U- S. NATIONAL MUSEUM 



PROCEEDINGS, VOL 81. ART. 13 PL. 11 



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46. Opisihotremn diijnnix: After Fischer, 1883. 

 47-49. O. cochleotremn: 47, Original; 48, section tlirougli female genitalia, oiiginal; 4!), .spines from 

 ventral surface, original. 

 50. Piilmonic'ild piihiwimlc: After von Lin.stow, 1904. 



