Proceedings of the United States National Museum . ors were studied. They are ellipsoidal,surrounded by a very thin shell, and are in process of segmenting,the cell mass filling the entire space within the egg. Size 57-66ix longby 33-40pL broad. The type specimen has been deposited in the Helminthological Col-lections of the L^. S. National Museum, where it is registered as Paratypes are also included and are entered as 7805. This species resembles somewhat T. retoitGefonnis^ but differs inthe size and shape of the spicules and gubernaculum, size of the eggs,and various other characte
Proceedings of the United States National Museum . ors were studied. They are ellipsoidal,surrounded by a very thin shell, and are in process of segmenting,the cell mass filling the entire space within the egg. Size 57-66ix longby 33-40pL broad. The type specimen has been deposited in the Helminthological Col-lections of the L^. S. National Museum, where it is registered as Paratypes are also included and are entered as 7805. This species resembles somewhat T. retoitGefonnis^ but differs inthe size and shape of the spicules and gubernaculum, size of the eggs,and various other characters. EXPLANATION OF PLATE. Tricltostrouf/iiJus affiiiis, new species All drawinirs made with a camera lucida. Fig. 1. Dorso-lateral view of bursa .showing dorsal ray, left externo-dorsalray, and all six rays in right lobe of bursa. Spicules and gubernacu-lum shaded X 345. 2. Spicules and gubernaculum X 345. ,,. Posterior end of female X 395. 4. Oviiectors of female, vulva not shown, X 170. o U. S. NATIONAL MUSEUM PROCEEDNGS, VOL. 66, ART. II PL. I. TRICHOSTRONGYLUS AFFINIS, NEW SPECIES For explanation of plate see page 2 A NEW EARTHWORM FROM TEXAS BELONGING TO THEGENUS DIPLOCARDIA. By Frank Smith,Of the University of Illinois, Urbana. The genus Diplocardia includes a considerable number of speciesalready described, and presumably an even larger number yet to bemade known. They constitute a group of indigenous species, ap-parently limited to North America, which exhibit an unusual rangftof variation in the position of the spermiducal pores. The ordinaryposition of these pores in the nearly related groups is on the eight-eenth somite. In the majority of species of Diplocardia they are onthe nineteenth somite; in one species, at least, they are on somite 20;and in still another one, D. keyesi^ they are on somite 21. This last-named species was based on one specimen obtained by Eisen in LowerCalifornia and originally described (Eisen, 1896) under the nameAleodrilus keyesi. The write
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
