THE AMERICAN ENTOMOLOGIST. 



8i 



slender, spiniform, terminal joints. Labium with 

 a large rounded nientum, broader than long, 

 slightly narrowed behind, bearing long hairs, 

 labial palpi widely separated by the base of the 

 ligula, of two joints and a palpigerous piece 

 re-ienibling a third jvint Ligula very large, 

 prominent, elongate, with a square lobe in front, 

 nearly reaching the tips of the palpi. Thoracic 

 segments equal, larger than the abdominal seg- 

 ments, twice as wide as long, side margins pro- 

 duced, dorsal surfaces with two, and on the pro- 

 thora.K with several, rows of short blunt spines ; 

 sides of prothorax less strongly rounded than the 

 following segments ; each with a pair of moder- 

 ately long leg5, of two joints and a terminal claw- 

 joint representing the tarsus, tibia clothed with 

 spinules. Abdomen of nine strongly transverse 

 segments, each with a row of si.t blunt spines 

 above, which are replaced by sharp spinules on 

 the ventral surface, terminal segments bearing a 

 pair of moderately long appendages with one 

 short cylindrical basal joint, the remainder seti- 

 form, very obscurely multi-articulate. Anal pro- 

 longation stout, tubular, ending in four fleshy 

 lobes which arc usually retracted into the rectum. 

 Stigmata nine pairs, the first pair larger, situated 

 in the fold at the hind angles of prothorax, the 

 eight remaining pairs on the first eight abdominal 

 segments, at the middle of the edge of the dorsal 

 shield, and immediately below a short tubular 

 spine (the last spine of the dorsal row). 



The larva of Adclops presents the general char- 

 acters of Silphid larvx as given by Erichson, but 

 is most closely allied to those of Liodes and 

 Agathidium. From the larger Silphida; it diflfers 



[Fig. 20. 



Adeloi'S hirtus : a, pupa, underside ; /', do. from above ; 

 f, anal appendages (after Hnhbard). 



notably in possessing a movable labrum, not 



soldered to the clypeus. and from all described 



larvx of the family in having the palpigerous 



pieces of the lower lip (labium) widely separated, 



forming in fact a third joint of the palpi, and in 



[he size and prominence of the ligula. There are 



no long sensitive hairs upon any part. Of the 



larva of Catops its nearest ally, no description is 



known to me, except that of C. fusctis Gyll. by 



Erichson, which is too short to be of use. 



The pupa, (Fig. 20, a, ventral, /', dorsal view, 

 enlarged 10 times, c, anal appendages, much en- 

 larged) now first made known, is characterized 

 as follows : 



It is short, thick, almost conical, broadly 

 rounded anteriorly, suddenly tapering behind, 

 sparsely covered with fine hairs. Head bent 

 downwards upon the breast, not visible from 

 above, upper lip prominent, emarginate, tips of 

 palpi projecting, free, constricted at the joints. 



Antenna; bent upwards and backwards, lying 

 back of the knees in the concavity of the protho- 

 rax, and projecting beyond the dorsal surface at 

 its hind angles, constricted at the joints, the outer 

 half a heavy club, each articulation of which bears 

 large spiny tubercles. Prothorax very large, al- 

 most hemispherical, covering the body like a hood. 

 Wings folded over on to the ventral surface, lying 

 under the anterior legs, covering the thighs of 

 the last pair. Dorsal surface almost entirely ex- 

 posed, at the base of the wings three conical 

 protuberances placed close together, the largest 



[Fig. 21.] 



Cells of Adelops. 



on the median line covering the scutellum, the 

 two smaller on either side upon the elytra ; the 

 tip of the metathorax protuberant, acutely pro- 

 longed over the first abdominal segment. Ab- 

 domen strongly arched downwards terminating 

 in two thigh-shaped appendages with two or three 

 long hairs on the sides, and a curved bristle at 

 tlieir apices, between them at the base, a lobe 

 surmounted by two convergitvg tubular processes. 

 Color transparent white. Length 2.5"""=.io in., 

 width l.5"'"'=.o6 in. 



Aiiophlhalmtis sp. — Larva (Fig. 22, a, head, 

 much enlarged, b, underside of same.) No de- 

 tailed description of this larva has yet been pub- 

 lished. Packard's figure (/. c. x, pi. ii) suffi- 

 ciently well represents the form. 



General form long and very slender, cylindrical, 

 gradually narrower in front, more suddenly be- 

 hind. Color brilliant white, head and legshoney- 

 ycUow, with the mandibles darker, dorsal shields 

 of the thorax tinged with yellow, those of the ab- 

 domen colorless. Length of a somewhat distended 

 specimen 8"""=. 32 in. Head rather small, in- 

 clined upwards, nearly quadrate, slightly nar- 

 rowed behind, flattened above and below, sides 

 almost straight, posterior border sinuate above, 

 broadly emarginate below, with a few hairs, longer 

 on the sides. Head above with anterior border 

 projecting between the mandibles in an obtusely 

 tridentate clj-peus, with thickened, slightly re- 

 flexed margins, a shallow, arcuate impression 

 extending between the bases of the antennx, and 

 following the frontal margin, an oval depression 

 at the summit of the frontal elevation midway 

 between the antennx, Y-suture represented only 

 by the upper portions of its branches, which ex- 

 tend from the base of (he clypeal projection on 

 each side, backwards and inwards, half way to 

 the median line. Head licnealh with anterior 

 border slightly rounded, lobed by the projection 

 ofthementum. Eyes wanting. .'\ntcnn;i; placed 

 above, in slight emarginations at the anterior 

 anglcsof the head, projecting forwards, not longer 

 than the mandibles ; of four joints ; the first uni- 

 formly cylindrical ; the second shorter, enlarged 

 anteriorly, with a single bristle ; the third longer 



