THE MYRIAPODA OF NORTH AMERICA. 11 



other papers, "Genera et species Lithobioidaruin " and " Lithobioidae 

 American Borealis," were published by the same author from Stockholm 

 the same year. These papers are valuable from their full synonomy 

 and notes on distribution. A translation of the latter paper was pub- 

 lished in vol. vii of the Proceedings of the California Academy of 

 Sciences. In 1877 Brachycybe rosea, from California, was described by 

 Andrew Murray in his volume on "Economic Entomology." The 

 discovery of a second species of Pauropoda in America was announced 

 in 1878, by Dr. John A. Ryder, and in 1879 a third, forming the new 

 genus Eurypauropus; the same author also published (1881) a list of 

 the Lysiopetalida?, adding a new genus and species, Zygonopus ichitei. 

 In 1880 Dr. Karsch, of Berlin, published three papers on the various 

 families of Diplopoda, in which six new species from the United States 

 are described. Kohlrausch, in 1881, published his " Gattungen und 

 Arten der Scolopendriden," in which all the known species of this fam- 

 ily are described. Two American species of Scolopendra were described, 

 which had been briefly characterized in a preliminary paper published 

 in 1878. 



Three papers were published by Dr. Packard in 1883 ; the first was 

 a description of Polydesmus ocellatus (afterwards referred to Craspedo- 

 soma by Stuxberg) ; the second was a revision of the Lysiopetalidse, 

 giving a summary of the known information to date and describing 

 the new genus Cryptotrichus; the third was a morphological paper on 

 the appendages and mouth parts of the Myriapoda. 



In 1884 Dr. Latzel published a valuable monograph of the Myriapoda 

 of Austro-Hungary in which a few notes are given on the American 

 species of the so-called Lysiopetalidae, most of which he referred to the 

 Chordeuniidre ; the work contains synopses of all the genera of Myria- 

 poda and a very complete bibliography of the subject, containing 611 

 titles. Dr. Meinert, of Copenhagen, published in 1884 an account of 

 the Chilopoda of the Museum of Comparative Zoology, describing 

 fifteen new species from the United States; and the year following 

 appeared the third part of his " Myriapoda Musaei Hauniensis," in 

 which two species of Lithobius were added to our fauna. 



In November, 1885, L. M. Underwood published a review of the 

 principal literature on the American species, with synoptic tables of 

 genera and a summary of the group as known to him; at that time, 

 however, some minor papers were overlooked, so that the summary 

 given should be somewhat increased. Twenty-seven genera with one 

 hundred and twenty-nine species were recorded.* A subsequent paper 



*The geographic distribution of the species as described up to that time is pecu- 

 liar. The State having the largest number was California, with 27 ; then followed 

 Pennsylvania, 25; Illinois, 16; Georgia, 13; Oregon, 12; Virginia, 10; Texas, 8; 

 New York, 7; and Florida, 7; all others falling below 5; 15 had no described 

 species. The report of Indiana with only two species may have incited Mr. Boll- 

 man to his study of local forms, which commenced soon after. 



