ANTROPHYUM. 



ANYSTIS. 



species, the extremity of each maxilla is 

 furnished along its anterior and lateral 

 margin with a great number of minute 

 papillae. These, in Vanessa Atalanta (the 

 red admiral butterfly) for instance, form 

 little barrel-shaped bodies (fig. 286, #,/)> 

 furnished at the free end with three or more 

 marginal teeth, and a larger pointed body in 

 their centre. There are seventy-four of 

 these in each maxilla, or half the proboscis. 

 Newport regards them as probably organs 

 of taste. There are also some curious ap- 

 pendages arranged along the inner anterior 

 margin of each maxilla, in the form of 

 minute hooks, which, when the proboscis 

 is extended, serve to unite the two halves 

 together, by the points of the hooks in one 

 half being inserted into little depressions 

 between the teeth of the opposite side ; 

 sometimes these are furnished with a tooth 

 below the apex (fig. 28 <?) . 



This description of the structure of this 

 interesting organ does not appear to be 

 correct. We believe that the older view, 

 regarding each half of the Antlia as con- 

 taining a distinct canal, to be true, and 

 that the transverse rings, in fact the entire 

 frame-work of the organ, consists of chitine. 

 But the subject requires further investiga- 

 tion. The only muscular structure we have 

 detected in the organ, consists of bundles of 

 muscular fibres taking an oblique longitu- 

 dinal direction. 



BIBL. Newport, Todd's Cycl. of An. and 

 Phijs. ii. p. 901 ; Hicks, Linn. Tr. 1860, 

 xviv. p. 148. See also INSECTS. 



ANTRO'PHYUM, 

 Kaulf. A genus of 

 PolypodiaceousFerns, 

 fain. Grammitideae. 



Char. Sori carried 

 along the veins, im- 

 perfectly reticulated, 

 superficial or immers- 

 ed in a groove. 



Fronds simple, of 

 firm fleshy texture, 

 with uniform hexago- 

 nal areolse. 16 species; 



exotic. Antrophyumplantagineum. 



BlBL. Hooker, Sp. Partofasorus. Magnified. 



Fil p. 392. 



ANUR^E'A, Ehr. A genus of Rotatoria, 

 of the family Brachionaea. 



Char. A single (red) eye-spot at the back 

 of the head, no foot or pediform tail. 



In seven species the back of the carapace 

 is furnished with facets, in four with longi- 



Fig. 25. 



tudinal striae, in three it is smooth; in 

 thirteen it is furnished with teeth or spines 

 in front, in seven also behind. One species, 

 A. biremis, has two moveable spines on each 

 side. 



Dujardin gives the following characters. 

 Carapace in the form of a depressed utricle 

 or sac, toothed in front and with a wide 

 orifice to allow of the protrusion of the rota- 

 tory organs, which are usually well developed 

 in the form of two rounded lobes, accom- 

 panied by setae or non-vibratile cilia in 

 several bundles ; no tail ; jaws digitate ; a 

 red eye-spot above the jaws; ova volumi- 

 nous, often adherent to the parent. 



The species are both aquatic and marine, 

 and many of them are common in pure fresh 

 water; length from 1-240 to 1-10". 



Ehrenberg describes 14 species j to which 

 Gosse adds 4. 



A. curvicornis, E. (PL 43. fig. 5, viewed 

 from above ; fig. 6, side view). 



BIBL. Ehr. In/us. ; Duj. In/us. ; Gosse. 

 Ann. N. H. 1851, viii. p. 202. 



AN YS 'TIS, Heyd. (Erythraus, Duges; 

 Trombidium, Herm.). A genus of Arach- 

 nida, of the order Acarina, and family 

 Trombidina. 



Char. Palpi large, free, bi-unguiculate ; 

 mandibles unguiculate ; body entire ; legs 

 at their insertion contiguous, cursorial, i. e. 

 unguiculate, long, the last joint slender and 

 very long ; posterior legs tne longest. 



A. parietinum. Colour vermilion ; legs 

 pale. Found between stones and in moss ; 

 and on book-shelves. Tromb. parietinum. 

 Herm. Mem. Apt. p. 37, pi. 1. f. 12. 



A. ruricola. Body very minute, depressed, 

 nearly oval, slightly emarginate at the sides, 

 and broader behind than before; a few 

 hairs scattered over the surface ; eyes two, 

 black, placed at the anterior obtuse angles 

 of the body ; colour bright carmine, some- 

 times blackish in the middle, paler along 

 the back and in front ; legs and palpi colour- 

 less, except a bright red spot on each at a 

 little distance from the body. On stones 

 and on dry paths. (PI. 50. fig. 4, and PI. 2. 

 fig. 8.) 



A. ftava. Yellow. 



A. ignipes. Mottled with greyish brown 

 and yellowish red. 



A. cursoria. Rose colour. 

 A. cornigera. Red with two blackish 

 lines down the back. 



Actineda, Koch, is not generically dif- 

 ferent from Anystis (Murray). 



BiBL. Hermann, Mem. ApteroL; Duges, 



