158 BULLETIN OF THE BUREAU OF FISHERIES. 



(125a) East Harbor, Sandusky, Ohio, July 28, 1899; a single unuHuiilly lar^e example. 



(127) Shore of South Bass Island, Ohio, September 10, 1898. 



(179a) East Harbor, Ohio, near Lakeside, August 4, 1899; from flaj leaves. 



(192a) East Harbor, Sandusky, Ohio, August 7, 1899; from wild rice. 



(209a) East Harbor, Sandusky, Ohio, August 9, 1899. 



(268a) Erie, Pa., north shore, ..n l.._'s. An-iist 14, 1899. 



(313a) Long Pond, Erie, Pa., .\ulmi-i 1"., ivin. 



(.365a) Long Point, Canada, Au^nist I'l, Is'.ci. 



(380a) Long Point, Canada, August 21, 1.S99; 1 specimen taken from a rock bass. 



'459a) Rondeau Harbor, Ontario, from East Swamp, August 28, 1899. 



Glossiphonia nepheloidea (-Graf). 



This species, which is fully descriVjed by Castle under the name of G. elongata, is represented by 

 ))ut 3 sjjecimens from (67) Put-in Bay, Ohio, August 12, 1898 (under rocks); (266a) Erie, Pa., Grave- 

 yard Swamp, August 14, 1899 (from stmies ami rocks). Two examples from the latter locality are 

 very greatly elongateil. 



Glossiphonia fusca Castle. 



The earliest name given to any of the varieties included under this species is Clepsine papiUifim 

 lineala Verrill, but as the prior Hirudo lineata Midler is almost certainly Glossiphonia complanata, au'l 

 R. Blanchard has shown that the closely related G. triserinlis R Blanchard differs in the position "l 

 the male genital pore, Castle's name becomes the earliest available. G'. /»,*«« is the most variaV)le ni 

 our Glositiptionia', and the extremes are so unlike that were they alone in hand no hesitation would In- 

 felt in arranging them in two or three distinct species, and it is possible that further study may lea 1 

 to the recognition of two. The large number of specimens, amounting to between 200 and 300, belon.;- 

 ing to the present and other collections that have been carefully studied show that the extremes in 

 color pattern, papillation, size of salivary glands and gastric cfeca, length of the stalks of the nephridial 

 funnels, and the degree of development of the ccelomic sinuses are connected by a more or less com 

 plete series of gradations. It has not yet been found possible to fully correlate the occurrence of the^i- 

 and other characters, but three well-marked types or varieties may be distinguished: One, having the 

 nearly uniform ground color and metameric white spots of the typical /(wca as described by Castle, 

 includes most of the smaller nonpapillated individuals; another has a sharply defined longitudinally 

 striated pattern (pi. xxxii, fig. 5) with 1 or 3 rows of small, usually deeply pigmented papillie like thf 

 form figured by Graf under the designation of Clepsine b; some of the smaller and most of the medium 

 sized specimens are of this variety; in the largest examples the body tends to become more elongateil, 

 flatter, and thinner, and most of the brown pigment becomes concentrated in five or seven row^sof exceed- 

 ingly large papillw, many of which are double. The eyes are relatively farthest apart, the first pair <jt 

 gastric ca?ca small or absent, and the coelomic spaces best developed in the small, typical /msco, while tlie 

 opposite extremes in these features are likely to occur in the largest and most strongly papillated form> 

 In all of the three or four examples of each variety sectioned the stalks of the nephridial funnels art- 

 longer in the lineata than in the fasca type, but not noticeably different fron those of the strouijly 

 papillated variety. All three forms are well represented in the collection and are separated, thouL'h 

 perhaps arbitrarily, in the following list: 



TYPIC.\I. FL'SC.\ TYPE, 



(103) Sandusky Bay, Ohio, August 18, 1.S9.S. 



(268a) Erie, Pa., north shore, August, 1899; from logs near shore. 



(269a) Erie Bay, Pennsylvania, August 14, 1899. 



(314a) Boat Harbor, Erie, Pa., August 16, 1899; from C'ratojihyllum. 



(343a) Long Point, Canada, August 18, 1899. 



(457a) Rondeau Harbor, Ontario, August 28, 1899. 



