Genus Cycloleppteron. 59 
In another letter Dr. Grabham refers to the larvae as having 
“a continuous brilliant white band along the median dorsal line 
extending from the respiratory stigmata forward on to the 
thorax ; this character renders them most conspicuous when 
examined by reflected light on the surface of the water.” In 
another letter he states this white line ends in a fork-shaped 
mark on the thorax. But in his last letter he says that “ the 
continuous silvery streak on the upper surface, which I formerly 





: 
thought was a constant feature, was only observed in two of the 
fourteen specimens.” 
The larvae have six pairs of palmate hairs, each with 
twenty lanceolate lamellae, four smaller than the others 
(fig. 35). 
The frontal hairs are simple (fig. 36, b), and on the front of the 
thorax are five plumose hairs (c). The antennae (a) have a series 
of teeth along one side and terminate in one large and two small 
spines and two bristles. 

X 
| 
cA 
Fig. 36. 
Cycloleppteron Grabhamii. 'Theobald. 
a, Antenna of larva ; b, frontal hairs ; c, frontal thoracic hairs. 
