CRUSTACEOLOGY. 



427 



Arachni- 

 des. 



Venato- 

 rius. 



Levipes. 



48. Oito- 

 ris. 



Variegatu; 



Liaeatus. 



49. Store' 

 jja. 



SO. 



Cte- 



NHi 



. 



51. 



Ltco- 



9A. 





Taientula. 



treille, in honour of the celebrated zoologist, Lamarck, 

 who first instituted the Arachnides as a distinct class. 



B. Eyes disposed in a semicircle ; the under part of 

 the tarsi scarcely hairy ; the third pair of feet longer 

 than the fourth. 



S-p. 7. Venatorius. Yellowish-red; abdomen yellow- 

 grey, clouded with ash-grey ; feet spotted with black. 



Aranea venafdria, Linne. Arartea pallens? Fabr. 

 'Ihomisus venatorius, Latr. 



Inhabits the American islands. 



C. Eyes disposed in a circle ; tarsi scarcely hairy be- 

 neath ; third pair of feet longer than the fourth. 



Sp. 8. Levipes. Body grey, spotted with black; 

 abdomen plain, rhomboidal. 



Aranea levipes, Linne, Fabr. Thoviise tigre", Walck. 

 p. 34. Thomisus Rgrinus, Latr. T. levipes, Leach's MSS. 



Inhabits the European trees, running swiftly. 



Genus XLVIII. Oxvopes, Latr. Sphasus, Walck. 



Maxillae straight, longitudinal, and elongate, of an 

 equal breadth nearly from base to apex ; apex exter- 

 nally gradually arcuated or bent, internally obliquely 

 truncated. Lip oblong-quadrate. 



Feet long and slender, the first pair longest, then the 

 fourth and second, which are nearly equal ; tarsi short ; 

 nails exserted, no brush beneath. 



Sp. 1. Variegatus. Body hairy and grey, variega- 

 ted with red and black; feet pale reddish, spotted 

 with brown ; the little spines on the tibiae lengthened. 



Sphase helerophthalme, Walck. p. 19. Oxyopes varie- 

 gatus, Latr. 



Inhabits France. The bag containing the eggs round, 

 depressed, and white. 



Sp. 2. Linealus. Mandibules, thorax, and feet, pale 

 reddish-yellow ; mandibules with a line ; thorax with 

 three longitudinal fasciae of a brown colour ; abdomen 

 obscurely brown, with longitudinal pale reddish-yel- 

 lowish lines ; the dorsal line branched or forked before. 



Oxyopes lineatus, Latreille, {Genera Crust, et Insect. 

 vol. i. plate 5, fig. 5.) Inhabits France. 



Genus XLIX. Storena, Walckenaer's MSS. Latr. 



Eyes forming a nearly equal hexagon, disposed in 

 three transverse lines thus, 2, 4, 2. 



Maxillae much longer than the lip, which they cover. 



Lip oval and lengthened. 



Observation. Of the species in this and the follow- 

 ing genus we can say nothing, as the genera are un- 

 known to us, and Latreille has not even hinted at the 

 name of a species ; notwithstanding this, we conceived 

 the genera ought to be introduced, as it is not impro- 

 bable that some British species will be found referable 

 to one or other of them. 



Genus L. Ctenus, Walckenaer's MSS. Latreille. 



Eyes forming an elongate curved angulated line, 

 very open behind, disposed in three transverse lines 

 thus, % 4, 2. 



Maxillae longer than the lip. Lip quadrate. 



Genus LI. Lycosa, Latreille, Walckenaer; Ara- 

 nea, Linne, Fabricius, Lamarck, Olivier. 



Maxillae straight, anteriorly convex, externally to- 

 wards the side somewhat arcuated, internally slightly 

 marginated, gradually narrowing towards the base ; 

 apex obliquely truncated, almost an inverted triangle. 



Lip elongate, quadrate. 



Feet strong ; the fourth, then the first, after these 

 the second, longest, the third short. 



Sp. 1. Tarentula. Upper part of the body greyish- 

 brown ; mandibules and middle of the palpi ferru- 

 gineous, the apex of the latter black ; thorax with a 

 grey margin, and radiated dorsal line of the same co- 

 lour ; anterior part of the dorsum of the abdomen with 



triagonal spots, hinder part with bent, transverse, black 

 strigae, margined with white; belly of a fine crocus 

 yellow, with a transverse black band ; thighs and tibiae 

 below reddish-white, with two black spots. 



