70 The Graspedosomatidse of North Avierica. 



CO]VOTYL,A gen. nov. 



Eyes of numerous (16-19)* prominent ocelli arranged in triangular patches. 



Antenna; long or very long, slender or sub-clavate; third joint longest. 



Mandibles with eleven pectinate lamellae. 



Promentum not distinct.* 



Segments with moderately xirominent, shoulder-like carinse. 



Anterior male legs with ventral face of the last Joint hispid with fine 

 bayonet-like spines. 



First two pairs of legs much smaller than the others; legs 4, 5 and 6 of 

 males somewhat crassate. 



Second legs of males with a cushion-like, cone-bearing process on the third 

 joint; legs 4 and 5 with a similar process on the fourth joint. 



Male genitalia of two distinct pairs, the posterior larger, attached to the 

 bases of the ninth legs. 



Ninth legs of male two-jointed, the distal joint oval, unarmed, without a 

 chitinous knob. 



Tenth and eleventh legs of male with large coxal apertures directed meso- 

 caudad. 



Eleventh legs of male with a meso-proximally directed process arising from 

 the base of the third joint. 



Segments of adult 30. 



Distribution — Northeastern North America, 



In addition to the above, the following characters are common 

 to all the species we have examined : — 



Body fusiform, broadest at about the 9th segment, narrowed abruptly ceph- 

 alad, and very gradually caudad ; in cross-section nearly circular, with rather 

 prominent lateral elevations. 



Labrum with the lateral teeth exceeding the middle one, but not projecting 

 as far as the sides of the labrum. 



Antennae with average ratio of length of joints 2.5: 4.5: 7-8.5: 7: 10:5: 1.5. 



Antepenultimate segment without carinas, that is, the surface between the 

 bristle-bearing tubercles is not elevated. 



Penultimate with its ventral portion nearly covered by the preceding seg- 

 ment. 



Anal segment with two long transparent papillae on the posterior trunca- 

 tion ; from each papilla springs a long slender bristle. 



The genitalia of the species of this genus are, as far as known, 

 double, that is consist of two entirely distinct pairs of structures 

 (e. g., plate IV, fig. 78), and in this respect offer a sharp distinc- 

 tion from those of Zygonopus and Trichopetalum, the nearest 



* The ocelli number 24, and a promentum is present in Conotyla Mhergi sp. 

 n., which is provisionally placed in the present genus, with which it appar- 

 ently has most afiinit3^ Males are not known. 



