322 Mr. R. S. Bagnall on new Thysanoplera, 



Family Phlceothripidae. 

 Docessissophothi'ips laticeps, sp. ii. 



<J . — Length 3*0 inni. 



Apterous. 



Colour dark retUlish-brown ; fore-tibIa3 and all tarsi 

 yeHowish. 



Head much as in D. nmpJicepft, Bagn., smooth and shining, 

 about 1'25 times as long as broad, ami viewed laterally onl^ 

 weakly arched compared with ampliceps and other species of 

 the genus. Eyes small and finely facetted, occupying about 

 0*2 length of head ; ocelli small and widely spaced, a long 

 biistle behind each posterior ocellus; two pairs of long post- 

 ocular bristles, the outer pair being the longer. Genal 

 spinelets few. 



Antennje black, about twice the length of head, joints 2—4 

 yellowish, 3 grey-brown at apex, and 4 shading to brown 

 apically ; 3-5 clavate. 



Prothorax strongly transverse, about 2"5 as broad as long 

 and 0*4 tlie length of head, all setaj long, at least those on 

 hind margin as long as the prothorax. Pterothorax transverse. 

 Legs long, fore-femora not very stout, with long setae at 

 outer edge near middle, all tibiae with long setse near knee, 

 fore-tarsus with tooth. Abdomen broad, with segments 

 strongly transverse, laterally with reddish patches as far as 

 segment 7 ; 8 routided sharply to 9, 9 only slightly nar- 

 rowed. Tube long and stout basally, 1*22 times tlie length 

 of head, narrowed to distal half, with a weak constriction 

 before apex ; surface smooth, but witii a scale-like sculpturing, 

 almost aciculate; apical hairs rather short, dark, only about 

 0'35 the length of the tube, those on 9 about 0*7 as long as 

 the tube, those on 6 and 7 longer than on 9, and on 8 shorter. 



Of the described species, D. ampliceps, Bagn. (Central 

 America), D. monstrosus, Bagn. (New Caledonia), D. majur, 

 Bagn. (no data), and X^.//-o//^a^/.s, Bagn. (Japan), this species 

 can oidy be compared with ampliceps, and is separated by its 

 broader and (viewed laterally) less strongly arclud head, the 

 tliree pairs of long cephalic bristles, the longer setaj on fore- 

 margin of prothorax, etc. It is the least extreme species of 

 the genus, whilst monstrosus is the most extreme. Only a 

 single example is known of each of these striking species, 

 which would seem to suggest extreme rarity or, perhaps, 

 specialized habitat ; the fad that Mr. Bryant found tlie 



