70 
RTLA 539. Firebellied newt, Cynops pyrrhogaster 
Material: One gross specimen 
Diagnosis: Epidermal papilloma 
Submitter: W. R. Duryee 
RTLA 540. Firebellied newt, Cynops pyrrhogaster 
Material: One gross specimen 
Diagnosis: Papilloma 
Submitter: W„ R. Duryee 
RTLA 541. Chlamys (Lyropecten) madisonius (fossil specimen) 
Material: Gross specimen -- left valve only -- formation anterior 
to the muscle scar 
Diagnosis: Blister between two layers of foliated calcite with a 
hole, presumably drilled by a parasite, to the surface 
Submitter: M. O'Keefe 
RTLA 542. Panope americana (fossil specimen) 
Material: Gross specimen -- left valve only -- formation underneath 
the umbo 
Diagnosis: Reactive deposition of presumptive conchiolin 
Submitter: M. O'Keefe 
RTLA 543. Panope americana (fossil specimen) 
Material: Gross specimen -- right valve only -- formation anterior 
and below the pallial sinus 
Diagnosis: Reactive deposition of presumptive conchiolin 
Submitter: M. O'Keefe 
RTLA 544. Panope americana (fossil specimen) 
Material: Gross specimen -- left valve only -- formation just 
posterior to the anterior muscle scar 
Diagnosis: Reactive deposition of presumptive conchiolin 
Submitter: M. O'Keefe 
RTLA 545. Panope americana (fossil specimen) 
Material: Gross specimen -- left valve only -- formation centrally 
located just beneath the pallial line 
Diagnosis: Reactive deposition of presumptive conchiolin 
Submitter: M. O'Keefe 
RTLA 546. Largetooth sawfish, Pristis perotteti 
Material: Two microscope slides 
Diagnosis: Wound repair 
Submitter: T. B. Thorson 
RTLA 547. Bull shark, Carcharhinus leucas 
Material: Two microscope slides 
Diagnosis: Wound repair 
Submitter: T. B. Thorson 
RTLA 548. South American gartersnake, Liophis sp. 
Material: One piece of tissue; one color transparency 
Diagnosis: Muscle degeneration due to mechanical injury 
Submitter: J. A. Peters 
