﻿270 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loo 



short, without spines. Labral tuft very large, occupying entire area 

 between clypeal spines. Subantennal sclerite very long, the basal 

 (subantennal) hair placed in basal half of head. 



Thorax (fig. 34, e) : With numerous stellate hairs composed of 15 

 to 30 or more very light spikes in each, each spike ending in two sharp 

 points, shafts minutely barbed, Prothorax with six pairs of stellate 

 tufts dorsad of pleural hairs ; hairs 1 to 3 arising from common basal 

 tubercle, 1 and 3 stellate tufts, 2 simple, arising back and just mesad 

 of 3; 4, 7, 8, and stellate tufts. Mesothorax with three pairs of 

 stellate tufts (hairs 1, 7, 8) dorsad of pleural groups; no thickened 

 hairs or spines ; hair 5 long, well developed, barbed. Metathorax with 

 bifid spines (hair 7) arising from a large sclerotized basal plate, the 

 small branch of spine a little more than two-thirds as long as the 

 larger, both slender and lightly pigmented ; four pairs of stellate tufts 

 (hairs 1, 3, 5, 8). Numerous stellate tufts ventrally. 



Abdomen (fig. 34, g) : With numerous stellate tufts on segments 

 I to VII, each tuft with 15 to 30 or more spikes similar to those on 

 thorax ; dorsally each segment with two pairs of tufts, anterior pair 

 smaller. Segment VIII with a pair of lateral sclerotized plates from 

 which arise the comb teeth ; five to eight comb teeth, middle teeth very 

 long and slender, dorsal teeth shorter, more heavily pigmented, smaller 

 ventral teeth may arise independently of plate (not more than two 

 seen). Pentad hair 1 a large stellate tuft; 2 long and simple; 3 with 

 about eight branches arising from the base; 4 long and simple; 5 

 shorter, simple. Siphon uniformly and very lightly pigmented as are 

 all its hairs, index 5 or a little less ; swollen dorsally just beyond the 

 base, slightly concave dorsally and convex ventrally ; apex narrowed to 

 about three-fifths of base ; six or seven pairs of dorsal tufts, each usually 

 with three barbed branches ; a pair of simple hairs ventrally at base, 

 followed by about 12 midventral tufts, mostly double, occasionally 

 triple, branches barbed; apicodorsal hair poorly developed, ventral 

 valve hair long, simple. Pecten of six or more inconspicuous, lightly 

 pigmented simple teeth, extending from base for more than two-thirds 

 of siphon. Anal segment with large, very poorly pigmented, incom- 

 plete saddle; posterior border of saddle with five or six very long 

 spines; saddle hair double; ventral tuft of five or six very short 

 branches ; ventral hair of dorsal brush simple, long ; dorsal tuft usually 

 5-branched ; all hairs with conspicuous barbs. Anal gills long, slender, 

 rounded at apex, almost twice as long as saddle. 



Types. — U. S. N. M. No. 59092 (holotype and paratypes) : 



Holotype and 10 paratypes, fourth-instar larvae collected in wild 

 banana stalk, Halavo, Florida Island, December 17, 1943 (R. L. Ingram 

 and M. Gould : K. L. Knight Coll. No. 839) . 



