Vol. Xxiv] ENTOMOLOGICAL NEWS. 123 



FAMILY CRYPTOPIDAE. 

 Cryptops navigans sp. nov. 



Color yellow or yellow of dilute ferruginous cast. 



Head widest near middle, from where the sides, which are convex, 

 converge strongly caudad, more abruptly so toward corners, and also 

 cephalad; the anterior margin convexly rounded, a little indented at 

 middle; caudal margin straight. Sulci not evident. Hairs of moderate 

 length, sparse. 



First dorsal plate with a distinct, transverse cervical sulcus well re- 

 moved from the margin of head. The sulcus is angularly bent back 

 toward the middle, though narrowly rounded at median line. There 

 are no paired longitudinal sulci, but there is a median longitudinal fur- 

 row as on subsequent plates. 



No paired sulci evident on second plate, but these are traceable on the 

 third and become more distinct caudad. Last plate apparently without 

 a median sulcus. 



Prosternum not manifestly punctate; without furrows. Anterior 

 margin convex, slightly indented at middle line ; bearing no bristles, 

 but a pair of these borne one each side of median line a little distance 

 caudad of the margin. Bristles of general surface sparse. 



Ventral plates not manifestly punctate in the types. Last ventral 

 plate with sides convex, more strongly rounding toward and about the 

 caudal corners ; caudal margin widely weakly convex or substraight 

 across the median portion. 



Coxopleurae ectocaudally subtruncate, the inner portion of caudal 

 margin extending obliquely mesocephalad to inner edge. Bearing along 

 caudal edge several spines and toward mesal border two or three long 

 stout spinescent bristles. 



Spiracles of medium size ; circular. 



Tarsi of anterior legs uniarticulate, or not movably articulate. X<>t 

 armed with spines. Hairs sparse. 



Prefemur of anal legs with numerous spines over surface, a longi- 

 tudinal smooth area on mesal surface. Femur similarly armed, but 

 with spines fewer on and toward dorsal surface, where they are re- 

 placed by simple hairs; also bearing on ventral surface toward distal 

 end a single acute tooth. Tibia bearing on mesal side three spines and 

 <m ventral surface a longitudinal series of four teeth, which increase in 

 size distad; otherwise bearing simple hairs. First tarsal joint bearing 

 ventrally two teeth, of which the more distal is much the larger, other 

 wise clothed with simple hairs. Second tarsal joint bearing only hairs. 



Length, ii mm. 



Locality. Clipperton Island. Two specimens. 



