1983] 
Chandler — Wrack Coleoptera 
289 
Figure I. Orthoperus scutellaris LeConte, dorsal view of larva; line equals 0.1 
of members of the genus, but differs in many of the fine details. 
Considering the age of the description, no attempt is made here to 
contrast it with the description of O. scutellaris. 
Monotoma producta LeConte 
(Figs. 3, 5, 6) 
Adults were identified by using the key of Horn (1879), and com- 
paring specimens with the LeConte type. Last instar larva: length 
4.0-4.5 mm. Body elongate, flattened dorso-ventrally, whitish, all 
setae aciculate. Head with patches of darkly sclerotized tubercles, 
labrum distinct, single stemma on each side, frontal arms of epicran- 
ial suture lyriform, epicranial stem absent; antennae three-segment- 
ed, sensorium two-thirds length of third segment; maxillary base 
divided into three sclerites, palps three-segmented, mala bluntly 
