OltlEXTAI. COIJ.EMBOLA, 111 



nvtennarum seciwdo ei tertio lonyltadine ipquus, vel jxiullo lovgior. 

 ,SeUe corporis longcp, infasciis instructce. Long. 3'5 mni. 



Head. — Invested with scales and pi'ovided with a prominent 

 dorsal tuft of large sub- erect setie. The eyes eight in number on 

 each side ; no post-antennal organs. 



Antennce. — Varying in length from 4 to 4'5 mm. ; the joints 

 very variable in length. The first two joints sub-equal ; the 

 fourth joint at least as long as the combined length of the second 

 and third joints. The exact numerical proportions in the length 

 of the antenna! joints of four typical specimens were 50 : 50 : 32 : 89 ; 

 55 : 54 : 37 : 95 ; 53 : 54 ; 34 : 88 ; and 51 : 51 : 35 : 86. The 

 two proximal joints clothed with scales and hairs, the distal joints 

 entirely clothed with hairs of various lengths. 



Trunk. — The segments related propoi'tionately in length as 

 14 : 9 : 6 : 11 : 6 : 37 : 5 : 2. Clothed with small lanceolate sccdes 

 densely packed together ; in the mid-dorsal line the scales 

 are considerably larger and oblong-ovate in shape. A prominent 

 investiture of large and very conspicuous sub-erect seUti with 

 curved extremities disposed in the following manner : — A " collar " 

 along the anterior margin of the mesothorax, a few scattei'ed 

 setfe of similar type on the dorsal aspect of the segment and a 

 group near the posteiior border. Similar groups are situated 

 near the posterior margins of the metathorax and the first two 

 abdominal segments. The third abdominal segment with a few 

 scattered set?e only. The four-th abdominal segment with a 

 conspicuous tuft of longei' and more slender setse about the 

 middle of its dorsal aspect, and a fringe of similar set*, directed 

 backwards, along its posterior and postero-lateral margins. The 

 fifth !ind sixth abdominal segments densely clothed with setae and 

 partially concealed by them. 



Legs. — The femora and basal joints scaled. The tibite distinctly 

 sepaiated into proximal and distal joints; tlie former related in 

 length to the latter as 19 : 7 on the third pair of legs, and as 17 : 7 

 on the first i)air of legs ; clothed with hairs and setfe of various 

 lengths. Tlie superior da ics of the feet lanceolate and acuminaite, 

 armed with twosmnll teeth (fig. 69); one tooth situated atadistance 

 from the base of the claw equal to one third the total length of 

 the latter, the second tooth situated at a similar distance from 

 the apex of the claw. The inferior claws lanceolate and acuminate, 

 iniarmed. Pseadovychia large, at least one half the length of the 

 inferior claw. A single stout tenent hair to each foot. 



Furcida. — In length varying from 2-5 to 2-75 mm. ; the ratio 

 of the length of the manubrium to that of the dens varying from 

 11 : 12 to 3 : 4 ; in the majority of examples, however, the ratio is 

 as 4 : 5. 'I'he nntcro large and somewhat plate-like; armed with 

 an outer and inner epical tooth, each provided with a slender 

 lateral tooth [)rolonged down the macro in the form of a j'idge. 

 The inner ••tpical tooth is continuous at its base with the dorsal 

 plate-like [tortion of tlie muci'o. The latter bears two large 



