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



is more distinctly margined with black, and in the male the black 

 dashes on the tegmina are larger. The tegmina of the male 

 surpass the hind femora by about 4 mm., and the wings are about 

 4 mm. longer than the tegmina. 



The measurements given by Blatchley are as follows : — 



Body Pronotum Tegmina Hind Femora Ovipositor 

 Female 23 6.5 24-27 20 8.5 



Male 22 6 26 19 



This insect should be looked for in locations similar to those 

 frequented by the preceding species. We have no record of this 

 species, but Scudder in his New England catalogue gives 

 "Connecticut' as a locality in which it has been found. 



DECTICIN.E. 



The members of this sub-family are wingless or with very 

 rudimentary wings. The hearing organs are small and narrow, 

 situated near the base of the fore tibiae, the latter having an 

 apical spine on their outer upper side. 



" The tarsi are all more or less depressed, and their first two 

 joints are sulcate lengthwise on the sides; while the first joint of 

 those of the hind legs bears a free plantula (pad) beneath its 

 base." — Blatchley. 



This sub-family is well represented in the West, but in 

 Connecticut we have but one genus with two species. 



Atlanticus Scudder. 



Head with rounded face and small, nearly round eyes. Face 

 broad ; vertex extending between the antennae in the form of a 

 blunt, decurved ridge. Pronotum flattened on top, narrowed in 

 front, and extending back over first abdominal segment ; posterior 

 margin well rounded, lateral lobes bent abruptly downward, 

 lateral carinae sharp. Tegmina of females rudimentary, wholly 

 covered by the pronotum ; those of the male about half as long 

 as the body. Stridulating organ of male covered by pronotum. 

 Wings very rudimentary or wanting. Posterior femora long and 

 rather slender, passing the end of the abdomen in both sexes. 

 Ovipositor stout at base, straight, about as long as the body. 



The members of this genus are called " shield-back grass- 

 hoppers " on account of the large pronotum. 



