ANNULATA DISCOPHORA. 15 



XIX— XX XXII—XXIII M.-Tawl: auf XX— XXI et XXIII—XXIV 

 M-T. <& Malm; md XXV-XXVI et XXVII-XXVIII Dies.; aid XX- 

 XXI et XXVII-XXVIII Dies; aut XX-XXI et XXIV-XXV 



G. JoJuist. — Aqmnon dtdcinnt incolae. 



a) Saccorum ventralium paria vj; caput continuum (Clepsine. M.-T.) 



C. binocidata, Bergm. C. clavatnm, depressum, gelcdinosum, 

 peUueidum, margine crenulatum, sitpra punctis nigris^ exasperatum. 

 Ocelli ij. Segmentum nonurn scepe maeula brunnea I. nigra supra no- 

 tatum. Long. 13 — 20 m. m.; lat 3 — 5 tn. m. 



Sijn. Hirudo 2-oculata, Bergman 1757; 0. F. Miiller i. ii. 41 



Linne S. Nat. xin. 3096; Braun 53; 

 Hirudo stagnalis, Linne S. Nat. X. p. 649; F/Su. n. 506 M 2081 

 ^sec. 0. F. Miiller et A. W. Malm; though Linnaeus himself. 

 S Nat. X p. 649 tells Hir. stagnalis to be = H. bioculata, the 

 description given by him quite as well accords to Planaria torva 

 as to the species now mentioned). 

 Glossiphonia perata, Johnson 26. 



Glossiphonia bioculata, Moquin-Tandon 366: CI. Johnston 52 & 316 

 Olepsine bioculata, Diesmg i. 448; ("xrube 113; Malm 195; Kessler 114. 



Habitat in rivis stagnis paludibusque frequeDtissima. — 

 Abo, ileso, Nadendal, Hel singe, Helsingfors, Inga, Mantsala; 

 Jacobstad (J. Sahlberg); territory around Onega (Kessler). 



Obs. Varying in colour: grayish, greenish or light rosy; 

 after Nephelis octoculata the most common leech in Finland. 



C. heteroelita, Lin. G. gelcdhwfifm, elliptieum, depressum, di- 

 aphanum, supra cinereum, I. flavieaii.i, hderdum maculis nigris medi- 

 anis vj serie longitudinali dispositi.^; margine suhintegrmn. Ocelli vj. 

 bini anteriores valde approximati. Sacri ventrales jjrimi p)aris oblique 

 antrorsmn rergentes. Long. 7 — 8 m. m , lat. 3 — 5 '>n. m. 



Syn. Hirudo heteroelita, Linne F. Su. n. 50G. Jfs 2085. 



Hirudo hyalina, 0. F. Miiller i. ii, 49; Linne S. Nat. xm. 3097. 



Hirudo papillosa, Braun 64. 



Hirndo heteroclyta, Johnson 34. 



Glossiphonia heteroelita, Moquin-Tandon 358; G. Johnston 52 <& 316: 



Glepsine hyalina, Hiesing I. 453. 



Clepsiue heteroclit?,, Grube 113; Malm 199; Kessler 113. 



Habitat in stagnis. — Reso; in Uksh-osero (Kessler). 



C. seiioeulata, Bergm. C. suhcartilaginrum. elliptieum, dep- 

 ressum; supra cinereo-viride, lineis ij—jp longifud/riah'bus nigris, dua- 

 bus distincte granulosis, continuis I. intcrdum punctis albis interruptis; 

 subttcs grisettm.; margine siiberenulatum. Ocelli vj, per paria paralleli. 

 Sacei ventrales prinli par is ut reliqui oblique retrorsum vergenfes. Long. 

 15 — 22 m. m., led. 8 — 10 m. m. 



Syn Hii'udo 6-oculata, Bergman 1757, 213; 



Hirudo complanata, Linne S. Nat. X. 650; F. Su. ii. 506 M 2082; 



0. F. MiiUer i. n. 47; Linne 8. Nat. xill 3097; Braun 68 

 Glossiphonia tuberculata, Johnson 25 (ut etiam : Hii'udo hneata ? 



Johnson 34). 

 < ilossiphonia sexoculata, Moquin-Tandon 353: G. Johnston 51 & 3L5 

 (ut etiam: Glossiph. verrucataV Johnston 51 & 314). 



