892 



PSYCHE. 



[June 1S96. 



buff sti'ipe; hend paler; antennae, legs and 

 fmxula white. Head horizontal (fig. 5), 

 in lateral view ovate, half as long as body, 

 smooth, anteriorly with short setae. Eyes 

 absent. Antennae (fig. 7) shorter than the 

 width of the head, not geniculate, slender, 

 segments four, their relative lengths as 

 1:3: 4:5; basal segment globose, naked; 

 second subcylindrical, sparsely hairy apically ; 

 third cylindrical, subpetiolate, more hairy; 

 terminal segment long-conical, with hairs 

 curving towards the notched apex. Labrum 

 and labium projecting, with stout setae. 

 Mandibles with long, falcate-oblong apex 

 (fig. i); terminal tooth long, sinuate within; 

 lower incisive teeth small, three and four, 

 compressed; below the base of the apex is a 

 prominent rounded lobe directed forward; 

 molar surface little convex, minutely denti- 

 culate, bounded on one side b}' a longitudinal 

 row of four or three large, blunt teeth, re- 

 spectively dorsal and ventral on the right and 

 left mandibles ; molar surface with a slight 

 posterior lobe. Maxillae (fig. 3) with a con- 

 spicuous, dorso-external, curved, acuminate 

 claw; ventral and internal to this, a wavy, 

 linear process bearing on distal half an ex- 

 ternal comb of long teeth; remainder of 

 maxilla composed of two large, oblong, con- 

 caved appendages, each with four or five ribs 

 terminating in as many teeth on the anterior 

 truncated margin. Body (fig. 5) seen from 

 above oval, smooth; in profile with high- 

 arched dorsal outline ; smooth excepting a few 

 bristles on the inconspicuous anal tubercle. 

 Prothorax compressed, broadly articulated 

 with the head. Ventral surface white, much 

 swollen before the manubrium. Ventral tube 

 (figs. 5 and 6) equal to dentes in length, 

 cylindrical, crenate anteriorly, one-lobed pos- 

 teriorly near base, ending in two semi-globose 

 papillate tubercles. Legs slender, about as 

 long as furcula, scarcely bristly except on 

 tibia. Superior claw (fig. 2) as long as third 

 antennal segment, slender, internally sinuate 

 with one sharp tooth one-third from apex; a 

 Jinear pseudonychium, as long as the inferior 



claw, arises from either side the base of the 

 external margin of superior claw (fig. S). 

 Inferiorclaw less than half the other in length, 

 uniformly tapering, scarcely curving with the 

 superior claw, smooth, not toothed; ten- 

 ent hairs absent. Furcula short, scarcely 

 reaching mesothorax ; segments ventrally as 

 I : 1.5 : i; manubrium stout, swollen, with a 

 few ventral hairs and sinuate distal articula- 

 tion ; dentes laterally a little tapering, dis- 

 tally (fig. 9) with five large, lateral teeth at 

 intervals, three being external, and two in- 

 ternal, also a long subapical ventral bristle 

 and an evident, blunt-conical, apical lobe on 

 either side the base of the niucro ; mucrones 

 laterally narrowly lanceolate (fig. 4), deeply 

 concave ventrally with each edge distinctly 

 serrate and with simple apex. 



Maximum length, 0.7mm. Described from 

 over fifty types, twenty-five of which have 

 been given to the Museum of Comparative 

 Zoology at Cambridge, Mass. 



EXPLANATION OF PL.VTE S. 

 Neelus inuyinns, n. sp. 



Fig. I. Extremity of right mandilile, from 

 above, X 530. 



Fig. 2. Tarsus and claws of one foot. 



X 530- 



Fig. 3. Extremity of right maxilla, from 

 above, x 530. 



Fig. 4. Side view of mucro and end of 

 dens, X 440, 



Fig. 5. Left side of insect, ventral tube 

 turned backward, x 72. 



Fig. 6. Ventral tube, x Ii5. 



Fig. 7. Antenna, x 440. 



Fig. S. Outside of superior claw to »how 

 pseudonychia, x 530. 



Fig. 9. Dorso-lateral view of right mucro 

 and part of dens, x 440. 



