the Eavhj Sta<je.t o/ Paltostoma scliineri. 185 



been described by F. W. Edwards ^ as Li/gislorrhina uriclii. 

 The writer is tempted to prolong this digression, and to 

 linger in memory over the beauty of the spot where these 

 captures were made. One recalls the forest-chid ravine, not 

 penetrated by the direct sunlight up to the time of our 

 departure at 10"30 am. ; the cliff, with the water coursing 

 down it, and great tussocks of hanging grass growing in its 

 crevices ; a humming-bird visiting the scarlet clusters of 

 flowers on a tree (Bruivnea) by the side of the fall ; a great 

 blue Morpho settling on the rock close to the water, and two 

 Helicoidiis, with vivid orange-red patches on the fore wings, 

 circling over the frothing pool at the foot of the cascade. 



III. The Larva. (PI. IX. figs. 1-4.) 



Diagnosis. — Length 4-6 mm. Antennae short, two- 

 jointed. Dorsal surface furnished with stout spines. 

 Branchial filaments arranged in tufts, 10 filaments in 

 each tuft in the full-grown larva. J^ateral processes well 

 developed, simple, [jcdiform, ciliate, without long setae pro- 

 jecting beyond the ciliae. Sixth segment with only one 

 pair of lateral ])rocesses, and with its hind margin bearing 

 six long setae ajising from four places. 



The following is a more detailed description of the larva, 

 in the making of which I have been guided largely by Fritz; 

 Miiller's well-known and tine work (cited in list). 



Length, varying among thirty-nine larvae, from 4"5-6 mm. 

 One larva, only partly grown, measures only 3*25 mm. 



Colour above daik brownish ; the posterior margin of the 

 ce|)iialothoracic and of the four intermediate segments pale, 

 whitish; the rounded posterior margin ot" the terminal (sixth) 

 segment darker, blackish ; the anterior part of the cephalo- 

 thorux, comprising the five "cephalic areas " of F. Miiller, 

 is also somewhat infuscate, darker than the posterior part; 

 antennae blackish; lateral processes yellowish brown, ciliai 

 pale. Ventrally the colour is very much lighter, the median 

 part of each segment, surrounding the sucker, being 

 whiiish. 



Spines, Scales, ^c. — The disposition of the larger spines on 

 the florsal surface is described in detail below. But, besides 

 these, a very high power shows that the whole dorsal surface 

 bears, scattered at rather wide intervals, very minute, colour- 

 less, erect, shortly lanceolate scales, of the same nature as 

 those figured by F. Miiller on pi. 4, figs. 15, 16 of his vrork, 



* Ann. & Mu^-. Nat. Hist. ser. 8, vol. x. 1912, p. 203. The congeneric 

 X. sinyiilaris (Williston), which was the type of the genus Probokeus, 

 was found in 8t. Vincent. 



