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RTLA 1928 (contd.) 
Diagnosis: Epidermal hyperplasia associated with epidermal micro¬ 
cysts in the dermis 
Submitter: G. C. Blasiola, Jr. 
RTLA 1929. Koi carp, Cyprinus carpio 
Material: Microslide of lesion located near caudal fin 
Diagnosis: Spindle cell neoplasm of soft tissue; cell type 
undetermined 
Submitter: J. Carney 
RTLA 1930. Platyfish-swordtail backcross hybrid, Platypoecilus 
variatus x Xiphophorus helleri x X. helleri BC, 
Material: Four photographs 
Diagnosis: Neuroblastoma 
Submitter: M. Schwab 
Reprint: Schwab, M., J. Haas, S. Abdo, M. R. Ahuja, G. Kollinger, 
A. Anders, and F. Anders. Genetic Basis of Susceptibility 
for Development of Neoplasms Following Treatment with 
N-Methyl-N-Nitrosourea (MNU) or X-rays in the Platy- 
fish/Swordtail System. Experientia, 34: 780-782. 1978. 
Schwab, M., S. Abdo, M. R. Ahuja, G. Kollinger, A. 
Anders, F. Anders, and K. Frese. Genetics of Sus¬ 
ceptibility in the Platyfish/Swordtail Tumor System 
to Develop Fibrosarcoma and Rhabdomyosarcoma Fol¬ 
lowing Treatment with N-Methyl-N-Nitrosourea (MNU). 
Z. Krebsforsch., 301-315. 1978. 
RTLA 1931. Goldfish, Carassius auratus 
Material: One microslide; 1 paraffin block 
Habitat: Big Bear Lake, San Bemadino County, California 
Diagnosis: Invasive esthesioneuroepithelioma, possibly from vagus 
nerve 
Submitter: H. Wolf 
RTLA 1932. Pitar morrhuana 
Material: One microslide 
Habitat: Quonsett Point in Narragansett Bay, Rhode Island 
Diagnosis: Procaryote cytoplasmic inclusions; unidentified extra¬ 
cellular structureless bodies, possibly mineral 
Submitter: H. Diamond 
RTLA 1933. Pitar morrhuana 
Material: One microslide 
Habitat: Quonsett Point in Narragansett Bay, Rhode Island 
Diagnosis: Chronic inflammation to ova resorption and to bac¬ 
terial infection 
Submitter: H. Diamond 
RTLA 1934. Hard clam, Mercenaria mercenaria 
