AttACHNIDA. 197 



E. ye f m int icrt (formerly Lv.c/n german.") Koch, from Germany, and E. greeca, 

 11. sp., from Greece. 



AGELENIDES. In this family, Koch (1. c. x, 5 Hft.) has figured : Uersilia 

 fiimlata, Sav., and Tegenaria atrica, new German sp., Philoica linotina, n. 

 sp., from Bavaria, Agelena Syriaca, KL, n. sp., from Syria, AIJ. Pennsylvanica, 

 n. sp. from Pennsylvania. 



Westring (Kroy. Naturh. Tidsskr. iv, p. 349) has observed that the male 

 of Asagena serratipes emits a chirping sound, similar to that afforded by the 

 Stag-beetle, Reduvii, &c. On closer examination, he found that the scutum 

 of the cephalo-thorax, minutely indented at the margin, is coriaceous and 

 finely wrinkled on the surface, and that it presents, at the base opposite the 

 articulation of the abdomen a smooth space, and that the root of the abdo- 

 men is surrounded \vith a notched border, by the friction of which against 

 the cephalo-thorax the sound is produced. 



MYGALIDES. Sauuders (Trans. Ent. Soc. of London, iii, p. 160, pi. 9) 

 observed in the Ionian Islands a new species, Mygale lonica, allied to 

 M. ccementaria ; it constructs its tubes in sandy soils, which tubes have 

 this peculiarity: (1) that the operculuni a projection over the hinge, 

 wlu'ch prevents the operculum rising beyond a right angle, and also allows 

 of its being elevated by slight pressure upon the projection; (2) that 

 the lower end of the tube also presents a similar but smaller operculum. In 

 a supplement (ib. p. 165) the author communicates his further researches, 

 instituted for the purpose of ascertaining the structure of the tube and the 

 mode of construction of the operculum. 



Westwood (ib. p. 170, pi. 10) has described a new north African Spider 

 of this family, Aetinopus (gdificatorius, with its operculated tube. 



DYSDERIDES, Koch, (Araclm. x, 5 Hft.) has figured, of this family, 

 Ariadne pallida, n. sp. from North America, Segestria Bavarica, u. sp. from 

 the environs of Ratisbou, and Di/sdera Homlergi (Aran. Homb., Scop., 

 Dt/sd. gracilis, Wid.), from the same locality. 



Two new Spiders of undetermined family have been instituted by Koch 

 (1. c.) from defective specimens. Poltys illepidus, from the East Indies, is 

 a remarkable form, with the cephalo-thorax attenuated anteriorly and almost 

 pointed ; on its anterior surface are placed four eyes in a square, and on the 

 back, on either side, two other eyes, one behind the other. The genus is 

 most nearly allied to Mithras, and the author is inclined to form from these 

 two genera a distinct small family, the MITHRAD^E. Gea spinipes, also, a 

 small East Indian Spider, has the eyes in two rows, the central eyes of the 

 posterior row being placed far back. 



SOLIFUG.E. 



PHRYNIDES. Phrynus, has received an addition by Koch (Araclm. x, 5 

 Hft.) of a species from Ceylon, Phr. Ceylonicvs, differing from the nearly 



