BUS. — HIP.] 



CRUSTACEA. 



549 



scorpionis, Grote & Pitt, 1875, (Eusarcus 

 scorpionis,) Bull. Buff. Soc. Nat. Hist., 

 vol. 3, p. 1, Waterlime Gr. 

 stylus, Hall, 1884, Geo. Sur. Pa., PPP, p. 



34, Low. Coal Meas. 

 tetragonopthalmus, Fischer, 1839, Bull. 

 Soc. Imper. Nat. Moscou., Water- 

 lime Gr. 

 Eusarcus, Grote & Pitt, 1875, Bull. Buff. Soc. 

 Nat. Hist., vol. 3, p. 1, syn. for Eu- 

 rypterus. 

 grandis, see Eurypterus grandis. 

 scorpionis, see Eurypterus scorpionis. 

 Fabeiua, n. gen. [Ety. proper name.] 

 Minute crustaceans inclosed in a shell 

 with openings on the edge for the pro- 

 trusion of the feet and antennae. They 

 are referred to the Ostracoda, because 

 the test is like that of Leperditia and 

 Beyrichia, but they are distinguished 

 by being .closed in a single shell ; they 

 are evidently globose, depressed or vari- 

 able in form. Type F. anomala. 

 anomala, n. sp. Minute, subcircular in 

 outline, and flattened on each side ; 

 thickness about one-fourth the diame- 

 ter ; one edge somewhat sharpened ; a 

 slit or open- 

 ing, about 

 eight times 

 as long as 

 wide, exists 

 on the thick- 

 er edge of 

 the shell; 

 and at less 

 than the thickness of the shell distant 

 from the slit, there is a circular open- 

 ing on the edge of the shell, and below 

 this reaching nearly to the thinner edge 

 of the shell, there is a very narrow slit 

 that does not seem to penetrate the 

 test. Found in the upper part of the 

 Hud. Riv. Gr., in Butler County, Ohio, 

 and now in the collection of Charles 

 Faber. 

 Harpes, Goldfuss, 1839, Nova Acta Pbysico 

 rnedica Academiae Caesareae Leopoldino 

 Carolina? Naturae Curiosorum, vol. 19, 

 p. 358. [Ety. harpe, a hook or sickle.] 

 Cephalic shield horseshoe-shaped, 

 very convex cen- 

 trally, flatly ex- 

 panded on the ex- 

 ternal margin, and 

 posterior angles 

 produced in long 

 spines; glabella 

 very prominent, 

 short, front sub- 

 quadrate, posterior 

 part contracted, a 

 curved lateral fur- 

 row on each side 

 separating two el- 

 liptical lobes from the posterior half ; 

 eyes small, near the anterior part of 

 the glabella ; facial sutures from the 

 posterior angles, curving through the 



Fig. 1009.— Faberia anomala 

 Three views, mag. 5diam. 



Fig. 



1010.— Harpes 

 ungula. 



36 



eyes and then to the antero-lateral mar- 

 gins, thoracic segments numerous. 

 Type H. ungula. 



antiquatus, Billings, 1859, Can. Nat. and 

 Geo., vol. 4, p. 468, Chazy Gr. 



consuetus, Billings, 1866, Catal. Sil. Foss. 

 Antic, p. 64, Anticosti Gr. 



dentoni, Billings, 1863, Can. Nat. and 

 Geo., vol. 8, p. 36, Hud. Riv. Gr. 



e scanabse, 

 Hall,- 1851, 

 Geo. Lake 

 Sup. Land 

 Diet., vol. 2, 

 p. 211, Tren- 

 ton Gr. 



grand, Bill- 

 ings, 1865, 

 Pal. Foss., 

 vol. 1, p. 326, 

 Quebec Gr. 



ott a w e n s i s , 

 Billings, 

 1865, Pal. 

 Foss. vol. 1 Fl °- 1011.— Harpes ottawensls. 

 p. 182, Trenton Gr. 

 Habpides, Beyrich, 1846, Untersuchungen 

 Trilobiten als Fort. [Ety. from resem- 

 blance to the genus Harpes.] Cephalic 

 shield semicircular, margin wideand flat, 

 spines at posterior lateral angles ; gla- 

 bella short, narrow, granular ; lobe on 

 each side at base ; cheeks have radi- 

 ating striae; eyes small, joining the 

 front end of the glabella by a small 

 ridge ; thorax with 22 segments, pleurae 

 three times as wide as tne axis. Type 

 H. rugosus. Only fragments have been 

 referred to this genus in America.' 



atlanticus, Billings, 1865, Pal. Foss., vol. 

 1, p. 281, Quebec Gr. or Up. Taconic. 



concentricus, Billings, 1865, Pal. Foss., 

 vol. 1, p. 282, Quebec Gr. or Up. Ta- 

 conic. 



? desertus, Billings, 1865, Pal. Foss., vol. 

 1, p. 333, Quebec Gr. or Up. Taconic, 

 Harttia, Walcott, 1884, Bull. U. S. Geo. Sur. 

 vol. 2, p. 283. [Ety. proper name.] 

 Distinguished from Conocoryphe by 

 having a lobe or elevation in the front 

 of the glabella, small pygidium, and 

 sloping front to the cheeks and frontal 

 lobes. Type H. matthewi. 



matthewi, Hartt, 1868, 

 (Conocephali tes 

 matthewi,) Acad. 

 Geol., p. 646, St. 

 John Gr. 



Hausmannia, Hall, 1888, fig. 1012 — Harttia 

 synonym for Dal- matthewi. Cephalic 

 manites. shield. 



Hemicrypturus, Green, syn. for Asaph us. 



clintoni, Vanuxem, 1843, Geo. Rep. 3d 

 Dist. N. Y., p. 79, Clinton Gr. Gen- 

 eric relation not determined. 



rasoumowski, syn; for Asaphus expansus. 



Hipponicharion, Matthew, 1885, Trans. Roy. 



Soc. Can., p. 64. Breadth nearly equals 



the length; broadly semi-elliptical to- 



