652 PROCEEDINGS OF THE NATIONAL MUSEUM. vor.o:? 



Body extremely slender, gradually tapering toward each end. 

 Head relatively smaU, narrower than the prothorax. Antennal 

 base absent in a few species. Postantennal organs each in a trans- 

 verse groove, a little behind the antennal base, with simple tubercles, 

 usually numerous. Sense organ of third antemial segment with 

 two or three papillae, or with papillae absent or represented by a 

 cuticular ridge; with two, three, or four guard setae; a pair of sense 

 rods; and two or tlii*ee sense clubs, smooth and straight or curving 

 toward one another; in addition there is usually an isolated ventro- 

 lateral sense club. Fourth antennal segment with curving sense 

 hairs, w^ith apical sense club and without subapical papilla. Tarsus 

 with one or two claws. Furcula absent. Anal spines 0-4, with 

 additional spine-like tubercles in a few species. Pseudocelli rarely 

 rudimentary. 



TULLBERGIA COLLIS Bacon. 



Plate 69, fig. 11; plate 78, fig. 95; plate 79, figs. 96-101. 

 Tullhergia collis Bacon, 1914. 



White. Slender (fig. 11); five to six times as long as broad. 

 Postantennal organs (fig. 95) large, oblong-eUiptical, each with 

 about 75 tubercles in four parallel rows Pseudocelli large, with 

 wide rings. Dorsal pseudocelli of head (fig. 11) as follows: Antennal 

 bases, 1 + 1; posterior border, 1 + 1. Antennae shorter than the 

 head. Sense organ of third antennal segment (fig. 96) with four 

 guard setae; four low blunt papillae, sometimes reduced to an 

 irregular ridge; two clavate curving sense rods; two smooth clavate 

 or subreniform sense clubs curving toward each other; and an 

 inner clavate accessory sense club. Curving sensory setae of fourth 

 antennal segment (fig. 97) as follows: Two outer, one dorsal, five 

 inner. One pair of dorsal pseudocelli on each segment of the body 

 except the anal segment. Unguis (fig. 98) stout, curving, untoothed. 

 Unguiculus reduced, spiniform. Anal spines (figs. 99, 100) two, 

 arcuate, as long as hind ungues, on large contiguous papillae. 

 Clothing (fig. 101) of sparse short stiff setae. Length, 1.5 mm. 



Tullhergia collis, the only known representative of its genus in 

 this country, was discovered in California, in the hills near Pomona 

 and Laguna Beach, and described by Miss Gertrude A. Bacon, who 

 kindly sent me cotypes which have enabled me to supplement the 

 original description. 



Genus TETRODONTOPHORA Reuter. 



Tetwdontophora Reuter, 1882. 

 Tetrodontophora Absolon, 1901c. 

 Tetrodontophora Borner, 1902a. 



Head and body stout. Antennal base present. Postantennal 

 organs absent. Sense organ of third antennal segment with seven 



