Animals in Cancer Research. 
GANN Monogr. 5.: 45-55. 1968. 
