-5- 
Anderson, R.S., Jordan, L.A., and Harshbarger, J.C. Tunic Abnormalities 
of the Urochordate Halocynthia pyriformis (Rathke). J. Invertebr. 
Pathol., 160-168. 1977. 
Harshbarger, J.C. "Spontaneous Neoplasms in Amphibians" and "Spontaneous 
Neoplasms in Reptiles," two Sections of Chapter 1: "Tumors," In: 
Pathology of Laboratory Animals, Vol. 2 , K. Benirschke, F.M. Garner, 
T.C. Jones, and C. Kozma (ed.), (Springer-Verlag, New York; in press). 
Harshbarger, J.C., Otto, S.V., and Chang, S.C. Proliferative Disorders in 
Crassostrea virginica and Mya arenaria from the Chesapeake Bay and 
Intranuclear Virus-Like Inclusions in Mya arenaria with Germinomas from 
a Maine Oil Spill Site. Haliotis (in press). 
Otto, S.V., Harshbarger, J.C., and Chang, S.C. Status of Selected Unicel¬ 
lular Eucaryote Pathogens, and Prevalence and Histopathology of Inclu¬ 
sions Containing Obligate Procaryote Parasites, in Commercial Bivalve 
Mollusks from Maryland Estuaries. Haliotis (in press). 
SELECTED OTHER ACTIVITIES IN 1977 
1. Attended the Fish Health Workshop on 26 and 27 May 1977 at Easton, 
Maryland. 
2. Attended the Xth Annual Meeting of the Society for Invertebrate 
Pathology on 22-26 August 1977 in East Lansing, Michigan. 
3. Presented two papers: (1) "Status of Selected Unicellular Eucaryote 
Pathogens, and Prevalence and Histopathology of Inclusions Contain¬ 
ing Obligate Procaryote Parasites, in Commercial Bivalve Mollusks 
from Maryland Estuaries" (Otto, S.V., Harshbarger, J.C., and Chang, 
S.C.) and (2) "Proliferative Disorders in Crassostrea virginica 
and Mya arenaria from the Chesapeake Bay and Intranuclear Virus-Like 
Inclusions in Mya arenaria with Germinomas from a Maine Oil Spill 
Site" (Harshbarger, J.C., Otto, S.V., and Chang, S.C.) at the Colloque 
International de Pathologic et Parasitologic des Mollusques on 9-12 
September 1977 in Perpignan, France. 
4. Visited and consulted with personnel of the Fish Diseases Laboratory, 
Weymouth, England, on 14 and 15 September 1977, regarding neoplasia 
in fin fish and shellfish. 
5. Presented the paper, "Feral Populations in Monitoring Environmental 
Pollution. Part II - Aquatic," at the 105th Annual Meeting of the 
American Public Health Association, on 30 October - 3 November 1977, 
in Washington, D.C. 
Participated in cooperative investigations of the ultrastructural 
pathology of: (a) neoplasms in bivalves; (b) procaryotic organisms 
in bivalves; and, (c) neoplasms in axolotls. {(a) and (b) were sup¬ 
ported in part by the U.S. Food and Drug Administration.} 
6 . 
