214 GEO. n. HORN, M. D. 



N. Uydropliiloides Mann. — Oval, slightly oblong, a little narrowed in 

 front, piceous or nearly black, margins paler, surface shining. Head sparsely 

 punctulate. Thorax transverse, twice as wide as long, narrowed in front, widest 

 a little in front of base, sides arcuate, margin broadly explanate, translucent, 

 apex moderately emarginate, the angles very obtuse, base feebly bisinuate, 

 angles rounded, disc convex sparsely punctate, margin a little more coarsely. 

 Elytra oval, broadest at middle, not wider at base than the thorax, base oblique 

 on each side, humeri obtuse, margin moderately wide, surface moderately deeply 

 striate, striae rather finely crenately punctured, intervals convex smooth. Body 

 beneath and abdomen nearly smooth. Femora with very few punctures. Body 

 winged. Length .36— .44 inch; 9—11 mm. (PI. V, fig. 5). 



The males have the first three joints of the anterior and middle 

 tarsi broadly dilated, the fourth joint less so. This species is more 

 elongate than the preceding and has the elytral margin less developed. 



Occurs from Alaska southward through California. 



PELATES n. g. 



Head broadly oval, yery slightly narrowed behind the eyes, the latter 

 round, moderately prominent. Labrum short, transverse, feebly emarginate. 

 Maxillary palpi moderate in length, first joint very short, second slender, 

 cylindrical, third shorter obconical, fourth longer than the second, cylindrical, 

 acute at tip. Antennae a little longer than the head and thorax, gradually 

 clavate, inserted under a distinct frontal margin, first joint stouter cylindrical, 

 suddenly narrowed at base, joints 2—7 obconical, the third a little longer, 

 8 — 11 a little broader, the last elongate oval, pointed at tip. Anterior coxal 

 cavities partly closed behind by a slender i)rolongation of the epimera. Middle 

 coxse very narrowly separated. Posterior coxae contiguous. Legs rather short, 

 the tibiae scarcely at all spinulose externally. Tarsi slender. Elytra rather 

 widely margined, the epipleurae wide. Form broadly oval, subdepressed as in 

 Pellis, body winged. 



This genus, for which I have adopted an unpublished name of 

 Fischer, is closely allied to Necrophilus but differs especially in the 

 characters given in the table, and also by the anterior tarsi alone of 

 the male feebly dilated. 



P. latus Mann. {Necrophilus). — Broadly oval, about one-half longer than 

 wide, feebly convex, piceous or castaneous, margins paler, surface glabrous, 

 shining. Head sf)arsely irregularly punctate. Thorax twice as wide as long, 

 narrower in front, sides moderately arcuate from base to apex, margin moder- 

 ately explanate, apical angles rounded, hind angles obtuse, apex emarginate, 

 base truncate. Elytra as wide at base as the thorax, sides feebly arcuate, 

 margin moderately explanate and slightly reflexed, surface striate, striae 

 moderately coarsely punctured, intervals flat, smooth. Body beneath coarsely 

 but sparsely punctate, femora punctate. Length .14 — .16 inch; 3.5 — 4 mm. 

 (PI. V, fig. 6). 



This insect resembles somewhat in form Peltis ferruf/mea, but is 

 much smaller and a little more convex. 



Occurs irom Alaska to Washington Territory. 



