454 EEPOET OF STATE GEOLOGIST. 



first joint prolonged beneath, forming an acute blackish tooth. Inner 

 wings much produced beyond the tegmina. Legs pale with a pink- 

 ish hue. 



Measurements: Length of body, male and female, 13 mm.; of pro- 

 notum, 3.3 mm.; of tegmina, 11 mm.; of inner wings, 20 mm.; of 

 hind femora, 9 mm.; of ovipositor, 6 mm. 



This tree cricket is readily recognized by its unarmed hind tibiae, 

 pinkish brown color, long inner wings and dark spots on female 

 tegmina. It is scarce in Indiana, having as yet been taken only in 

 Vigo County, though it will doubtless be found to occur throughout 

 the State. So far as known, its habits are the same as those of the 

 more common species of (Ecanthus. 



Sub-family TRIGONIDIIN^. 



The Indiana members of this sub-family are among the smallest 

 of our native Gryllida?. They are distinguished mainly by the differ- 

 ent character of the second tarsal joint, which is depressed and heart- 

 shaped, instead of compressed, as in the preceding sub-families. The 

 tympanum or shrilling organ of the male is more simple than in other 

 species, being divided by a single oblique vein. The hind tibijB have 

 no serrations between the spines and bear but two apical spurs on 

 the inner side. The ovipositor resembles that of some of the Locus- 

 tidae in being short, compressed and saber-like. 



Three genera represent the sub-family in the United States. Of 

 these two occtir in Indiana. 



KEY TO OENERA OF INDIANA TRIGONIDIIN^. 



0. Last joint of inaxilliiry palpus clul) shaped; basal joint of antennxe 



sub-deprossod, rather larse LX. Anaxipiia, p. 454 



aa. Last joint of maxillary palpus very broad, spoon-like; basal joint of 

 antenna) narroAV, minute LXI. Phylloscirtus, p. 45G 



LX. Anaxipha Saussure (1874). 



The members of Ihis genus resem1)le those of Nemdbius in form of 

 body, breadth of head, etc., but the females are readily distinguished 

 by the compressed and strongly upcurved ovipositor. The antenna; 

 are very long and setaceous, the first joint being rather large and a 

 little flattened. Ocelli present, but small and arranged in a triangle. 

 ]\Iaxillary palpi rather long; the last joint dilated in the form of a 

 funnel. Tegmina of male almost encasing the abdomen, the specu- 

 lum or nnnul glassy spot on llieir apical half prominent and undi- 



