192 CALIFORNIA ACADEMY OF SCIENCES. 



drawing of such a specimen, since in most cases there 

 are only materials conserved to be had for examination. 

 On the anterior margin of the head four tufts of fine up- 

 right hairs can be observed. On the body the hairs are 

 more or less fallen off. In order to form an opinion of 

 their disposition you may with success resort to dissection 

 or boiling in caustic alkali. Then the ring-shaped eleva- 

 tions from which the hairs of the animal arise can be ob- 

 served on the bare cuticula. On the lower margin of the 

 thoracic tergits two rows of such elevations, directed ob- 

 liquely outwards and downwards, can be observed. Each 

 row consists of about ten elevations. Besides, there are 

 at the lateral margins of the segments ten similar rows 

 transversely disposed, each consisting of 3-4 elevations. 

 Each row is accompanied by a cuneate reddish brown 

 spot. On the lower margins of the abdominal segments 

 four rows of elevations obliquely disposed are to be found. 

 The inner ones seem to consist of 10-12 elevations, the 

 outer ones of 8—10. The terminal abdominal tergit is 

 furnished with long, fine hairs on both sides of the me- 

 dian cercus. 



The above species is richly represented in the Califor- 

 nian collection and seems to be very common. Perhaps 

 it is already described. However, as I have not been 

 able to identify it with any species before described, I 

 have considered it to be new to the science. 



Habitat. Sierra Laguna, San Jose del Cabo, Baja Cal- 

 ifornia; Tucson, Arizona; Guaymas and San Miguel de 

 Horcasitas, Sonora, Mexico. (Coll. G. Eisen.) 



Lepisma reticulata n. sp. 



The body is clang-ate, gradually tapering backwards. 

 The labial palpi arc j-jointcd. The maxillary palpi are 

 5- jointed. The ante nine arc indistinctly an nutated with 

 brown and white. The telson is short, indistinctly trian- 



