10 



The Canadian Field-Naturalist 



[Vol. XXXVl 



This species has iiot previously been reported 

 from Canada. It was not found by Miss Ryerson 

 nor was it included in Professor Reighard's Lake 

 Erie collections. It is, however, well known in the 

 northern border states. 



ICHTHYOBDELLIDAE 



Piscicola punctata (Verriil) 

 "Elmsdale, Nova Scotia, June 5, May 23-28, 

 1921, dredged on mud bottom in from four to six 

 feet. A. H. Leim." 



These differ from the European P. geometra in 

 the absence of eye spots from the caudal sucker 

 and the very slight development of two annuli of 

 complete somites so that only twelve instead of 

 fourteen rings are obvious. 



HIRUDINIDAE 



Macrobdella decora (Say) 



"Elmsdale, Nova Scotia, August 11, 1919; 

 Enfield, Nova Scotia, July 12 and 15, 1920, 1 foot. 

 A. H. Leim." Typical examples. 



"Pembroke Lake, Grand Etang, Cape Breton 

 Island, September 2, 1917. F. Johansen." A 

 young individual 21 mm. long. The four groups 

 of copulatory gland pores are plainly visible. 

 With one H. marmoraiis and nephelid egg cases. 



"Burbidge, Quebec, July 23, 1918. C. L. 

 Patch." Two specimens, one mature, the other 

 not. 



"Island Lake, Algonquin Park, Ontario, July 

 17, 1900. W. Spreadborough." Four mature 

 specimens differing much in the amount of ventral 

 blotching. One has only three groups of copula- 

 tory glands, the left posterior being absent. 

 With one Haemopis marmoratis. 



"On Dore, Qu'Appelle Valley, Saskatchewan, 

 summer, 1907. A .Halkett." Four mature speci- 

 mens with weil-developed copulatory glands and 

 clitella and with penes protruded. Two are plain, 

 two spotted ventrally. 



Another example 66 mm. long is in an unlabelled 

 bottle with one Erpobdella punctata. 



"A.N.S. No. 253, Lac Aux Sables, Quebec, 1894. 

 Dr. W. E. Hughes." 



Haemopis marmoratis (Say) 

 "In a freshwater pond, Amherst, Magdalen 

 Islands, Quebec, middle of June, 1917. Philip 

 Cox." One of a nearly uniform slate color. 



"Elmsdale, Nova Scotia, May 22, June 1 and 

 July 2, 1921. A. H. Leim." 



"Neil Harbor, Cape Breton Island, July 29, 

 1917. Philip Cox." One 28 x 7 mm. Brown 

 above with widely scattered small dark-brown 

 spots; paler below with only three or four small 

 spots. The left paired jaw bears eleven pairs of 

 teeth. 



"Pembroke Lake, Grand Etang, Cape Breton 

 Island, September 2, 1917. F. Johansen." One 

 sparsely spotted, medium-sized specimen with a 

 young M. decora and nephelid egg cases. 



"Mount Herbert, Prince Edward Island, Sep- 

 tember 3, 1919. J. Robert Mutch." A letter 

 from the collector accompanying these sepcimens 

 states that they were -found in a swamp and are 

 very common. Two measure 80 x 12 and 52 x 7 

 mm. respectively. The larger with well-marked 

 clitellum covering fifteen small annuli and ex- 

 truded filiform penis; the smaller without indi- 

 cations of sexual maturity. Both are very dark 

 — nearly uniform slaty-black above with very 

 distinct white sensillse, brownish-gray below 

 heavily mottled with black. 



"Pond at Cheticamp, Cape Breton Island, July 

 1, 1917. F. Johansen." One. 



"Pond on fields at Moose Factory, Ontario", 

 July 14-15, 1920. F. Johansen." Three speci- 

 mens, one of large size, two thickly, one sparingly 

 blotched. 



"Missinaibi River, Ontario (between Mattice 

 and Opazatika River), June 24, 1920. F. Johan- 

 sen." Two small specimens. 



"Abitibi River, Ontario (between New Post and 

 Moose River), middle of October, 1920. F. 

 Johansen." One small specimen. 



"Government River Post, Albany River (at 

 lat. 51 30 N.), August 16, 1920. M. Y. Wil- 

 liams." One specimen. 



"Brook near Ottawa, Ontario, June 30, 1918. 

 F. Johansen." A young specimen 11 mm. long 

 with the clitellum already developed. The 

 female genital orifice is one annulus further for- 

 ward than usual, being therefore removed from 

 the male orifice by only four annuli. 



"Pickwick Lake, north of Thurso, Quebec, 

 June, 1903. A. Halkett." One thickly and 

 finely mottled with black. 



"Long Lake, north of Lake Superior, Ontario, 

 August, 1916. F. W. Waugh." One heavily 

 blotched. 



"St. Joseph Island, Sault Ste. Marie, Ontario, 

 September 3, 1918. F. Johansen." One of a 

 dark slate color above, paling at the margins into 

 the bluish-white of the venter. Dorsally are a 

 few very conspicuous scattered irregular pale spots. 



"Island Lake, Algonquin Park, Ontario, July 

 17, 1900. W. Spreadborough." One. 



"Probably from lakes in Alberta and Saskat- 

 chewan, 1894. John Macoun." A fine specimen, 

 notable for the almost complete loss of the usual 

 secondary dividing furrows on the enlarged annuli 

 vii a 3 and vii a 1. With one H. grandis. 



"On Dore, Qu'Appelle Valley, Saskatchewan, 

 summer, 1907. A. Halkett." One. 



