-3- 
goldfish (RTLA 2052 and B.TLA 2141; R. Pickering, ^ and S. 
Radhakrishnan) and Dover sole (RTLA 2168; R. Warner). They also 
included an amelanotic melanophoroma (some considered it a giant 
cell epulis) in a boa constrictor (RTLA 2070; A. Heldstab) and an 
iridophoroma with beautiful reflecting platelets in a pine snake 
(RTLA 2130; E. Jacobson). 
Spontaneous hepatocarcinoma in a cicblid fish (RTLA 2111; 
Prince Masahito) and a bream (RTLA 2155; W. Slooff) and nephro¬ 
blastoma in two rainbow trout (RTLA 2154 and RTLA 2210; C. E. 
Smith) were all isolated cases. There were no new epizootics to 
indicate the possibility of environmental chemical carcinogens. 
Connective tissue neoplasms included lipoma/fibrolipoma in 
Chinook salmon (RTIA 2098; K. Neiland), red-tail catfish (RTLA 
2112; Prince Masahito), Dover sole and lingcod (RTLA 2170-RTLA 
2173; R. Warner) and rockfish (RTLA 2177, RTLA 2178; R. Warner); 
fibroma/fibrosarcoma in an eel (RTLA 2055; R. Mason), a rainbow 
trout (RTLA 2062; N. Boustead), a basilisk (RTLA 2069; A. Heldstab), 
a black bullhead (RTLA 2078; J. Goudzwaard), a denticle herring 
and Malayan monitor (RTLA 2113, RTLA 2114: Prince Masahito), and a 
black cod and an English sole (RTLA 2179 and RTLA 2181; R. Warner); 
and myxoma and myxofibroma in an iguana (RTLA 2073; F. L. Frye) 
and a shortspine thornyhead (RTLA 2175; R. Warner). 
A mesothelioma occurred in a coho salmon (RTLA 2043; A. Hauck) 
and a gill hamartoma in a brown trout (RTLA 2213; R. Moccia). 
Epidermal tumors included fibropapilloma in a green sea turtle 
(RTLA 2097; G. Balazs), squamous polyp in a goby (RTLA 2107; Prince 
Masahito) and epidermal papilloma in spotted gar (RTLA 2115; Prince 
Masahito), three-spot gourami (RTLA 2143; S. Radhakrishnan), pink 
salmon (RTLA 2215; T. Awakura), and rock oyster (ETLA 2157, RTLA 
2183-RTLA 2187; P. Wolf). 
Germinoma were seen both in hard clams (RTLA 2085-RTLA 2090, 
RTLA 2137-RTLA 2139; H. Diamond) and soft clams (RTLA 2091; J. 
Harshbarger, ^ aJ^.) . Electron microscopy of nuclear inclusions in 
hard clams were negative for viral particles. 
Hematopoietic neoplasms included a thymic lymphoma in a rainbow 
trout (RTLA 2129; C. E. Smith), a plasmacytoma in a channel catfish 
(RTLA 2166; J. Grizzle) which is possibly the first neoplasm seen 
in this catfish and a hyaline hemocyte neoplasm in an American oyster 
(RTLA 2132; J. Couch). While no hematopoietic neoplasms were con¬ 
tributed in soft clams, it is of interest that P. Chang has, in 
collaboration, followed up on successful transmission studies done 
by R. Brown and isolated a retrovirus which transmits the disease. 
I understand that a paper is in press in the "Journal of Invertebrate 
Pathology". 
Among miscellaneous neoplasms were a shortspine thornyhead 
compound odontoma (RTLA 2176; R. Warner), a blue acara (RTLA 2140; 
