134 Journal New York Entomological Society, [Voi. xvii. 



anal covers and when viewed from the side are seen not to project as far downwards 

 as the latter. 



Anterior pair of legs slightly longer than the cephalothorax. Claws stout. 



Length, 0.48 mm.; height, 0.32 mm. 



In trash. Collected by C. R. Crosby at Columbia, Mo. 



This species is easily recognized by the large hood projecting 

 from the abdomen, the median carina on the cephalothorax and the 

 pitted integument of the abdomen. 



Hoploderma hamatum, new species. (Plate VI, Fig. 36.) 



Pea green, with light yellowish brown tinge ; legs yellowish brown, integument 

 of both cephalothorax and abdomen pitted. 



Cephalothorax one half as long as the abdomen and two thirds as high as long 

 and possessing a median carina. Pseudostigma cup-shaped, situated at the extreme 

 postero-ventral aspect of cephalothorax ; pseudostigmatic organ long, simple, flagelli- 

 form, about four fifths as long as the cephalothorax, and much stouter towards the 

 distal than towards the proximal end. 



Abdomen long, rounded at posterior end, about one half as high as long. The 

 abdomen has a submedian row on each side of ten spatulate bristles, all inclined 

 backwards except the last two, which are ventral in position. There are several sim- 

 ilar bristles situated outside the submedian rows. From the anterior margin of the 

 abdomen there projects a small, chitinous band which maybe homologous to the 

 hood-like projection found in some species. 



Legs of moderate size ; ungues stout. 



Length, 0.48 mm.; height, 0.21 mm. 



Under a log. Collected by the writer at Areola, 111. 



Hoploderma illinoisensis, new species. (Plate VI, Fig. 37.) 



Light yellowish brown ; integument thin and brittle, pitted on the abdomen ; 

 integument of cephalothorax without pits. 



Cephalothorax twice as long as high. Pseudostigma flat, circular, situated at 

 the extreme postero-ventral aspect ; pseudostigmatic organ long, filiform, sickle- 

 shaped. Cephalothorax bearing a single pair of dorsal bristles, situated a little be- 

 hind the middle, straight, pectinate and about as long as the cephalothorax is high. 

 Abdomen two thirds as high as long ; anterior margin concave, inferior margin 

 convex. The abdomen is rather finely pitted and bears on its dorsum six longitudi- 

 nal rows of stout, straight, pectinate bristles ; six bristles in the two inner rows, five 

 in the next two outer rows and four in the two ventral rows. Genital covers rectan- 

 gular, almost twice as long as broad with a row of about eight small hairs on the 

 inner margin of each ; anal covers slightly larger than the genital covers, somewhat 

 rounded posteriorly and each bearing five simple hairs, one very large hair near the 

 middle, about as long as the anal cover itself, a similar hair posterior to this one, an 

 anterior hair about one third as long as the middle hair and two very small hairs on 

 the inner margin near the posterior end. 



