MANUAL 



OF 



TT r\ T r\ n \T 



H L G Y; 



STRUCTURAL AND SYSTEMATIC, 



WITH ILLUSTl^AW^NS ^F THE SPECIES. 



BY GEORGE W/TRYON, JR. 



CONSF.RVATOU OF TIIK ( '( >N( IIoLOMCA L SKI TIuN T OF Til 1C ACAUJCMY OF NATURAL Si'IKXCKS 

 OF I'HII A 'iF.U'lllA. 



Vol.. \\ II. 



NATICTD^E, CALYITIlyEIDyE, TURIUTKLLrD.E, VERlMETr.r)yE ; 



(^E( 1 I1LE, EULIMIIXE, Tl'lMU )N I LLI I >.E, 



PYRAMIDELLIDJE. 



PHILADELPHIA: 

 Publislied by tlio Autlior, 



ACADEMY OF NATURAL SCIENCES, CCR. IOTH & RACE STS. 



1886. 



