The Graspedosomatidse of North America. ^5 



Conotyla atrolineata (Bollm.). 



Craspedosoma atrolineatum Bollman: Proe. U. S. Nat. Mus. X, p. 618 

 (1887) ; Bulletin 46 U. S. Nat. Museum, pp. 35 and 183 (1893). 

 Plate VI, figures 95-100. 



Eyes rounded triangular in sliape, the ocelli in diagonal rows beginning 

 posteriorly 7+6+4+3=20, or 7+6+4+2=19. 



Antennse filiform, 2.5 mm. long, .14 thick, ratio of lengths of joints begin- 

 ning with the seventh, 3: 4.5: 8: 7.5: 10: 5.5: 1.5, the seventh being propor- 

 tionally longer than in other species of the genus. The antennse are somewhat 

 stouter than in fischeri and hoUmani, cf. figs. 64, 83 and 95. 



Gnathochilarium apparently not different from C. fischeri, except that the 

 lingual processes are strongly tridentate. 



First segment reniform; anterior margin and setigerous tubercles as in 

 C. fischeri. 



Subsequent segments with carinse rather large, swollen, surface finely reticu- 

 lated, anterior subsegment with about three transverse parallel ridges, some- 

 times concealed by the preceding segment. Between the anterior and posterior 

 subsegments there sometimes appears a row of small, bead-like ridges. 



Anal segment smooth, the posterior scarcely or not at all depressed. The 

 two anterior setse very close together, the others as in C. fischeri. 



Anal valves slightly convex, the j)Osterior margins nearly straight up to the 

 angulation which is quite sharp and equal to the anal segment. 



Preanal scale as in C. fischeri. 



Male genitalia of the anterior pair with (fig. 97) a large bulbous base, bifid 

 distally, the larger division laciniate-dentate at apex. The posterior pair of 

 genitalia (fig. 96) are much more complex than in hollmani or fischeri. 



Color light horn-brown, the carinse and a rather broad dorsal line darker, 

 sometimes very dark. 



Length 14 mm. ; width 1.3 mm. 



We have examined nine specimens referred to this species. 

 One mature male and two females. U. S. N. M. No. 439, from 

 Glacier, B. C; five immature specimens U. S. N. M. 332, from the 

 same place, and one female from Winona, Minnesota (No. 331). 



The type of this species was from Glacier, B. C, and we have 

 examined specimens from that localit}^ Mr. Bollman also re- 

 ported this species from Winona, Minn. (Coll. Holzinger). The 

 single female specimen is now in the National Museum. It has 

 three dark longitudinal lines, but the color is lighter than the t^'pi- 

 cal specimen, the animal considerably more robust, less attenuate 

 posteriorly. The arrangement of the ocelli is also different in 

 specimens from the two localities, cf. figs. 99 and 100. 



We would not be surprised if when the males are collected the 

 species will prove to be distinct. The great difference in habitat 



