S3 2 
The Ohio Naturalist. 
[Vol. IX, No. 8, 
bearing serrations which in ventral view appear as sub-annulations; 
mucrones with two hooks, a spur at base extending out almost opposite 
ante-apical hook, two long, barbed hairs arising from end of dentes, one 
extending to end of apical hook of mucrones, the other some distance 
beyond. Length .7—.9 mm. 
This small white form is very active, and found commonly 
about Columbus in the cavities of old rotten wood, and among 
the leaves and dirt. When feeding the head is barely visible 
under the projecting mesonotum. It is easily distinguished as 
a small white form, with the bead-like red eyes at the sides of 
the head, and the short third joint of the antennae. The eyes, 
however, soon lose their pigment in alcoholic specimens. 
This species is especially interesting as a Lepidocyrtus from 
the fact that it possibly represents the connecting link between 
Lepidocyrtus and the eyeless genus Cvphodeirus. Guthrie 
records one species with five ocelli instead of the typical eight to 
either eye patch (L. decemoculatus) and another (L. sexoculatus) 
with but three ocelli to either eye patch. L. sanguineus, as the 
two above named species, has every character of a Lepidocyrtus 
with the exception of the rudimentary condition of the eyes. 
When we consider the evidence of such reduction in the other 
genera, we cannot but feel there is just argument in including 
such forms with rudimentary eyes in this genus. Again when 
we consider the gradation in the degree to which the mesonotum 
projects over the head, and the difficulty in classifying the 
specimens on this character in some instances, it seems but a 
step to the genus Cvphodeirus in which the thorax projects but 
little, and possibly even should be united in one genus. 
Notes on Life History of Lepidocyrtus Sanguineus, n. sp. 
PI. XXX.—On May the twenty-fifth the larval forms of L. san¬ 
guineus were first observed. They w^ere found in colonies of eight 
or ten individuals in the channels of decayed wood made by 
wood boring larvae. Each colony probably represented the 
offspring of one parent. The resemblance to the adult forms 
was very striking, the apparent absence of eyes, and the larger 
size of the head in proportion to the body being the only appreci¬ 
able differences. In color the larvae are silvery-white to the 
naked eye, the same as the adult, with iridescent scales, and 
very active. The relative proportions of these larvae when first 
observed may be seen from the following measurements: 
Total length of insect... . 
LARVA. 
. 0.32 mm. 
ADULT. 
.9 mm. 
Width of bodv. 
. 0.09 mm. 
.30 mm 
Length of antennal segments I... 
. 0.02 mm. 
.045 mm 
II... 
. 0.03 mm. 
.065 mm 
III.. 
. 0.275 mm. 
.055 mm 
IV.. 
. 0.065 mm. 
.115 mm 
Total length of spring. . . 
. 0.17 mm. 
.5 mm 
Width of head. 
0.10 mm. 
.2 mm 
Length of head. 
. 0.0S mm. 
.16 mm 
