NEW AMERICAN ACARINA. 11 



seen to be free, terminated each side by a sliort stiff bristle, its surface smooth ; 

 superior bristles short, erect ; setse moderate, clavate ; abdomen large, globose, 

 high, smooth ; venter smooth, genital opening more than twice its length in front 

 of the very much larger anal opening ; legs short, just behind coxae I is a large 

 curved plate reaching to the upper corner of the cephalothorax ; coxal plate with 

 three complete lines. 



Quite common on the ground, under pieces of wood, bark, stones, 

 etc. Sea Clitf, N. Y. ; Ft. Lee, N. J. ; Washington, D. C. I have 

 two or three much smaller specimens which are proportionally nar- 

 rower and more depressed, but I think they are the same. 



SC'UTO VERTEX Mich. 



Tectal plate small, united to the cephalothorax ; no wings to ab- 

 domen ; legs with fusiform joints and simple hairs ; tarsi with three 

 claws ; genital opening some distance in front of anal opening. Of 

 the two species placed here one ( pilosus) has the claws equal ; the 

 other has the middle claAv the larger. The former would thus seem 

 to be an Oppia, but the tectal plate is quite different from that genus, 

 and moreover the two species appear to be otherwise very closely 

 related. 



Abdomen with prominent bristles, as long as the setae piloMiiS. 



Abdomen with only very short and fine hairs coiicolor. 



Sciitovertex pilosus nov. sp. — Length .8 mm. Yellow-brown; body 

 moderately high and convex, smooth ; tectal plate completely united to the ceph- 

 alothorax, reaching about half way to ti]i, two long bristles at tip, sui)erior bristles 

 long, erect ; setae of stigmata short and clavate ; dorsum of abdomen with about 

 eighteen or twenty long bristles in four rows ; venter finely granulate, genital 

 opening much more than twice its length in front of the larger anal opening, a 

 curved ridge just behind anal opening; coxal plate divided in the middle, a line 

 in front and behind on each side ; legs moderate, femora broad ; three equal 

 tarsal claws. 



Sea Cliff", N. Y. ; Ft. Lee, N. J. Quite common in crevices of the 

 bark of trees. 



Scutovertex coiicolor nov. sp.--Leugth .4 mm. Yellowish browu ; tec- 

 tal plate short, wholly united to ce]ihalothorax, truncate in front, terminated each 

 side by a bristle, superior bristles moderate ; setae quite long, clavate ; abdomen 

 somewhat depressed, smooth, longer than broad, with some scattered, very short 

 and very fine haii-s ; venter smooth or finely granulate, genital opening nearly 

 twice its length in front of the larger anal opening ; coxal plate divided and a 

 line each side in front and behind ; legs moderate, femoia quite broad ; tarsal 

 claws unequal, the middle being the largest. 



Sea CliflT, N. Y. In dead fungi. 



TRANS. AM. ENT. SOC. XXII. FEBRUARY, 1895. 



