chamberlin: west Indian chilopoda and diplopoda. 209 



145. MiCROSPIROBOLUS LINEATUS, Sp. nOV. 



Type.— M. C. Z. 4,427. Parahjpes.— M. C. Z. 4,428. Haiti: 

 Diquini. W. M. Mann. 



This form is black along the sides with a continuous median dorsal 

 stripe of the same color which may be at intervals constricted so as 

 to present a beaded appearance but in no observed case broken into 

 distinct dots. Each side of the mid-dorsal black stripe a bright yellow 

 or orange stripe. Lower part of sides and venter also yellow or orange. 

 First two segments completely yellow or orange as is also the head 

 excepting above the level of the antennae where it is black. 



Head smooth. Pores 2 + 2. Eyes widely separated; ocelli 

 arranged in five or six transverse series, c. g., 6 + 5 + 5 + 4 + 2 

 and 4 + 5 + 6 + 5 + 3 + 2. 



Lower margin of collum on each side substraight, but corners 

 rounded; lower part of anterior border and ventral border margined. 

 Not striate. Transverse sulci complete dorsally though weaker 

 than laterally and ventrally. Scobina none. 



Anal scutum subtriangularly extended but strongly rounded cau- 

 dally. Anal valves mesally rather weakly margined. 



Number of segments, thirty-eight to forty-four. 



Length, (female) 22 mm. ; width, 2.2 mm. Male smaller. 



Cairibolus, gen. no v. 



Resembling Microspirobolus. Median plate of male gonopods 

 similarly elongate and broadly expanded distally, but distal margin 

 truncate, not mesally incised. Anterior gonopods more slender, 

 particularly the telopodites. Inner or posterior gonopod flattened 

 and plate-like as in the other genus but wholly lacking the two prongs 

 or hastate processes, being merely narrowly incised on the mesal side 

 with at most a short tooth at upper angle of incision. Labral pores 

 only 2 + 2. Collum narrowed at the sides. Scobina none. Anal 

 valves strongly marginate, the elevated borders limited by deep and 

 wide grooves. 



Tyj^e. — C. antonianus, sp. nov. 



