650 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 53. 



I sent specimens from Massachusetts to Dr. Caesar SchaflFer, who 

 informed me that they were Lipura inermis Tullberg, the equivalent 

 of L. jimetaria Linnaeus, Lubbock; and I was able to verify his opin- 

 ion by an examination of many European specimens wliich he sent 

 to me. 



In Swedish specimens Agren ('03) found 3 + 3 pseudocelU on the 

 posterior border of the head and found the unguiculus to exceed the 

 unguis in length. The same author ('04) gives the number of lateral 

 pseudocelli of each thoracic segment as 1 + 1 ; I find, however, 2 + 2 

 and record also several lateral and ventral pseudocelli not as yet 

 mentioned by European writers. 



Packard's ('73) Lipura Jimetaria (Linnaeus), which I examined in 

 the Museum of Comparative Zoology, is this species — the Jimetaria of 

 Linnaeus as redescribed by Lubbock. 



The form with eight or nine tubercles in each postantennal organ, 

 found in Europe and North America, varies into forms with a larger 

 number of tubercles, as Carpenter and Evans ('99) have noted. 

 The species from Japan that I referred to ApJiorura inermis Tullberg 

 (Folsom, '99) was named A. Jolsomi by Schaffer ('00a, p. 249), and 

 dijffers from inermis in the structure of the antennal sense organ, 

 as I have recently foimd (see Borner, '09, p. 104), 



The fonn referred to inermis Tullberg by Guthrie ('03) is not 

 that species' but is the form described beyond as pseudojimetarius, 

 as I have found by an examination of some of Guthrie's specimens. 



The Californian specimens that I have seen, collected by Miss 

 Gertrude A. Bacon, agree with European examples. 



Tliis species is common in humus, under dead leaves, decaying 

 logs, or loose dead bark, in moss, in flower pots in dwelling houses, 

 and in greenhouses. In Europe it has been found also in caves and 

 occasionally on the seashore. 



Onychiurus Jlmetarius is common throughout Europe, is widely 

 distributed in North America, and has been reported from Africa 

 and Sumatra. 



Massachusetts: Belmont, March 27; Cambridge (m a greenhouse), 

 February 2, 7, March 1, July 17; Salem, A. S. Packard (M. C. Z). 



Pemisylvania: Hazleton, W. G. Dietz. 



Florida: E. Lonnberg (see MacGilUvray, '94). 



California: G. Eisen (Cal. Acad. Sc); Santa Barbara, February 28, 

 Gertrude A. Bacon. 



ONYCHIURUS PSEUDOFIMETARIUS. new species. 



Plate 69, fig. 10; plate 78, figs. 89-94. 

 Aphorura inermis Guthrie, 1903. 



White. Body slender; abdomen rounded posteriorly (fig. 10). 

 Postantennal organs (fig. 89) elongate, each with about 16 branched 



