98 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



2. Median carina rather high, the notch narrow, disk of 

 prozona not elevated (Fig. 29a). Hind tibia? with 

 a pale ring followed by an equally wide dusky band 



bolli 

 Median carina lower, the notch deeper and more open, 

 disk of prozona somewhat elevated (Fig. 29c). Hind 

 tibiae very rarely with a distinct dark band following 

 the light basal ring saxatile 



S. collare Scudder, vars. scudderi Morse, and wyomingia- 

 num Thomas. 



These two forms of collare are readily distinguished from 

 bolli and saxatile by the characters given in the key. The general 

 color is pale yellow to pinkish brown in wyomingianum, often 

 more rusty in scudderi and thickly sprinkled with dark brown 

 or fuscous. The face is often ash-gray, the disk of the pronotum 

 usually with an indistinct, pale, X-shaped mark. Tegmina with 

 the dark markings arranged in more or less distinct bars. Hind 

 femora grayish brown with traces of four dark bars on the outer 

 face. Hind wings pale yellow with the median band nearly or 

 quite reaching the anal angle. Sub-frontal shoot reaching one- 

 third to one-half the distance to the base of the wing. Hind 

 tibiae coral-red, more or less sprinkled with dusky spots at base. 



The typical collare is distributed throughout the central states 

 but does not occur in Connecticut. 



Morse points out the difference between scudderi and wyom- 

 ingianum as follows: — "Wyomingianum may be readily dis- 

 tinguished from scudderi by its inferior size, the female of the 

 former about equaling the male of the latter. In wyomingianum 

 the head is less compressed, especially above ; the eyes are much 

 larger proportionally and are more prominent ; and the antennae 

 are longer in proportion. The facial costa is rather more sulcate, 

 especially in the male. The pronotum presents no distinctive 

 characters, though in wyomingianum it is rather less compressed, 

 and the posterior process rather more acute than in scudderi. 

 In wyomingianum the hind femora are less distinctly fasciate 

 externally, and internally show a decided difference; in wyom- 

 ingianum the proximal fuscous band is obsolete ventrally, and 

 the proximal two are not connected ; while in scudderi the proxi- 

 mal band is complete, and the proximal two are broadly con- 



