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RTLA 1800. Threesplne stickleback, Gasterosteus aculeatus 
Material: Twelve microscope slides 
Habitat: 
Ventura River System, Ventura County, California — 
in the lower few miles of the river 
Diagnosis: 
Submitter: 
Pseudocystic microsporidan granuloma 
M. A. Bell 
RTLA 1801. Threespine stickleback, Gasterosteus aculeatus 
Material: Gross specimen with a pea-shaped growth on right ven- 
Habitat: 
tro-lateral aspect 
Ventura River System, Ventura County, California — 
lower few miles of the river 
Diagnosis: 
Submitter: 
Pseudocystic microsporidan granuloma 
M. A. Bell 
RTLA 1802. Threesplne stickleback, Gasterosteus aculeatus 
Material: Gross specimen with pea-shaped growth on right dorso- 
Habitat: 
lateral aspect 
Ventura River System, Ventura County, California — 
lower few miles of the river 
Diagnosis: 
Submitter: 
Pseudocystic microsporidan granuloma 
M. A. Bell 
RTLA 1803. Threespine stickleback, Gasterosteus aculeatus 
Material: Gross specimen with pea-shaped growth on left mld- 
Habitat: 
lateral aspect 
Ventura River System, Ventura County, California, 
Ojai in San Antonio Creek 
Diagnosis: 
Submitter: 
Pseudocystic microsporidan granuloma 
M. A. Bell 
RTLA 1804. Threesplne stickleback, Gasterosteus aculeatus 
Material: Gross specimen with pea-shaped growth on right ventro- 
Habitat: 
lateral aspect 
Ventura River System, Ventura County, California — 
lower few miles of the river 
Diagnosis: 
Submitter: 
Pseudocystic microsporidan granuloma 
M. A. Bell 
RTLA 1805. Threespine stickleback, Gasterosteus aculeatus 
Material: One x-ray positive of "normal" gross specimens and 
Habitat: 
Diagnosis: 
gross specimens with foreshortened vertebral columns 
Ventura River System, Ventura County, California 
Skeletal anomalies possibly associated with chemical 
pollution 
Submitter: 
M. A. Bell 
RTLA 1806. Emerald shiner, Notropls atherlnoides ; Sand shiner, Notropis 
stramineus ; Bluntnose minnow, Pimephales notatus ; Mimic 
shiner, Notropis volucellus 
Material: 
Two hundred five gross specimens from the above genera 
and species 
