188 bulletin: museum of comparative zoology. 



tioned, the somites being elsewhere ferruginous. The collum in front 

 of the middle has a transverse stripe of black which widens at the 

 middle and sends an acute branch to the anterior margin; in front 

 of this the border is yellow, with a disconnected mark of the same 

 color above each lateral end; elsewhere the collum is ferruginous with 

 over it a network of darker lines. The anal scutum is blackish, with 

 each free lateral border narrowly margined with yellow. Anal valves 

 dusky. Head ferruginous, with a conspicuous black mark in the 

 form of an inverted Y. 



Collum rounded below as usual, margined laterally. Not attaining 

 lower edge of second tergite. 



Pore in line with suture which curves strongly about it. Suture 

 weak, or obliterated in some cases, above. 



Anal scutum narrowly rounded caudally, much exceeded by the 

 anal valves which in side view protrude strongly convexly. 



Number of segments, forty-two. 



Length, 31 mm.; width up to 4 mm., the species being proportion- 

 ately stout. 



98. Rhinocricus parous Karsch. 



Zeits. naturwiss, 1881, ser. 3, 6, p. 68; Pocock, Journ. Linn. soc. London, 

 1894, 24, p. 491.1 



Habitat. — Porto Rico.^ 



99. Rhinocricus electus, sp. nov. 



Tijpe.~M. C. Z. 4,345. Cuba: Guantanamo, Mai Paso "EI 

 Palmar," April 3, 1913. C. T. Ramsden. 



A species like R. parous and R. holomelanus in having the posterior 

 margin of anterior somites above the scobina conspicuously bisinuate. 

 It is like R. holomelanus in having the pores high above the middle, 

 and has a similar habitus and general structure to that species but, 

 aside from being smaller, is readily distinguishable in having the 

 suture of the segments more strongly marked and traceable entirely 

 across the dorsum. Also in contrast with that species the segments 

 are annulate with flavoferruginous along the caudal border, these 

 light bands becoming more obscure caudad but very sharply defined 

 in the middle and anterior region. Collum black excepting for nar- 



