148 KANSAS UNIVERSITY SCIENCE BULLETIN. 



the inner part. The costals are ten in number, two to each brachial, 

 large, nearly three times as broad as high, and convex. The distichala 

 are sometimes present and sometimes wanting, very broad and thin 

 when present. Arras ten, broad, outer surface of each nearly flat 

 massive, composed of two series of interlocking plates, each one of 

 which bears a pinnule. Pinnulae long and narrow. The articular 

 surface of the arm plates is minutely crenulated. These plates de- 

 crease in length though but little in height as they approach the tips 

 of the arms. The surface of almost the entire animal was ornamented 

 with granules, and the lower part with both granules and pustules. 



Measurements: height. breadth. length. 



Calyx 11 mm. 30 mm. 



Basals (vertical) 5.}" 12 " 



Radials 9 " 18+" 



Brachials 7 " 17 " 8 mm. beyond calyx. 



Costals 4 " 9 to 11 mm. 



Distichals 2 " 9 



Arm plates 2 " 3 to 5 " 



Interradial 7 " 6 " 



Aside from the markings mentioned, the calyx is also ornamented 

 with depressions which look at first like borings of some kind, but 

 which have the same granular character as the rest of the surface. 



Position and locality : Carboniferous, Upper Coal Measures, To- 

 peka, Kan., from the Osage City shales, over the Osage coal. 



The type was collected by Prof. W. A. Harshbarger, in honor of 

 whom it is named. Type now in the collection of Washburn College. 



In general appearance this species is strikingly like C. crai(/i> 

 Worthen. but differs in the following respects : The body is not 

 smooth but highly ornamented, and the anal piece is much larger. 

 In all specimens of C. craigii that I have seen the body is smooth 

 and glossy, and shows (even when apparently unworn) no indications 

 of former surface-markings, while this species possesses both pustules 

 and granules, the latter covering abont the entire specimen. In ma- 

 ture individuals the interradial is much larger. Two smaller speci- 

 mens, probably younger ones of this species, are figured in the 

 accompanying plate, showing the relative growth of the calyx and 

 interradial. In both the ornamentation is the same as described in 

 this species. C. monticulatus Beede is from the same locality and 

 horizon, but has long, slender arms, brachials not spinous, and the 

 calyx is deeper. The most fundamental difference, however, is the 

 number of arms possessed by the latter species, the number being 

 sixteen or eighteen, while the one here described has but ten. 



C. nodulifera Butts ditfers from this species in having a node at 

 the upper part of each basal and also on the radials. It also has 



