THE GENERAL SUBJECT. 
Myr. 5 
Like Scoterpes ; setae a little shorter ; 
sixth pair of male legs greatly 
swollen Zygonophus, Ryder. 
Descriptions and synonymy of 8 species native to America are given. 
Cambala annulata , Cope, is described. 
24. [Packard, A. S.]. On the Morphology of the Myriopoda. P. Am. Phil. 
Soc. xxi. pp. 197-209 (figs.); abstract in J. R. Micr. Soc. (2) iii. p. 833. 
Embryology and morphology prove that the Chilognatha are the repre- 
sentatives of tho primary form of the Myriopods, the Chilopoda being 
a less primitve group. Two pairs of head appendages found in the 
latter have no representative in the former, Packard proposes to call 
them Malipedes. Ho gives the following table showing the relations of 
the head parts in three sub-classes of tracheate Arthropods : — 
1st Arthromere 
Hexapoda. 
Antennae 
A rachnida. 
Wanting 
Chilopoda. 
Antennae 
Chilognatha. 
Antennae 
(pre-oral) 
2nd Arthromere 
Mandibles 
Chelicerae 
Protomalae 
Protomalae 
(post-oral) 
3rd Arthromere 
1st Maxillae 
Pedipalpi 
Deutomalae 
Deutomalae 
4th „ 
2nd „ 
1st pair of 
1st Mali- 
1st pair of 
5 th „ 
2nd „ 
Baenopoda 
2nd pair of 
pedes 
2nd Mali- 
Pedes 
2nd pair of 
6th „ 
1st pair of 
Baenopoda 
3rd pair of 
pedes 
1st pair of 
Pedes 
3rd pair of „ 
Baenopoda 
Baenopoda 
Pedes 
Pedes 
The Myriopod must have branched off from the tracheate stem by an 
ancestor much more primitive than Scolopendrella , which form Packard 
considers to be really a Hexapod allied to, but earlier than, Ccimpodea. 
Pauropus , he thinks, should be looked on as a suborder of the Chilognatha , 
Eurypauropus connecting Pauropus with Polyxenus. Scudder’s fossil 
Palceocampa , Packard thinks, is not a Myriopod, but a larval form of an 
insect allied to Panorpidce. 
25. Schleciitendal, D. H. R. von. Ueber das Nestbauen von Poly - 
desmus complanatus, Deg. Z. Naturw. (4) ii. pp. 223-225. 
Tho female Polydesinus complanatus covers eggs with damp earth and 
moss in the form of a little ball. 
26. Scudder, S. H. Remarks on Scolopendrella and Polyxenus. P. Bost. 
Soc. xxii. pp. 64-67. 
Describes a Scolopendrella found near Boston, proposing the name of 
S. latipes for it from the character of its feet. Also describes Polyxenus 
fascicularis , Say, particularly noticing the tegumentary appendages. 
27. . Dermal Appendages of Polyxenus. P. Bost. Soc. xxii. p. 67; 
abstract in J. R. Micr. Soc. (2) iii. p. 501. 
A minute description of the different forms of hairs of P . fascicularis, 
Ray. 
Sedgwick, A. [See Balfour (2) and Kennel (13)]. 
