CRAYFISHES. 375 



National Museum there is a female crayfish (No. 22,518) collected by D. S. 

 Jordan in northern Wisconsin which looks like this species, but the locality is 

 an extraordinary one for this species and should not be accepted as authentic 

 until confirmed by securing more material. 



Cambarus rusticus Girard. 



New localities: — Iowa : West Fork of Des Moines River, Spring Vale, 

 Humboldt Co. (M. C. Z.). Ohio: Sandusky River, Fremont, Sandusky Co.; 

 Presque Isle, Perrysburg, Wood Co. Indiana: Moot's Creek, Wliite Co.; 

 Salmonie River, Mount Etna, Huntington Co. Kentucky: Salt River. 

 Tennessee: Richland Creek, Nashville, Davidson Co. (U. S. N. M.). 



Cambarus neglectus Faxon. 



Neiv localities: — Missouri: Indian Creek, McDonald Co. (U. S. N. M.). 

 Colorado : Republican River, Wray, Yuma Co. (M. C. Z.). 



Cambarus spinosus gulielmi, subsp. nov. 



Cambarus spinosus Hay, Proe. U. S. Nat. Mus., 1902, 25, p. 439 {ncr Bandy). 



Cephalothorax shorter than the abdomen, densely punctate above, gran- 

 ulate on the sides, the granules largest on the hepatic region where they assume 

 the form of small tubercles; the whole surface, but more particularly the sides, 

 is clothed with fine setae arising as pencils from the pits of the dorsal surface and 

 the granules of the sides; the rostrum is deeply excavated above, its sides paral- 

 lel from the base to the lateral pair of teeth at the base of the moderately long, 

 triangular apex; the post-orbital ridges are prominent and provided with a 

 small tooth at the anterior end ; the sula-orbital angle is obUterated, but there 

 is a well-developed branchiostegian spine, as well as a lateral spine on the cervical 

 groove; the section of the carapace behind the cervical groove in the median 

 dorsal line is a little less than one half the distance from the cervical groove 

 to the tip of the rostrum. Areola of moderate width. The anterior segment 

 of the telson bears two spines on each side. The anterior process of the epis- 

 tome is moderately broad, its sides convex, its anterior angle rounded off. The 

 antennal flagella are long and slender, — longer than the body ; the scale or scapho- 

 cerite is of moderate width, widest at a point a little anterior to the middle. 

 The chelae, like the carapace, bear numerous setae springing from the pits and 



