ARACHNOIDEA. 589 



threads to young spiders. Regne Anim. 2 e"d. IV. pp. 219, 220. Comp. J. 

 BLACKWALL Catalogue of British Spiders, including Remarks on their Struc- 

 ture, Functions, Economy and Systematic Arrangement, Ann. not. Hist. 2nd 

 Series, vn. IX. 1851 1853. 



Phalanx I. Arenece tetrapneumones, Mygalides SlJNDEV., KOCH. 

 Spinarets four, two of them large, exsert, two others very short. 

 (Stigmata four, leading to four pulmonary sacs. Ocelli always 

 eight. Claw at the apex of mandible in the same direction as 

 the mandible, capable of inflection downwards, large, incurved). ' 



Mygale WALCK. Ocelli approximate, situated in the anterior 

 part of cephalothorax ( ' :* ). Palps proceeding from the apex 

 of maxillae. Labrum inserted under the base of maxillae, very 

 small, quadrate. Feet hirsute, subequal, first and fourth pairs 

 longer. 



Sp. Mygale avicularia WALCK., Aranea avicularia L., KLEEMANN Beitrage, 

 Tab. xi. xii., DE GEEE Mem. vii. PL 38, fig. 8 ; a large spider of S. 

 America; the body i" 6'" and more, the hind legs 2" 3'"; it lives in a 

 tubular web narrowed behind, in chinks of bark of trees, between stones, 

 &c. ; the female places the web in which she has laid her eggs close to her 

 nest. It has been asserted that these spiders are able to seize small birds 

 (humming-birds), and hence the name of this species; there is, however, no 

 reason to think that the account is founded on any thing better than fable. 

 See on the web and mode of life of this animal LATBEILLE M em. du Mus. 

 vin. 1832, pp. 456 460, and W. S. MAO LEAY Trans, of the Zool. Soc. 

 I. 2, 1834, pp. 179 194. Other similarly large species are also found in 

 the eastern hemisphere, as Mygale fasciata WALCK. Hist. not. des Aran. 

 IV. PI. i ; Ceylon. 



Cteniza LATH. Mandible furnished beneath, near the claw, with 

 a row of homy barbs. 



Sp. Mygale ccementaria LATB., WALCK., Hist. not. des Aran. in. PI. 10: 

 Mygale fodiens WALCK., Mygale Sauvagesii LATR. : these species of southern 

 Europe, which certain exotic species resemble, live in vertical tubular 

 cavities underground, closed by a circular cover as by a door, and lined 

 internally with silken web. On the inside of the cover are small impres- 

 sions, to which the spider attaches itself by means of the booklet of the 

 jaws, holding fast to the walls of the tube with its feet, in order to keep the 

 door close when an attempt is made to open it; this shuts down by its own 

 weight. See SAUVAGES Mem. de I'Acad. des Sc. de Paris, 1758, Hist. 

 p. 26, LATREILLE Memoires de la Soc. d'Hist. not. de Paris, &c., An. vii. 

 4to. pp. 118 128, PI. VI., AUDOUIN Ann. de la Soc. entom. n. 1833, PP 

 6985. PL 4. 



Oletera WALCK., Atypus LATE. 

 Eriodon LATR., Missulena WALCK. 



