170 



Genus Apliorura MacGillivray 



These insects are small and white, without eyes, and with an 

 inferior claw. The postantennal organs are present and also 

 the pseudocelli. They are very abundant in soil and under 

 stones. 



Key to the Genus Aphorura 



A. Anal horns wanting-. sp. ? 



A A. A]ial horns two. 



B. Color yellow, each postantennal organ composed of 



nine tubercles. lutea 



BB. Color white. Each postantennal organ composed of 



eleven tubercles. montis 



Aphoriira sp. ? 



I have been unable to identify this species. 



Description: Color — White. Antennae — Shorter than head; 

 antennae sense bulbs present, five at the distal end of the third 

 segment, and two blunt curved hairs at the distal end of 

 segment IV. Eyes — Wanting. Postantennal organ — Present. 

 Pseudocelli — Present; two at the base of each antenna, two on 

 the anterior portion of the head, four on the posterior portion, 

 six on thorax II and III, four on abdomen I; six, abdomen II, 

 III, IV; ten, abdomen V; two, abdomen VI. Claws — Two, 

 unarmed; superior tapers quickly to a sharp point; inferior, 

 dilated at base, ending in a seta reaching to end of superior 

 claw. Anal horns — Absent. Integument — Finely granular, 

 hairs few, short and straight. 



Habifaf: In dirt underneath fern in San Antonio Canyon 

 above Ice House Canyon; altitude 5000 feet; few; December. 



Apliorura lutea Bacon 

 Aphorura lutea Bacon, 1913. P. C. jr. ent. and zool., vol. V, 



pp. 43-46. 



Description: It closely resembles Aphorura montis in gen- 

 eral appearance, length, size and shape of the body. It differs 

 though in color and the postantennal organ. Color — Yellow 

 Antennae — Shorter than head. Two rows of antennal organs on 



