Insecta Myriapoda found in Berwickshire. 491 



pointed out to us by Mr. J. E. Gray. In the Edinburgh En- 

 cyclopaedia the markings are described as forming " two light 

 red longitudinal lines" on the back. 



4. Polyde'smus Latreille. 

 1. P. complanatiis. "Reddish cinereous; last segment of the body mucro- 

 nated." — Latr., Gen. Crust, et Insect., i. 76. Leach, in Edin. Encyel., 

 vii. 408. ; Suppl. Encyel. Brit., i. 430. pi. 22. ; Zool. Misc., 3. 37. tab. 

 135.; Linn. Trans., 11. 381.; Sam. Ent. Comp., 1 15. Zulus complana- 

 tiis, Lin. Syst., 1065. ; Mull, Zool. Dan. Prod., 201. No. 2423. ; Turt., 

 Gmel., iii. 778. ; Lam., Anim. s. Vert., v. 36. tfcolopendra parva terres- 

 tris tardipes, juncturis bipedibus, Petiv., Gaz. Nat., 24. pi. 15. fig. 10. 



Hab. Under stones and the bark of decayed trees, and at the roots 

 of plants in gardens ; common. 



Body 8 or 9 lines long, 1 line broad, linear, the back flat- 

 tened, dusky yellowish-brown, the antennae, interstitial spaces, 

 and the feet paler: head small, smooth, with an impressed 

 line down the middle, hispid in front : antennas frontal, cla- 

 vate, hirsute, the tips of the joints pale, first and second 

 shorter than the third, which is longest, fourth and fifth 

 equal, obconical, the penultimate thick, the apical small, 

 ovate : eyes none : post-occipital segment transversely ellipti- 

 cal, the rest square, with raised sides, bossed with a large 

 tubercle, divided behind by an impressed line, the disk tessel- 

 lated with small tubercles arranged in three cross rows ; 

 interspaces smooth, depressed, rounded : ventral surface 

 rounded, pale yellowish brown : tail narrow, mucronate, with 

 a few hairs on the end : legs 31 pairs, hispid, with very short 

 hairs, 6-jointed, tapered, and armed with a small sharp claw. 

 The young are milk-white. 



Ord. II. Sy'ngnatha Latreille, Gen. Crust, and Insect., 



i. 73.* 

 5. Litho n bius Leach. 

 1. L. vulgaris. " Under lip very smooth, with lightly impressed obscure 

 dots on the anterior part ; feet testaceous, yellow." — Leach, Zool. Misc., 

 3. p. 40. L. laevilabrum Leach, in Edin. Encyel., vii. 409., and Trans. 

 Linn. Soc, 11. 382. 



Hab. Under stones and in moss ; common. 



From 10 to 14 lines in length, the breadth lj: head sub- 

 quadrangular, flat, broader than the following segments, 

 chestnut-brown, sometimes clouded with dusky, smooth, 

 marked with a curved impressed line extended between the 

 bosses of the antennae, the space anterior to it sparingly punc- 

 tate: eyes marginal, placed behind the antennae, black, 

 granular : antennae inserted on the front margin of the head, 



* In the Reg. Anim., iv. 335., this name is dropped, and that of Chilo'- 

 poda adopted. 



M M 2 



