82 



THE AMERICAN ENTOMOLOGIST. 



than the first, deformed, the basal half a thickened 

 palm, bearing a small, oval, porrect lobe, and 

 minute papillx, the remainder of the joint a 

 curved, cylindrical continuation joining the palm 

 on the inside, two bristles on the palm and one 

 on the finger ; fourth joint appendiculate, bearing 

 several long lateral and one minute terminal 

 bristles. Mandibles moderately long and thick, 

 arcuate, with a short tooth near the middle. 

 Maxillx consisting of a very short cardinal piece, 

 a stout cylindrical basal piece, longer than the 

 mandibles, with two long, and several short ex- 

 ternal bristles, above with a row of sibi or seven 

 spinulcs near the inner margin, and two internal 

 bristles near the apex, surmounted by a two- 

 jointed internal lobe, the basal joint thicker and 

 shorter than the terminal, and a four-jointed pal- 

 pus; the first and second joints thick, the first 

 very short ; the second much longer ; third and 

 IFig. 21. 



Anoi'HTHALMUS sp. a, head, much enlarged ; b, underside 

 of same (after Hubbard). 



fourth joints together equal to the first two com- 

 bined, more slender, terminal joint longest. Men- 

 turn elongate, convex, separated from the under 

 surface of the head only by shallow longitudinal, 

 parallel impressions, projecting slightly beyond 

 the anterior border as a rounded lobe, sur- 

 mounted b)' a convex palpiger, not broader than 

 long, somewhat obcordate, the anterior cmargin- 

 alion deeper when seen from above. Labial palpi 

 of two joints, equal in length, the first thick the 

 last slender. Ligula invisible from below, dis- 

 tinguishable from above as a minute papilla placed 

 at the bottom of the emargination between the 

 palpi, and bearing two hairs. Thoracic segments 

 narrower than the abdominal segments, moder- 

 ately convex above, flattened beneath ; the pro- 

 thorax oval, longer than broad, sides gently 

 curved, anterior border sinuate, produced at 

 middle ; meso-and metathorax broader than long, 

 more strongly rounded on the sides, widest be- 



hind the middle ; dorsal shields elliptical, fringed 

 with short brown hairs, prothoracic shield larger 

 than the following. Legs moderately long, sub- 

 equal and similar, sparsely clothed with hairs, 

 of five joints and a claw ; coxaj widely separate, 

 conical, stouter and longer than the other joints ; 

 trochanter, femur, and tibia exactly equal ; tarsal 

 joint rather longer, more slender, tapering; tarsal 

 claw .shorter, curved, pointed. Abdominal seg- 

 ments nine in number, convex above and below, 

 strongly rounded on the sides ; dorsal shields 

 transverse, elliptical, indicated by fringing, short, 

 brown hairs ; on the side of each segment a promi- 

 nence bearing a few hairs ; segments i to 4 in- 

 sensibly increasing in size ; then decreasing to 

 the 7th, which equals the ist ; 8th sensibly smal- 

 ler ; gth much smaller, conical, ending in a pair 

 of rather stout appendages, not exceeding the 

 segment in length, curving inwards, bearing 

 bristles, and a cylindrical anal proleg, when dis- 

 tended showing two diverging lobes, equal to the 

 appendages in length. Stigmata normal, one 

 larger pair on the prothorax, placed posteriorly 

 a little below the middle of the side, the following 

 on segments i to 8 of the abdomen, above and 

 a little in advance of the lateral hair-bearing prom- 

 inence, exceedingly minute, and from their want 

 of color barely visible. The hairs of the body 

 are few in number and very short, those of the 

 head are no longer than are seen on most car- 

 abid larvaj, and bear no comparison to the long 

 sensitive hairs found upon all parts of the imago. 



A single specimen in alcohol, found on wet 

 sand near Hebe's Spring, Mammoth Cave, six 

 miles from the entrance. The species may be 

 either A. Tellkampfii or A. Menetiicsii. Except 

 in its ver)' elongate form I can find no striking 

 differences between this and other Carabid larvx 

 allied to Trechus. 



Phora sp. — (Fig. 23 a, larva enlarged 10 times, 

 profile ; b, front view of head and thorax ; c, anal 

 propleg from above ; i; and b much enlarged.) 

 The larva of the smaller cave fly is cylindrical, 

 tSE IFig. 23.] 



Larva of Phor.\ : «, side view ; /', head and thorax from 

 front ; £", anal joints from above (after Hubbard). 



narrowed in front, more suddenly narrowed be- 

 hind. Head small, rounded, convex, deeply 

 inserted in the thorax ; above on each side an 

 acute, three-jointed tubercle ; in front a second 

 pair of very minute tubercles, separated by a sut- . 

 ural line, which branches below them ; space be- 

 tween the branches of the Y-suture excise3, en- 

 closing the buccal opening, which appears as a 

 dark transverse slit. Three thoracic segments 

 smaller than the abdominal segments, retractile, 

 bearing at or near the anterior border a row of 

 acute tubercles or spines ; the prothoracic with a 

 pair of tubular spines arising from depressions 

 at the middle of each side. Abdomen of nine 

 segments, each with three folds on the dprs?l 



