17 



Table 4. Infraspecific differentiation of Trimeresurus stejnegeri Schmidt, 1925 



According to Table 4, the coefficients of difference of the value V+Sc between populations from 

 Hainan and those from Fujian, Zhejiang, Anhui, Hubei, Guizhou, Guangxi, Yunnan, Sichuan, Jiangsu, Jilin 

 and Taiwan are higher than the value distinguishing subspecies, and the value of AM is much more than 

 three times the value of S.E.d. A new subspecies is created for the Hainan population. 



4.1 Zhuyeqing, typical form Trimeresurus s. stejnegeri Schmidt, 1925 



Diagnosis : Ventral scales in males 154-170, mean 162.6; in females 154-172, mean 162. 



Distribution : Provinces of continental China and Taiwan. 



4.2 Zhuyeqing, Hainan variety Trimeresurus s. chenbihuii ssp. nov. 



Holotvpe : CIB64 III 5599, adult male, collected on June 6th, 1964 at Diaoluoshan, Lingshui County, 

 Hainan Province, elevation about 250 m. 



Cotvpe [12]: CIB64 III 5945, adult female, collected on June 1 1th, 1964, same locality than holotype. 

 Paratvpes : CIB64 III 5906, 5944, 5978-9, 6013, 6043-44, 6069, 6101, 6104, 6107, males; CIB64 III 

 5600, 5735, 6014, females, collected between June 6 and 15th, 1964 at Diaoluoshan, Lingshui County, 

 Hainan Province, elevation 225-290 m. CIB64 III 51 10, 5181, 5261-2, males, collected between April 23rd 

 and May 12th, 1964 at Wuzhishan, Qiongzhong County, Hainan Province, elevation 500 m. 

 Types are deposited in the Chengdu Institute of Biology (CIB). 



Diagnosis : Ventral scales in males 169-178, mean 172.6; in females 168-174, mean 172 I'^l. 



Distribution : Hainan Island. 



Etymology : The new subspecies is named in honour to Prof CHEN Bi Hui, who dedicated his researches to 

 the endangered Yangze alligator. 



