414 PROCEEDINGS OF THE NATIONAL MUSEUM vol.85 



DRAWIDA SIEMSSENI Michaelsen 



1910. Dravnda japonicus f. siemsseni Michaelsen, Mitt. Naturhist. Mus. Ham- 

 burg, vol. 27, p. 50 (type locality: Foochow; type in the Hamburg 

 Museum). 



1931. Draicida japonicus f. siemsseni Michaelsen, Lingnan Sci. Journ., vol. 8, 

 p. 157; Peking Nat. Hist. Bull., vol. 5, pt. 3, pp. 1, 7; Zool. Jahrb. (Abt. 

 Syst.), vol. 61, p. 525. 



Material examined. — From the Hamburg Museum: 1 specimen 

 labeled "V 6333. Drawida japonicus Mich. f. sieinsseni. Tiensin, 

 Futschau." 



External cJiaractervitics. — The genital markings and the male poro- 

 phores are different from those of D. japonica. The clitellar glandu- 

 larity appears to be only partially developed. 



Remarks. — Forma siemsseni was erected on a single specimen that 

 was distinguished from f. typica by the greater length, greater thick- 

 ness, greater number of segments (said to be "sehr ungenau") and 

 "ungefahr" 6 gizzards. The internal organs were removed in course 

 of the original dissection and have been lost. 



The "type" of f . siem^sseni quite clearly is specifically distinct from 

 D. japonica, but the species cannot be adequately characterized in 

 the absence of the mternal organs. 



Genus PHERETIMA Kinberg 



Within the genus Pheretima the prostomium, secondary annulation, 

 gizzard, ovaries, oviducal funnels, and female pores do not provide 

 characteristics that are of taxonomic importance. Reference to these 

 has accordingly been omitted in succeeding pages. In each of the 

 bpecies described hereinafter, in absence of definite indication to the 

 contrary, a gizzard is present in segment viii or in a region between 

 septum 7/8 and either 9/10 or 10/11, while ovaries and oviducal fun- 

 nels are present in segment xiii with a single female pore on xiv. 

 As a rule, reference to color or pigmentation has been omitted, since 

 many of the specimens have been bleached. 



No reference has been made in the specific descriptions to the paired 

 tufts of enteronephric pharyngeal nephridia at the sides of the gut in 

 segments iv-vi. These nephridia apparently are always present and 

 have been noted definitely in all the Chinese species examined except 

 P. choeina. Absence of mention, in the laboratory notes, of these ne- 

 phridia is probably merely an oversight. "Blood glands" in v or v 

 and vi have been noted in the following species only : P. an tejixa^ cali- 

 fomica, fornicata, pectenifera^ P^'^ffh schmardae, sseckiuinensis, tuber- 

 culata., and vulgaris. "Lymph glands" are probably present much 

 more frequently than the occasional references in the specific descrip- 

 tions indicate. 



