336 AGRICULTURAL EXPERLAIEXT STATION. 



of two hairs each ; except the first two segments which have four 

 or five hairs to the tuft. The eighth segment has short tufts 

 only and bears the lateral combs. These consist of twelve scales 

 each, arranged in an irregular single row. The scales are elong- 

 ated, with short, fine, lateral hairs on the apical two thirds (fig. 

 105, 8). The anal siphon is four times as long as broad, yellow 

 or pale brown in color, tapering slightly on the apical half. The 

 double row of spines has from twelve to sixteen spines in each, 

 the apical two separated from the rest and from each other; the 

 individual spines (fig. 105, 9) slender, each with one large tooth 

 and often one to four very small ones below it. The ninth seg- 

 ment is considerably longer than broad, with the dorsal plate 

 extending lower than the middle; the double dorsal tuft and 

 ventral brush normal, the latter with several small tufts below 

 the barred area. The anal gills are slender, longer than the ninth 

 segment. 



Habits of the Early Stages. 



There is every reason to believe that this species winters in 

 the egg stage; first, because it has been found very early in the 

 larval stage, in company with species of which it is known that 

 they winter in that way and, second, because the larva has been 

 found in pools dry during the winter and only filled by the spring 

 rains. The earliest dates are from Mr. Brakeley, who collected 

 a miscellaneous lot of larv?e April 7th, from which adults of this 

 species were obtained April 13th. It may be in place here to say 

 that these larvae are so much like others that are found in the 

 same pools early in spring that unless attention is especially di- 

 rected to them they readily escape recognition. The next date, 

 April 1 8th, is also from Lahaway, where the larvae were taken 

 in company with those of C. aurifer. The first pupa formed 

 April 19th, giving adult on the 24th; the second formed on the 

 20th, giving adult on the 25th; a five day period in each case. 

 The fact that this species is not a larval hibernate was definitely 

 settled when, on April T5th, nearly mature larvae were found by 

 Mr. Brakeley in a pool that had been completely dry during the 

 winter. 



April 24th, Mr. Grossbeck found pupae from which this species 

 emerged, at Mountain View, and May 2nd, Mr. Brehme found 

 the same stage at Arlington. Larvae, pupae and adults were 

 found at Metuchen, May 7th, by Mr. Grossbeck, who took quite 

 a number of the early stages during the two or three succeeding 

 days as well. May loth. pupae were taken in the Great Peace 

 Meadows from which adults emerged on the nth and at the 



