VICTOR E. SHELFORD. 



-urpri-cd that they have tound so main- of the Breams as is 

 indicated la-re. The absence i.f the red-hellied dare is no 

 doubt due ID accident. 



'I'hc Mack-noM-d da<v i- present in all the stream- except 

 C.K-ncoe Brook, Ian lower down than the two just mentioned. 

 It is usually accompanied by the Johnny darter, which is absent 

 from Bull Creek. This absence i- probably due to the same 

 causes as the absence of the red-bellied dace from County Line 

 Creek. The Johnny darter probably had never become estab- 

 lished in County Line Creek; only two specimens have been 

 taken and opportunities to secure a complete collection were good 

 when the pools dried. 



Records of the occurrence of the blunt-nosed and blackhead 

 minnows in County Line Creek are based on a single specimen 

 of each taken by a student from the pool nearest the mouth 

 of the stream. \Ye have taken no others and these were probal >ly 

 not residents. 1 \Ye note that at the points marked 4 (Fig. 4) as 

 shown in column 4, all the fishes occurring nearer the source of 

 the stream are present and in addition the young of the common 

 sucker. 



In Bull Creek at point 5, as shown in column 5, the daces are 

 represented by the horned dace alone ; the other two being absent. 

 The minnows were present here in numbers and evidently regular 

 residents. The little pickerel was not abundant. 



In columns 6 and 7 (see map also), we find the record of a 

 number of fishes belonging to large creeks and to ponds. The 

 distribution of the fishes in Table I. corresponds to the habitat 

 preferences indicated by Forbes and Richardson ('08), pages 

 ci.\ to cxiii. 



2. Discussion of Table II. 



By comparing columns I to 6 in Table I. with column I. of 

 Table II., we note that nearly all the fish present in the north 

 -lion- streams are present at the point nearest the source of 

 Hickory Creek. Considering the first, third and fourth mile- 

 of this stream we note that, the little pickerel and the black- 

 no-ed dace are absent in the preen ision part of Hickory Creek 



1 I lankinson ha- poiiUrd mil tin- difficulties <>!' si-curing a complete colln tion of 

 Ii-li. II, I, in tin- water which In- has difficulty in M-CIM in.u with a dip m-t. 



