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Show 259 II. Sixth antennal joint as long, or very nearly as long, as the first. t 6. unidentata Pal. Ferruginous; antennae paler, 11- joint-ed; pronotum also paler, no longer than broad, scarcely narrower than the head; tegmina twice as long as the pronotum; wings pale yellowish, as long as the pronotum ; legs pale ferruginous; forceps ( of female!) nearly straight, scarcely bent inward, with a small postmedian inner tooth, the apex blunt, incurved. Body 7mro ; forceps 2mm. St. Domingo. 7. rotundata Scudd. Dark mahogany- brown; antennae 10jointed, the basal joint, like the palpi, reddish-brown, beyond duskier; pronotum nearly as broad as the head, scarcely longer than broad, reddish- luteous, paler on sides; tegmina about half as long again as the pronotum, brownish luteons; wings blackish; legs luteous; abdomen broad, blackish toward the base: forceps of male unknown, of female scarcely one- third as long as the abdomen, simple, separated, straight, incurved at tip. Body 6rom; forceps 1.5mm. Mexico. 1 8. annulata Fabr. Black; antennae 13- jointed, the first and penultimate joints with the mouth- parts pale; pronotum flat, the margin pale; legs pale, the femora with a fuscous annulation; forceps short, unarmed. Of small size. West Indies. Pace. Thermaetria Chontalia § 49 Sauaaurei 249 Labidura riparia 350 advena 250 Paalia gagatina 250 prooera 251 americana 251 Aniaolabia azteca 251 maritima 251 SpongopDora brunneipennie 252 prolixa 252 parallela 252 forfex 252 Index of species. Page. Neolobophora volaella 253 Ancistrogaster guloaa 2 > 3 spinax . . . . 254 Forflcula albipea 255 bimaculata 255 Percberoni 255 lagubris 255 aaricalarla 255 twniata 255 tolteca 256 exilis 256 californica 256 pulchella 256 Page. Forflcula oculeata 256 ruflcepe 256 vara 257 elongata 257 Labia Burgeaal 258 brunnea 258 guttata 258 melaocholica 258 minor 259 unidentata 259 rotundata 259 Note on the fossil species. annulata 259 In this bulletin ( II, 447- 448), to which the reader is referred for full particulars, I described Labidura tertiaria from the Tertiary beds near Castello's ranch, South Park, Colo. By some accident, I described the single specimen known as a female; it is a male. A second specimen of this species, too broken to determine the sex, from near Florissant, Colo. ( perhaps the same locality as the preceding), has been kindly placed in my hands by Prof. A. E. Poote. It shows that the species should hardly be referred to Labidura, but it seems to agree quite as little with any other living genus. Both the specimens, however, are too imperfect in the parts necessary to be studied in determining genera in this group, and especially in the tarsal and antennal joints, to warrant any change, and I await more material to determine the precise relationship of the animal. Another specimen from near Florissant ( Prof. A. £. Foote) evidently belongs to the same genus as the preceding, but differs specifically, and may be called Labidura lithophila. It is a female; the body is much flatter than that of Labidura tertiaria} the abdomen beiug equal on a side- view, and the whole surface appears to be minutely punctulate; the |
