| OCR Text |
Show 1896.] OF THE GENUS SERGESTES. 949 GROUP I. Mxp.3 at most but little longer, sometimes shorter than trl.3, its first joint rarely, the second-fourth joints never obviously incrassated in proportion to the joints In trl.3, its two distal joints with numerous bristles along both margins. (In the Mastigopus, S. longlsplnus, Bate, the first joint is somewhat incrassated, the fifth joint with but few bristles, the sixth only with setae along the one margin.) A. On the ext. br. of urp. the ciliated part never occupies the half of the exterior margin. a. The body very long and slender; the distance between the eye-stalks and the mandibles very long. S. tenuiremi s, Kr., H . J. H. S. junceus, Bate. S. longicollus, Bate. The body shorter and less slender ; the distance between the eye-stalks aud the mandibles not very long. a. The first joint in the antenn. ped. about as long as or shorter than the third. '*S. atlanticus, M.-Edw. (S. frisil, Kr., S. pacificus, Stimps.). S. ancylops, Kr. S. ovatoculus, Bate. J *S. cornutus, Kr. \ S. longlsplnus, Bate. *S. Inous, Faxon.1 ft. The first joint in the antenn. ped. considerably or much longer than the third. 1. The second and third joints in the antenn. ped. stout. *S. robustus, Smith. *S. japonlcus, Bate (S. mollis, Smith). *S. blsulcatus, Wood-Mas. (S. phorcus, Faxon, olim). 2. Tbe second and especially the third joint in the antenn. ped. slender, (the arctlcus-gvo\iy.) r*8. arctlcus, Kr. (S. meyeri, Metzger, S. magnificus, Chun). S. rlnkii, Kr., vix Bate. S. dissimilis, Bate. S. medlterraneus, n. sp. *S. pr eh en sills, Bate. *S. kroyer I, Bate. f S. dorsosplnalls, Bate. 1 S. latervdentatus, Bate. S. nasidentatus, Bate. (S. rlnhll, Bate, vix Kr.) S. Icevlventrails, Bate. *S. rubroguttatus, Wood-Mas. 1 According to the description this species must belong to this subdivision, but it does not agree with the figure (op. cit. pl. Ii. fig. 2), which shows the first joint a little longer than the third. |
