ORTHOPTERA. 115 



front of the head. 0. concinnum is found in Massachusetts; this 

 also has a dark streak extending down the front to the labrum, but 

 it expands broadly in the middle of the face. 



4. Conocephalus. — This genus includes the largest of our meadow- 

 grasshoppers. It differs from the genera already named in having 

 the head prolonged into a cone-shaped projection. The species are 

 found in trees as well as in grass, having a strong resemblance to the 

 katydids both in appearance and habits. The most common species 

 throughout the eastern part of our country is C. ensiger. Both sexes 

 have very long wings ; and the ovipositor of the female is remarka- 

 ble for its length. The length of the body from the tip of the head 

 to the end of the abdomen is 30 mm. (1.2 inches), while the distance 

 from the tip of the head to the end of the wings or ovipositor is twice 

 that amount. Two distinct forms of this species occur ; one is pea- 

 green, and the other is of a brownish straw color. C. robiistus is a 

 stouter species than the preceding, and has a shorter ovipositor. 

 This also exhibits dimorphism, being either pea-green or brown in 

 color. The specimens in our collection are from Cape Cod and New 

 Jersey. I have not seen any notice of its occurring in the interior. 



III. The Katydids. 



The song of the Katydids is known to every lover of Nature 

 that lives in the country. But the insects themselves are much less 

 familiar. Only the careful and patient observer succeeds in tracing 

 the well-known and oft-repeated " Katy-did, Katy-did " or " Katy- 

 she-did " to its source. The successful ones are rewarded by the 

 sight of a beautiful insect. The Katydids, of which there are in the 

 United States at least a dozen species, are large green grasshop- 

 pers with broad, leaf-like wing-covers and long, delicate antennae. 

 They differ from the meadow grasshoppers in being arboreal. 

 The}- are protected from observation by the color and shape of their 

 tegmina, which resemble the leaves of trees. Although the}- feed 

 upon the foliage of the trees which they inhabit, it is rare that they 

 are sufficiently abundant to be of economic importance. The only 

 locality in which I have known them to be injurious is Florida, 

 where the} - infest orange-trees. 



Our species represent four genera. These can be separated by 

 the table given above. 



5. Cyrtophyllus. — The true Katydid, the one whose song sug- 

 gested the popular name, is Cyrtophyllus concdvus. This has been 



