- 10 - 
RTLA 1649. Trevally (jack), Caranx lutescens 
Material: Two paraffin blocks 
Habitat: Kaipara Harbour, New Zealand 
Diagnosis: Melanocytic neurilemmoma (blue nevus) 
Submitter: B. J. Stevenson 
RTLA 1650. Rainbow trout, Salmo gairdneri 
Material: Two paraffin blocks from soft fluctuant lesion on dorsum 
Diagnosis: Cavernous hemangioma 
Submitter: B. J. Stevenson 
RTLA 1651. Brown trout, Salmo trutta 
Material: Three microscope slides of white visceral growths 
Habitat: Four miles from mouth of Grey River, New Zealand 
Diagnosis: Leiomyoma 
Submitter: B. J. Stevenson 
RTLA 1652. Channel catfish, Ictalurus punctatus 
Material: Two microscope slides of lesion in spleen 
Diagnosis: Infectious granuloma 
Submitter: A. L. Scott 
RTLA 1653-1657. 
Material: 
Diagnosis: 
Submitter: 
Fathead minnow, Pimephales promelas 
Gross specimen in 2 pieces: portion of head and re¬ 
mainder of animal (RTLA 1653); 2 gross specimens 
(RTLA 1654 and 1655); 1 microscope slide and 1 paraffin 
block (RTLA 1656); 9 microscope slides (RTLA 1657) 
Induced lipoma 
C. E. Smith 
RTLA 1658. Fish 
Material: A portion of body wall with eroded musculature 
Diagnosis: Neural fibrosarcoma 
Submitter: Unknown 
RTLA 1659. Spot, Leiostomus xanthurus 
Material: Gross specimen with 2 growths in abdominal region 
Habitat: Bolivar Peninsula in Galveston Bay, Texas 
Diagnosis: Microsporidan infection 
Submitter: R. R. Stickney 
RTLA 1660. Atlantic salmon, Salmo salar 
Material: Three gross specimens; 2 microscope slides; 9 black 
and white photographs; 18 color transparencies 
Habitat: A sea loch on West coast of Scotland 
Diagnosis: Leiomyosarcoma of the swim bladder 
Submitter: I. McKnight and K. G. R. Elson 
Reprint: McKnight, Ian J. Sarcoma of the Swim Bladder of Atlantic 
Salmon ( Salmo salar L.). Aquaculture, 13: 55-60. 1978. 
Duncan, I. B. Evidence for an Oncovirus in Swimbladder 
Fibrosarcoma of Atlantic Salmon Salmo salar L. J. Fish 
Dis., 1: 127-131. 1978. 
