-18- 
RTLA 1738 (contd.) 
Material: Six microscope slides; 2 photomicrographs 
Diagnosis: Epidermal papilloma 
Submitter; J. Pal 
RTLA 1739. Siren lacertina 
Material; One of two growths removed from the right side of 
the animal 
Diagnosis: Granulomas due to a bacterium 
Submitter; K. Martin 
RTLA 1740. Tiger salamander, Ambystoma tigrinum 
Material: Two microscope slides; 1 paraffin block 
Diagnosis: Transplanted melanophoroma 
Submitter: F. L. Rose 
RTLA 1741. Mussel, Mytilus californianus 
Material: Two paraffin blocks 
Habitat: Bodega, California 
Diagnosis; Cytoplasmic inclusions in digestive diverticula and 
in gut goblet cells 
Submitter; P. P. Yevich and C. A. Barszcz 
RTLA 1742. Mussel, Mytilus edulis 
Material; Two paraffin blocks 
Diagnosis: Cytoplasmic inclusions in both the plicate membrane 
and the gills 
Submitter: P. P. Yevich and C. A. Barszcz 
RTLA 1743. Mussel, Mytilus edulis 
Material: One microscope slide; 1 paraffin block 
Diagnosis: Cytoplasmic inclusions in gills and plicate membrane; 
trematode, Bucephalus , in connective tissue 
Submitter: P. P. Yevich and C. A. Barszcz 
RTLA 1744. Soft-shell clam, Mya arenaria 
Material: One microscope slide 
Diagnosis: Kidney hyperplasia associated with foci of necrotic 
hemocytes 
Submitter: P. P. Yevich and C. A. Barszcz 
Reprint: Barry, M. M., P. P. Yevich, and N. H. Thayer. Atypical 
Hyperplasia in the Soft-Shell Clam Mya arenaria . J. 
Invertebr. Pathol., 17: 17-27. 1971. 
RTLA 1745. Soft-shell clam, Mya arenaria 
Material: Two microscope slides 
Diagnosis: Kidney hyperplasia associated with foci of necrotic 
hemocytes 
Submitter: P. P. Yevich and C. A. Barszcz 
Reprint: (See RTLA 1744) 
RTLA 1746. Mussel, Mytilus edulis 
Material: One microscope slide 
