and Central American Telephorinae. 81 



subparallel or very feebly dilated at the sides. Inner claw of an- 

 terior tarsi, and outer claw of the other tarsi, broadly lobed in (^. 



c^. Ninth ventral segment oblong; the partially evaginated 

 internal sac disclosing the tips of several pairs of spines and that 

 of a central flagellum, and dilated into a sharp tooth on each side 

 at the base. (Figs. 32, 32a.) 



Length (excl. head) 6^-7, breadth 2-2| mm. {^ ?.) 



Hab. Guatemala [Mus. Brit.), Quiche Mts. and the 

 slopes of the mountains above Duenas (Champion). 



Six males and one female. Very like Discodon melan- 

 cholicum {= triste), and with a similar large cruciform 

 black patch on the disc of the prothorax, but differing 

 from that species in the shorter and stouter antennae in 

 both sexes ; the male with one claw of each tarsus broadly 

 lobed at the base, and the narrow lateral notch of the pro- 

 thorax placed nearer the hind angle ; the female with the 

 sides of the prothorax deeply sinuate behind the middle. 

 D. nigropilosiim is also very like the present species, but it 

 has a differently-shaped prothorax, cleft (^ tarsal claws, 

 etc. Two males of P. tristiculus have been dissected, one 

 having the genital armature partly exposed. 



12. Polemius lineatocollis, n. sp. 



Moderately elongate, black, the base of the mandibles, and the 

 sides of the prothorax broadly (leaving a sharply-defined broad 

 black median vitta), yellow or reddish-yellow; clothed with fine 

 greyish-brown pubescence. Antennae rather stout, serrate, moder- 

 ately long, slightly tapering towards the tip, sparsely pubescent in 

 both sexes. Prothorax transverse, subquadrate; in (J with an 

 oblique notch on each side just behind the middle, in $ with the 

 sides distinctly sinuato-emarginate at the middle. Elytra slightly 

 wider tlian the prothorax at the base, moderately long, not or very 

 feebly ($) explanate at the sides. Inner claw of anterior tarsi 

 broadly, and outer claw of the other tarsi more feebly, lobed in ,^. 



(J. Eighth ventral segment feebly cleft, and the ninth rounded, 

 at the tip, a very elongate, extremely slender, straight flagellum 

 projecting from the internal sac. 



Length (excl. head) 5|-7, breadth 2-2| mm. (<S ?•) 



Hab. Mexico (Truqui), Amula, Xucumanatlan, Chilpan- 

 cingo, and Tepetlapa in Guerrero {H. H. Smith), Acapulco 

 (Hoge), Oaxaca {Mus. Brit., Salle), Etla (Salle). 



Sent in plenty from various places in Guerrero and 



TRANS. ENT. SOC. LOND. 1915. — PART I. (MAY) G 



