550 



clitelhini on XXIV or XXV-XXXI or >^ XXX 11. hut has indistinct 

 tuhcrcnla piihcrtatis, very little glandular tissue about the spermiducal 

 pores, and, what is perhaps more important, has the septa of VI-XV 

 all thin, while in li. loiigiciuctus these septa are strongly thickened. 

 Finally, in the latter species the "hearts" of XI are much smaller than 

 those anterior to that somite, while in H. heddardi (Mich.) the 

 "hearts" of XI are similar in size to the others. Michaelsen ('lo: 

 64) reports a specimen from Tibet, in which the clitellum is on XXIII- 

 XXXII and which he considers to be H. heddardi (Mich.), but not 

 enough characters are given to permit a decision concerning the rela- 

 tionship of this specimen to H. longicinctus. 



H. (B.) parvus (Eisen) has the clitellum quite uniformly on 

 XXIV-XXX in specimens from North America. The tubercula 

 pubertatis are indistinct and variable, and on XXV or XXVI-XXIX 

 or XXX. Michaelsen ('09: 2^S) refers to a specimen from Kashmir, 

 in which the clitellum is on XXV-XXX and the tubercula pubertatis 

 on XXVI-XXIX. In another paper ('10: 64) he mentions two spec- 

 imens from China in which the clitellum is on XXIII-XXX, and also 

 expresses a doubt as to the actual specific distinctness of H. (B.) 

 parvus from H. heddardi (Mich.). Whatever the final decision con- 

 cerning the relations of these two species may be, it can not, in the 

 opinion of the writers, invalidate the distinctness of H. longicinctus 

 in view of the differences mentioned above. 



LITERATURE CITED 



Michaelsen, W. 



'09. The OUgoclKeta of India, Nepal, Ceylon, Burma and the 



Andaman Islands. Mem. Ind. Mus., Calcutta, i:i — ii+103- 



253. 2 pi. 

 '10. Zur Kenntnis der Lumbriciden und ihrer Verbreitung. Ann. 



Mus. Zool. Acad. Imp. Sci. St. Petersb., 15: 1-74. 



