330 ACxRICULTlRAL EXPERIMENT STATION. 



hairs at the base of each tuft, the seventh segment having the 

 smah tufts only. The eighth segment has a large patch of 25 to 

 50 extremely small elongated scales with long apical and lateral 

 fringes (fig. 9). The anal siphon (fig. 7) is pale yellow, very 

 long and slender, and, though slightly variable, is usually half 

 as long as the larva from the base of the siphon to the head, in- 

 clusive. It is broadest at the base, slightly constricted centrally, 

 and with two series of weak spines, from 10 to 14 in each series, 

 extending one-third of its length from the base. These spines 

 have from 3 to 4 long teeth, the apical two or three often crowd- 

 ing toward tip. There are 6 to 8 fine tufts on the ventral side 

 between the terminating spine and the apex. The ninth segment 

 is at least one and one-half times as long as broad, with the 

 ventral brush composed of but 6 or 7 tufts of long hairs and a 

 few short hairs below the barred area. The dorsal double tufts 

 have one long hair each and several shorter ones. The anal gills 

 are about as long- as the ninth segment. 



Habits of the Bcirly Stages. 



This is one of the few mosquito larva that is really recogniza- 

 ble at a glance ; the large square head and the very long and very 

 slender anal siphon forming a combination that cannot be mis- 

 taken. This is, essentially, a clean water wriggler, though it 

 is occasionally found in stagnant water. Mr. Brakeley and Mr. 

 GrO'Ssbeck both report it from rain barrels, each once only. It 

 has occurred in my pails once only so far as our records go. 

 Mr. Brakeley has a pool wnth cattails where specimens can 

 usually be found until November, and I have taken it myself at 

 the extreme edge of one of the fish ponds at Lahaway. The 

 margin here was very shallow, the pine chats from the edge 

 extending under water tO' some distance, and here specimens 

 could be found in small numbers. Among the grass in a lily 

 pond, also inhabited by fish, examples are also to- be found at 

 almost all times. In fact the grassy edge of large ponds is a 

 favorite place for this species, which seems to escape fish better 

 than most other wrigglers. Another favorite breeding place is 

 in the quiet eddies or side pools of even rapid streams wliere it 

 is usually the only species found. It is frequent in springs and 

 is almost universal in swamp pools formed of spring water. It 

 gets down to the edges of the salt marsh at times and is found 

 in company with salinarius in the more permanent pools at the 

 edge of the highland. In fact, this is essentially an inhabitant 



