8 Sir John Lubbock on Pauropus, 



from above ; the pulmonary chamber has been turned to the left 

 and the generative organs to the right, a, foot ; i, pulmonary 

 vessels ; c, spire ; d, rectum ; e, kidney ; /, albuminiparous gland ; 

 g, anterior pedal artery ; h, multifid vesicles ; i, penis ; j, aorta 

 just where it perforates the peritoneal covering of the viscera 

 (the pericardium has not been laid open, so the heart is not seen); 

 k, branch to stomach and contents of spire ; /, branch to the side 

 of the body; m, branch to posterior portion of the foot ; n, branch 

 to salivary glands and crop ; o, branch to tentacles, penis, and 

 parts about the head; p, point where the aorta perforates the 

 infra-oesophageal mass and bends back to enter the foot (part of 

 the ganglion has been cut away) ; q, branch to generative ducts. 

 Fig. 2. The pulmonary chamber, heart, kidney, and venous sinus of the 

 same : a, heart; b, pulmonary vein; c, venous sinus; d, narrow 

 portion of pulmonary chamber between the rectum and kidney ; 

 e, kidney, which has been laid open ; its duct runs along the inner 

 surface of the rectum, and terminates close by the pulmonary 

 orifice; /, rectum. 



II. — On Pauropus, a New Type of Centipede. By Sir John 

 Lubbock, Bart._, V.P. Linn. Soc, Pres. Ent. Soc, V.P. Ethn. 

 Soc, F.R.S., &c.* 



The subject of the following communication is a small, white^ 

 bustling, intelligent, little creature, about -^ of an inch in 

 length, and may be characterized as follows : — 



Body composed of ten segments, including the head, convex, 

 with scattered hairs. Nine pairs of legs. Antennae 5 -jointed, 

 bifid at the extremity, and bearing three, long, jointed ap- 

 pendages. 



The author has met with this little Centipede in some num- 

 bers, among Thysanura, &c., in his kitchen-garden. He was at 

 first disposed to regard it as a larva ; but having, during the 

 last three months, had several hundred specimens under ex- 

 amination without finding any in a more advanced condition, 

 and having found spermatozoa in several, he thought there 

 could be no doubt that it is a mature form. 



The body is rather narrower in front. The head consists of 

 two segments; the third segment bears one pair of legs; 

 the fourth, fifth, sixth, and seventh two pairs each. Strictly 

 speaking, however, each of these segments is double. The pos- 

 terior legs are the longest. Each segment, from the third to 

 the seventh, has on the side a pair of strong bristles. There 

 are also several transverse rows of short club-shaped hairs. The 

 eyes are large and oval. The antennae are very remarkable, 

 and quite unlike those of any other Myriapods. They are 

 5-jointed and bifid" at the extremity. The first four segments 

 are short. The two branches constituting the fifth are longer and 

 * Abstract of a paper read before the Linnean Society, Dec. 6, 1866. 



