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$65 



Genus Liacarus Michael. 



Mandibles chelate; legs I and II approximate, as also legs 

 III and IV; lamellae present; body smooth; last three pairs of 

 legs inserted under the body. 



KEY TO SPECIES. 



1. Abdomen almond-shaped lucid us. 



Abdomen oval 2. 



2. Color brown; integument thin and delicate mi nut us. 



Color black; integument thick and resistant 3. 



3. Translamella with a central cusp niger. 



Translamella without a central cusp nitidus. 



Liacarus lucidus, n. sp. (PL XXXIV., Fig. 9.) 



Light pea-green; integument thin and brittle; surface 

 smooth. 



Cephalothorax long. Lamella? two thirds as long as ceph- 

 alothorax. They are blades on edge, of almost uniform width, 

 and without cusps; lamellar hairs about as long as lamella?, 

 curved and pectinate; translamella similar to lamellae but only 

 about half as broad. Pseudostigmata funnel-shaped; pseudo- 

 stigmatic organ stout, short, pectinate, clavate, and slightly re- 

 curved; interlamellar hairs subequal to lamellar hairs but in- 

 clined away from the median plane; palpi prominent. 



Abdomen almond-shaped, dorsum with four rows of short, 

 curved bristles, of which there are about six in each of the 

 outer rows and four in each of the inner ones. 



Legs short, subequal; femora slightly enlarged. 



Length, 0.48 mm.; breadth, 0.28 mm. 



Collected by the writer at Areola, 111. Several specimens. 



Liacarus minutus, n. sp. (PI. XXXV., Fig. 10.) 



Brown; integument thin and delicate. 



Cephalothorax rather short; lamella" narrow, being mere 

 blades on edge, two thirds as long as the cephalothorax, and 

 each bearing a long, straight, pectinate lamellar hair, as long 

 as the lamella- themselves. Rostrum broad but somewhat 



