44 MATERIALS TOWARDS A HISTORY 



drical, slightly thickened at tip, third longest, subsequent ones subequal, tip of the third 

 and several of the succeeding ones with a spine; palpi with the terminal articulation 

 obconic, truncate: prothorax cylindrical, narrower than the head and elytra, and double 

 the length of the head : elytra subparallel, punctate scabrous, tipped each with two 

 spines : feet long and slender. 



In the armature of the antenna; and elytra this genus approaches Elaphidion; and 

 Ibidion in form. 



107. S. unicolor, Randall. 



Pale-yellowish testaceous, elytra paler; eyes black, coarsely reticulate. M'" long. Hab. sea coast of Vir- 

 ginia. Bost. Coll., No. 564. 



Ibidion plochionocerum, Dej. Head with numerous impressed punctures, prominent between the antenna?, 

 two little tubercles in front of this, medial line fine, obsolete on the vertex, where the punctures are smaller and 

 less crowded; inner edge of the mandibles black: prothorax with a slight, transverse, impressed line at each 

 extremity; sparsely punctured, and having a few hairs: elytra irregularly and coarsely punctate, having a 

 small, sutural spine, and a larger one at the external angle: feet slender, femora thickened beyond the middle. 



IBIDION, Serv. Ann. Ent., iii. 103. 



108. I. linearis, Dcjcan Catalogue. 



ANCYLOCERA, Serv. Ann. Ent., iii. 107. 



109. A. rugicollis, Fabr. (Gnomo.) Syst. El., ii. 317. Saperda hicolor, Oliv., iv. pi. 3, f. 25. 



110. A. lividipennis, Le Contc. 

 Black, elytra yellow. 6'" long. 



STENOPTERUS, Jllig. Serv., Ann. Ent., ii. 545. R. A., (Ed. nov.) pi. 66, b. fig. 2. 



111. S. rufus, Lin. Harris, Cat. Fabr., ii. 372. Oliv., iv. pi. 1, fig. 6, a. b. 



112. S. sanguinicollis, Say. Bost. Journ. Nat. Hist., i. 194. 



Olivier has a North American species under the same name, (pi. 74, fig. 7,) which is 

 probably identical with the collaris of Forster, Cent. i. 46, Lin. Gmel., p. 1881, No. 24, 

 and with crucntatits, Dej. Cat. 



NECYDALIS, Lin. Serv., Ann. Ent., ii. 543. R. A., pi. 66, bit. fig. 3. 



113. N. AMERICANUS. 



Rufo-testaceous; head, antenna\ (base and tip tinged with rufous,) thorax, scutel, and abdomen above, black: 

 elytra punctate, more coarsely towards the margin; reddish-brown, with a pale-yellowish spot at tip. 

 10 lines long. Inhabits Pennsylvania. Molorchus americanus, Dej. Cat. 



114. N. mellitt/s, Say. (Molorchus.) Boston Journ., i. 194. Harris, Hartf. Ti\, p. 89. 

 Molorchus cylindricus, Dej. 



MOLORCHUS, Fabr. Mulsant, 107. 



115. M. bimaculatus, Say. Journ. Acad., iii. 428. M. affinis, Le C. Ann. Lye. N. Y., 



i. pi. 11, fig. 12. 



Varies considerably in size. Inhabits from Massachusetts to Alabama. Found in the 

 blossoms of Cornus fiorida, in April and May, in Pennsylvania. 