Aranea tarentula, Linne, Fabr. Lycose tarentule, 

 Walck. p. 11. Lycosa tarentula, Latr. 



Inhabits the South of Europe. 



Observations. Lycosa tarentula Narbonensis of Walck- 

 enaer, is much smaller than the preceding species; 

 and the belly is black, with a crocus-coloured anus. 



Sp. 2. Ruricola, greenish-livid-brown, with the mar- 

 gins and abbreviated dorsal line at the base of the ab- 

 domen, with the ridge of the thorax and feet pale 

 brown, inclining to livid ; the back of the abdomen on 

 each side with a double parallel longitudinal series of 

 fine, small, livid-brawn spots. 



Lycose agrctique, Walck. Lycosa ruricola, Latr. 



Inhabits France and Britain, is common early in 

 spring, occurring in marshes and thick woods. 



Sp. 3. Saccata. Body above, smoke-coloured, in- 

 clining to black, clouded with ash-coloured hairs ; the 

 ridge of the thorax obscure reddish, with an ash-grey 

 line; the base of the back of the abdomen with a little tuft 

 of hairs; feet livid red, intersected with blackish marks. 



Aranea Lyonelti, Scopoli. Lycose a sac, Walck. L'a- 

 raignee Loup, Geoffroy. Lycosa Saccata, Latr. 



Inhabits European gardens and cultivated grounds ; 

 is very common. The female carries her bag of eggs 

 about with her, the external covering of which is ge- 

 nerally a bluish-green, or greenish-blue. The palpi, 

 mandibular, and front of the thorax, livid red in the 

 female, black in the male. 



Sp. 4. Velox. Feet grey-reddish, annulated with 

 black ; belly and anus ash-grey ; a large red spot at 

 the base of the abdomen, mixed with grey, of a spear 

 shape ; middle of the back with a black transverse band, 

 with two spots, and an intermediate splatch of grey. 



Lycosa velox, Walck. Aranea perita {Bullet, dc la 

 Soc. Philom. No. 22.) 



Gen. LII. Dolomedes, Latreille, Walck. — Aranea, 

 Linn. De Geer. Fabr. 



Maxillae straight, oval- quadrate, the apex externally 

 rounded, internally obliquely truncated. 



Lip somewhat square, the diameters nearly equal, 

 the points of the angles rounded. 



Feet elongate, the fourth longest, then the second, 

 and afterwards the first. The nails of the tarsi ex- 

 serted, with no brushes below. 



Sp. 1. Mirabilis. Pale-reddish, covered with grey- 

 ish down; thorax heart-shaped, anteriorly abruptly 

 sloping ; with the anterior angles and dorsal line whit- 

 ish; abdomen conical, inclining to oval, back darker. 



Aranea saccata? Linne? Aranea obscura, Fabr. 

 Aranea sisleri, Scopoli. Dolomede admirable, Walck. 

 p. 16. Dolomedes mirabilis, Latr. 



Inhabits Europe, residing in woods. The female is 

 often to be seen carrying about her bag of eggs, the 

 covering or bag being of a greyish dirty yellow colour. 



Sp. 2. Marginatus. Thorax and upper part of the ab- 

 domen obscure brown, the sides margined with white ; 

 thorax oval, truncated before; abdomen oval; feet green. 



Dolomide borde, Walck. Dolomedes marginatus, Latr. 



Inhabits most woods and marshes in Fiance, Ger- 

 many, Sweden, and England. 



II. Feet formed for leaping. Thorax not carinated. 



Gen. LIII. Eresus, Walck. Latr. — Aranea, Villers. 

 Rossi. Olivier. 



Maxillae straight, longitudinal, and somewhat wedge- 

 shaped ; the apex broader, rounded externally, inter- 

 nally obliquely truncated. 



Rurico!?. 



Saccata- 



Velox. 



52. DOLO- 

 MEDES. 



Mirabilis. 



Margina- 

 tus. 



53. Er«- 



!U5. 



