90 JOURNAL OF THE [January, 



By Mr. Fasoldt's special apparatus and method of illumina- 

 tion, several persons have seen the lines of the band, said to be 

 ruled at the rate of 200,000 lines per inch. 



11. Lacinularia socialis, and Bacillaria paradoxa, living and 

 in full action : Exhibited by W. E. Damon. 



OBJECTS FROM THE SOCIETY'S CABINET. 



12. Scales of Lepisvia, sp. 



These scales belong probably to Lepisma sacc/iarina. Sugar- 

 runner, or L. domestica. Both species are sometimes very com- 

 mon about houses, where they eat holes in silks, mutilate the 

 edges of books, and consume sugar, &c. 



Lepisma saccharina, L., is uniformly dull silvery, with pale 

 yellowish antennae and feet. Head with fine scattered hairs ; 

 caudal stylets finely hairy with a few larger hairs. The longer 

 caudal stylets are about half as long as the body ; antennae 

 about two-thirds as long as the body. Length, .32 inch. 



Lepisma domestica, Pack., is pearly white ; body broad, cov- 

 ered densely with scales and mottled with dark spots, with silky 

 white hairs. A dense fringe of long hairs at base of head, ex- 

 tending around in front of the eyes, and grouped in two tufts ; 

 vertex bare. The three thoracic segments are mottled with 

 dark scales, the third being the darkest ; basal abdominal seg- 

 ments mottled like the thoracic ones, while a few dark scales are 

 scattered over the remaining segments, except the last one. On 

 each side of all the segments behind the head is a sub-dorsal 

 row of carneous tubercles, each supporting a pencil of 6-8 radi- 

 ating hairs ; a similar row of thicker tubercles on the side of the 

 body. Around edge of thoracic segments a fringe of hairs, 

 arising from short lines directed inwards, at right angles to the 

 edge of the segments, there being seven on the mesothoracic, 

 and three on the prothoracic ring ; on metathoracic ring six 

 lines on a side. Antennae and median caudal stylet nearly as 

 long as the body. Length, .50 inch. (Packard.) 



13. Longitudinal and transverse sections of Whalebone. 



Meeting of November 4th, 1887. 

 The President, the Rev. J. L. Zabriskie, in the chair. 

 Twenty-three persons present. 



In the absence of the Recording Secretary, Mr. G. E. Ashby, 

 was appointed Secretary pro tern. 



