278 ENTOMOLOGICAL NEWS. [June, ’o8 
the largest. Each of the abdominal and thoracic annuli are well 
armed with short, closely set spike-like hairs, which are more 
or less arranged in girdles, due to the annular divisions. Be- 
sides these short hairs there are two or four longer curved hairs 
on the dorsal surface of the posterior annulus of each segment, 
likewise one or two along the sides of the same annuli, and two 
pairs of similar hairs on their ventral surface. The paired 
ventral hairs on the thoracic segments are mounted upon small, 
widely separated, circular plates, similar to the dorsal plates on 
the posterior annuli except much smaller. 
In living specimens the internal organs in the region of the 
fourth and fifth abdominal segment show creamy-white through 
the body wall. This did not appear in the Florida larve and is 
also obsolete in alcoholic specimens. No signs of anal tracheal 
gills are present. The thoracic air nipples are present on the 
dorso-lateral portion of the second prothoracic annulus. As in 
the case of the Florida specimens, these were not seen to be used 
by the larve for breathing. 
The larve have the greedy habit of engulfing everything 
that they can get hold of. The alimentary canal is continually 
distended with food. The internal organs appear very dis- 
tinctly through the body-wall, especially in case of specimens 
preserved in alcohol. The protrusions surrounding the anal 
opening are much more pronounced than in the Florida speci- 
mens. A test was made to determine the length of time they 
could live under water without coming to the top to breathe 
and the limit was found to be about twenty-four hours, as in 
the case of the Florida larve. 
PUPA. 
The pupz are found hidden in the debris at the surface of 
the water, where they are continually kept moist and where 
they can protrude their thoracic breathing tubes out above the 
surface. The pupz are somewhat larger than those from Flor- 
ida and the abdominal spines are slightly less developed. There 
is a very marked difference in the size of the male and female 
pup. The latter are both longer and more heavily built. In- 
