ENTOPHYTES. 



[ 232 ] 



ENTOSTHODON. 



taining the ova and young; eye very 

 large; legs four pairs, not contained 

 within the shell. 



Fam. 3. LYNCEID^E. Superior antennae 

 very short ; inferior of moderate size, 

 branched, each branch three-jointed; 

 legs five pairs ; eye single, with a black 

 spot in front; intestine convoluted, 

 having one complete turn and a half. 



Acroperus, Alona, Camptocercus, 

 Chydorus, Eurycercus, Peracantha, 

 Pleuroxus. 



See CRUSTACEA and SIPHONOSTOMA. 

 BIBL. Baird, Brit. Entomostr.; M.-Ed- 

 wards, Hist. nat. d. Crustac. iii. ; Straus, 

 Mem. d. Mus. d. Hist. nat. 1819. v. p. 380, 

 and 1821,vii.p.33; Koch, Deutschl. Crustac.; 

 Desmarest, Cons. Gen. s. I. Crustac. ; Jones, 

 Entom. of the Cretaceous form. (Palceontogr. 

 Soc.); Zenker, Miiller's Archiv, 1851, 

 (Micr. Trans, i. p. 2/3), and the Bibl. of the 

 genera. 



ENTOPHYTES. A general term applied 

 to parasitic plants (chiefly Fungi), growing 

 in the interior of animal or vegetable struc- 

 tures. See PARASITES, VEGETABLE. 



ENTOPLYA, Ehr A genus of Diato- 

 maceae. 



Char. Frustules prismatic, compressed, 

 multivalve (?); valves contiguous, in a simple 

 straight series like the leaves of a book, the 

 inner ones with a very large median aperture, 

 the two end valves transversely striated, not 

 alike, one of them being convex outwards and 

 entire (not perforated), the other concave, 

 and with a large pore (?) at each end. 



It is stated to approach Achnanihes in the 

 curved form; in its tabellar form, Tessella, 

 and that it most nearly agrees with Biblarium. 

 E. australis (Surirellal austr. K.). Valves 

 linear, rounded at each end, with more than 

 forty transverse costa3, traversed by a longi- 

 tudinal flexuous line; inner plates in the 

 adult state sixteen, in the young state only 

 three ; marine, and found in guano ; length 

 1-240", in the young state 1-720", and with 

 only six costae between the pores. 



(The pores are probably only inflated pro- 

 ductions of the valves, like those of Biddul- 

 phia; and the plates are perhaps only hoops; 

 they are not valves, because the holes in 

 them are continuous, so that there is but a 

 single cavity in the frustule.) 



BIBL. Ehr. Ber. d. Berl. Akad, 1848. p. 6. 

 ENTOSELENIA, Ehr. A genus of La- 

 gen as. 



Char. Shell calcareous, globose or ovate, 

 sometimes compressed, with a tube arising 



rom the orifice and projecting downwards 

 nto the cavity of the shell. 



These elegant organisms are found living, 

 adherent to marine algae, fuci, &c., and fossil 

 n sea-sand and mud. 



E.globosa(P\. 19; fig. 19 b, longitudinal 

 section). Shell ovato-globose, smooth, not 

 compressed ; mouth slightly projecting, ob- 

 tuse; internal tube patulous at the extre- 

 mity, and sometimes reaching nearly the 

 Bottom of the cavity. 



Very rare. Shell densely perforated with 

 very minute foramina; length 1-144". 



E. marginata. Shell nearly orbicular, 

 smooth, compressed, surrounded by a thin 

 marginal layer; mouth slightly and gradually 

 produced ; internal tube usually curved ; 

 length 1-150". 



a. lucida. Elongate, pyriform, marginal 

 lamina thickened, tube mostly straight ; 

 length 1-80". 



E. lineata. Shell ovate, truncate, some- 

 times with a minute neck ; surface with fine 

 longitudinal striae; tube straight, nearly 

 reaching the bottom; dull leaden colour; 

 length 1-120". 



E. squamosa. Shell ovato-globose, neck 

 minute; surface pitted, pits irregular in 

 form and arrangement ; tube patulous ; 

 length 1-127". 



a. catenulata (PI. 19. fig. 20). Pits very 

 small, square or hexagonal, arranged in lon- 

 gitudinal rows ; length 1-100". 



$. scalariformis. Pits as in the last, but 

 few and large; length 1-115". 



y. hexagona (PI. 19. fig. 23). Pits large, 

 hexagonal, not in distinct longitudinal rows; 

 length 1-130". 



BIBL. Williamson, Ann. Nat. Hist. 1848. 

 i.p. 1. 



ENTOSTHODON, Schwagr. A genus 



Fig. 200. 



Entosthodon Templetoni. 

 Fragment of the peristome. Magnified 100 diameters. 



of Funariaceae (Acrocarpous Mosses), inclu- 

 ding some of the Gymnostoma and Weissice 

 of authors. 



