58 standley: blepharidtum 



8. Chloromethyl-chloroformate (Palite), CICOOCH2CI (shell). 



9. Nitro-trichloro-methane (Chloropicrin or nitrochloroform), 

 CCI3NO2 (shell). 



10. Chlorosulfonic acid, SO3.H.CI (hand grenades and ''smoke 



pots"). 



11. Dichloro-diethylsulfide (mustard gas), (CH2C1CH2)2S 



(shell). 



12. Dhnethyl sulfate, (0113)2804 (hand grenades). 



13. Diphenyl-chloro-arsine, (C6H5)2AsCl (shell). 



14. Dichloromethyl ether, (CH2C1)20 (shell). 



15. Methyl-chlorosulfonate, CH3CISO3 (hand grenades). 



16. Phenyl-carbylamine chloride, C6H5NCCI2 (shell). 



17. Phosgene (carbonyl chloride), COCI2 (cloud and shell). 



18. Sulfur trioxide, SO3 (hand grenades and shell). 



19. Trichloromethyl-chloroformate (Diphosgene, superpalite) , 

 CICOOCCI3 (shell). 



20. Xylyl bromide (tolyl bromide), CH,C6H4CH2Br. (shell). 



BOTANY. — Blepharidnmi, a new genus of Rubiaceae from 

 Guatemala.^ Paul C. Standley, U. S. National Museum. 

 In the U. S. National Herbarium there are specimens of a 

 striking rubiaceous plant, hitherto undescribed, collected in 

 Guatemala by Mr. Henry Pittier. Some years ago this material 

 was examined by Captain John Donnell Smith, who concluded 

 that it probably represents an imdescribed genus. Recently, 

 while preparing an account of the Rubiaceae for the North 

 American Flora, the writer has studied the material and has 

 arrived at the same conclusion. Among North American 

 representatives of the family the plant is noteworthy because of 

 its large, long-petiolate leaves and of its large flowers, borne in 

 peculiar 3-flowered cymes. Its general appearance does not 

 definitely associate it with any of the known genera, and its 

 floral details are such as to necessitate its recognition as a new 

 genus, for which the name Blepharidiiim is here proposed. 



'Published by permission of the Secretary of the Smithsonian Institution. 



