Pelops 



7 



black but are secreted matter not present when the creature emerges. Cephth. 

 bulbous posteriorly. Rost. pointed. Rost. hair fine. No true Lam. or Trlam. 

 Psstg. hidden by ant. margin of Abd. Psstg. org. moderate length, 

 gradually clavate, slightly recurred. Int. lam. hair very large, light, 

 spatulate, horizontal, directed forward passing Rost. Tectp. 1 with free 

 points. Ptm. short, rough, like Dors, of Abd. Ant. margin of Abd. has 

 a square projection with undulating margin of 3 lobes. Dors, of Abd. has 

 elliptical depressed, slightly convex space smooth and light. 4 rows of 

 spatulate hairs on dors, of Abd. and a row of similar hairs round post, 

 margin. Genital covers larger than anal. — Nph. Red-brown, or yeflow- 

 brown. Cephth. yellow, hairs white. Pyriform, Rost. narrow. Cephth. divided 

 into spaces by regular raised ridges. Psstg. org. almost globular on short 

 peduncles. Intlam. hair thick, slightly spatulate. Abd. has lateral portions 

 raised, central area slightly convex; covered by irregular wavy soft ridges 

 running backward and inward on lateral, and transversly on central area ; a 

 row of large, curved, spatulate hairs round margin. — Lv. like Nph., but 

 has only 2 pairs of the marginal hairs. — Im. L. ca. 650 \i. 



On Oak and white thorn trees and among; fir needles and elsewhere. Algeria, 

 England, France. Germany, Italy. Netherlands. Switzerland. 



2. P. auritus C.L.Koch 1840 P. a., C.L.Koch. 0. M. A., fasc. 30 1. 11. 



Tim. Blackish-brown. Intlam. hair awl-shaped. Psstg. org. fusiform. 

 A square projection from ant. margin of Abd. 2 thick clavate hairs 

 on post, margin directed straight backward. No others on Abd. Abd. 

 as broad as long. L. „rnittelgross kl . 



In moss on trees. Germany. 



3. P. farinosus Xic. 1855 P.f, Nicolet in: Arch. Mas. Paris, v. 7 p. 425 t. 3 

 f. 2 1884 P.f., Michael, Brit. Orib., v. 1 p. 212 t. 1 f. 13. 



Very like P. acromius, but smaller and with Psstg. org. falciform in- 

 stead of clavate. secreted ridges often remain white instead of turning black. 

 — Im. L. ca. 550 |u. 



England. France. Probably same distribution as P. acromius. 



4. P. fuligineus C. L. Koch*) 1835 Celaeuo plicata, C.L.Koch. C. M. A., fasc. 3 

 t. 18 (Xph. !) 1840 Pelops acromios (non Notaspis acromios Hermann 1804!). C.L.Koch, 

 CM. A., fasc. 30 t. 9 | 1844 Oribataa., Gervais in: Walekenaer. Ins. Apt., v. 3 p. 258 | 

 1840 Pelops fuligineus, C.L.Koch, C. M. A., fasc. 30 1. 10 ' ?1844 Pelops Mr sutus, 0. 

 L.Koch, CM. A., fasc. 38 t. 15 1855 P. laevigatus, Xicolet in: Arch. Mus. Paris, p. 7 

 p. 426 t. 3 f. 3 | 1884 P. I., Michael, Brit. Orib.. t: 1 p. 213 t. 2 f. 1—7 j ?1882 P. 

 sculptus, Haupt in: Ber. Ges. Bamberg, v. 12 p. 29. 



Im. Black, dull, smooth but not polished ; shortly after emerging Dors, 

 of Abd. becomes coated with white secretion which splits irregularly all over 

 and sometimes rubs off. Rost. sharp. Intlam. hair as in P. acromius. 

 Psstg. org. like Intlam. hair in form but smaller. Abd. almost circular, 



*) According to the synonyma enumerated above by the author and in 

 accordance with the „B,egeln far die wissenschaftl. Benennung der Thiere" (§ 2a : ,,Xamen. 

 welche nur auf einem unentwickelten Zustand .... basieren. sind zulassig, falls die 

 Kennzeichnung zur Wiedererkennung der betrefi'enden systematischen Einheit ausreieht." | 

 the name of this species is P. plicatus (C.L.Koch). The Editors. 



I am not able to agree in this opinion. As the immature forms of the Ori- 

 batidae are usually wholly unlike the Imagines I do not think that specific names founded 

 upon them are permissible under the rules referred to, and they are expressly forbidden 

 by the rules of nomenclature of the zoological congress at Moscow'. The Author. 



