42 PROCEEDINGS OF THE NATIONAL MUSEUM vol.86 



or three rows ; the body is "constricted caudad of head, most strongly 

 so over from about fourth to the ninth segments"; the first four 

 and the last three segments are smooth above; the pores are borne 

 "on the enlarged caudal portion of edge of the lateral carina," 

 contrary to the position in Camhala and Tridere^ which have the 

 anterior portion of the carina enlarged and bearing the pore. 



PAITEYA ERRANS Chamberlin 



Paiteya errans Chambekijn, Ann. Ent. Soc. Amer., vol. 3, p. 258, pi. 43, figs. 

 4-7, 1910. 



This species, which I have not seen, was described without definite 

 locality from southern California. It is 19 mm long, 1.4 mm wide, 

 and has 47-49 segments. 



Genus TITSONA Chamberlin 



Eyes well developed, five to seven ocelli in a single series. First 

 segment longer than the next three segments together, the sides 

 encircling the sides of the head but well removed, leaving an inter- 

 vening space into which the antennae may be folded back. Body 

 strongly constricted between segment 1 and segments 5 and 6. 

 First four segments and the last two segments smooth above, the 

 intervening segments with two low, rounded crests near the middle 

 of the dorsum, between the hemispherical pore swellings. In the 

 specific description it is stated that the crests begin on segment 4, 

 but this condition is not shown in the illustration. First male legs 

 reduced in size and 6-jointed, the last joint terminating in a strong 

 claw. 



The single species seems more closely related to Paiteya than to 

 other known genera. 



TITSONA SIMA Chamberlin 



Titsona sima Chamberlin, Ann. Ent. Soc. Amer., vol. 5, p. 161, pi. 10, figs. 

 4-6, 1912. 



Known only from the original collection of two specimens at 

 Oroville, Calif. The length is 16 mm; width, 1 mm; number of 

 segments, 42. 



Genus NANNOLENE Bellman 



Body small, slender, luhis-like; smooth above; anterior segments 

 definitely striate on the sides from the feet to near the pores, the 

 striae receding on the other segments. Segments, except the first 

 four and the anal segment, with a broad, deep transverse constric- 

 tion around the middle, giving the body a submoniliform appear- 

 ance, the constriction Avith a series of rounded pits at bottom. 



