2 PROCEEDINGS OP THE NATIONAL MUSEUM vol.72 



Syntj^pes have been deposited in the United States National 

 Museum, Washington, D. C. 



THYSANURA 



Genus LEPIDOCAMPA Oudemans 



The rare genus Lepidocain'pa is of special interest on account of 

 its resemblance to Campodea. It differs from Campodea chiefly in 

 having scales; also in the imperfect segmentation of the cerci, and 

 the presence of peculiar fringed pulvilli. In most respects, however, 

 the two genera agree anatomically, except as regards minute details 

 of structure. 



The genus was founded by Oudemans ('90) for L. weheri, a species 

 from the East Indies. The diagnosis of this species is, by the way, 

 inadequate, being almost entirely generic rather than specific. The 

 same species has been reported by Silvestri ('98, '99) from Argentina, 

 Paraguay, Brazil, and Ecuador ; but he finds that to decide whether 

 the species from South America is actually the same as that from 

 the East Indies will require a minute examination of material from 

 both regions. 



Silvestri ('16, '18) afterward recorded L. weberi from Ceylon, 

 Sumatra, British East Africa, and German East Africa. 



Carpenter ('16) described L. -fiTrbbriatipes from the Seychelles 

 Islands, properly preferring to hold the species as distinct, for the 

 present. His paper has been very useful in the writer's study of the 

 morj)hology of Lepidocampa. 



LEPIDOCAMPA ZETEKI, new species 



Plates 1-3, figs. 1-30 



White. Campodeiform (fig. 1). Body clothed with scales. 



Head. — The Y-shaped epicranial suture is conspicuous. Eyes ab- 

 sent. Antennae a little more than half as long as the head and body, 

 moniliform. The number of antennal segments found was as fol- 

 lows: One male, 27; four females, 22, 25, 27, 27, respectively; sex 

 unknown, 27, 30, 26. Segments mostly cup-shaped; first two seg- 

 ments short and broad (fig. 2) ; terminal segment (fig. 3) only one- 

 fifth or one-fourth longer than the penultimate segment, ovate or 

 oval. Segments 4-7, inclusive, each bear a dorsal pair of bothrio- 

 tiicha (fig. 2), Avhich are extremely long, delicate, fringed threads. 

 Segments 5 and 6 each bear, in addition, a ventral or ventro-lateral 

 bothriotrix. 



Mouth-parts. — The lahrutn (fig. 4) bears antero-entally a pair of 

 chitinous subtriangular toothed appendages (" unciform processes " 

 of Silvestri). 



The head of the mandible (figs. 5, 6) does not have the series of 

 parallel ridges forming a molar area as described by Carpenter, but 



