192 bulletin: museum of comparative zoology. 



aside from the obviously smaller size, it differs in various details, 

 important among which is the presence of scobina. The posterior 

 borders of the somites are flavous only part way to the suture instead 

 of all the way. The suture is dorsally weaker. The anterior portion 

 of somites of more deep color. The suture is curved distinctly away 

 from the pore (i. e., the convexity is caudad). Striae only below, ex- 

 tending much less high up than in R. mandevillei. 



Number of somites, forty. 



Length near 29 mm.; width, 3.2 mm. 



107. Rhinocricus furctanus, sp. nov. 



Typc.— M. C. Z. 4,359. Paratypc.~M. C. Z. 4,360. Haiti: 

 Furcy. W. M. Mann. 



A small species like the Jamaican R. solitarius which it resembles in 

 structure. It is like that species in having but forty-three or forty- 

 four segments. It differs in having the second tergite extended much 

 below the collum and not flattened or excavated below. The anterior 

 portion of the somites is not obviously transversely striolate, and the 

 longitudinal striae below and in front of the sulcus are strictly longi- 

 tudinal like those caudad of the suture, not directed obliquely upwards 

 as in R. solitarms. The pore is in line with the suture which curves 

 about it. The suture disappears above in a slight or obsolete furrow 

 as in R. solitarius. Anal valves not at all or but very slightly com- 

 pressed, not at all margined, exceeding the anal scutum which is 

 smooth and shining like the valves. 



The head is light chestnut-brown with a black mark on the face 

 something in form like an inverted Y. Collum colored like the head 

 excepting a black band along the anterior border. Anal scutum and 

 valves shining black. Other segments in front of the suture black, 

 including numerous minute light dots on each side below level of pore 

 which are evident under magnification; behind the suture light brown 

 or somewhat ferruginous with a narrow stripe along the posterior 

 border above the level of the pores a brighter yellow or nearly white. 



Number of segments, forty-three or forty-four. 



Length, about 34 mm.; width, 3.3. mm. 



