and Central American Telephorinae. 33 



two long narrow lobes ; [eighth segment not examined ;] ninth 

 ventral segment widened outwards, sinuato-truncate at the tip. 

 Length (excl. head) 4^-5j, breadth 1| mm. (^ $.) 



Hab. Mexico {Truqui in Mus. Brit. ; Coffin, in Mus. 

 Oxon.), Puebla {Salle : types), Chilpancingo in Guerrero 



A long series of this species is now available for examina- 

 tion, including a pair still "in copula." Various other 

 extremely closely allied Mexican forms are known, and a 

 fuller description is therefore required, D. anale being 

 recognisable by the peculiarly shaped last dorsal segment 

 (pygidium) of the male. Gorham seems to have over- 

 looked the close affinity of the present insect with his 

 Discodon cinereum, under which, however, he confused 

 various species. 



17. Discodon alticola, n. sp. 



Elongate, narrow, shining, finely cinereo-pubescent; nigro- 

 piceous or black, the sides of the head in front and the base of the 

 mandibles testaceous. Head together with the eyes as wide as the 

 prothorax in ^, narrower in ? ; eyes rather large and prominent in 

 (J, smaller in $; antennae (J') long, reaching to about the apical 

 third of the elytra, much shorter in $. Prothorax {^) slightly 

 broader than long, bicallose on the disc posteriorly, deeply, angularly 

 excised on each side at about the middle, the margins obliquely 

 diverging thence to the sharp hind angles, narrowly reflexed in 

 front of the excision, and gradually converging thence to the apex ; 

 ($) broader, strongly transverse, with the margins thickened and 

 reflexed to near the base and apex, obliquely converging anteriorly 

 and subparallel or converging behind, the hind angles rather pro- 

 minent. Elytra long, parallel. Inner claw of anterior tarsi, and 

 outer claw of the other tarsi, apparently cleft at tip, in ^. 



(J. Eighth ventral segment (apex only examined) carinate down 

 the middle, the apex narrow, feebly emarginate. 



Length (excl. head) 5-5i, breadth l|-2 mm. (^ $.) 



Hah. Mexico, Ciudad in Durango 8100 ft. {Forrer, Hoge). 



Three specimens. The two females captured by Forrer 

 were found placed under Discodon cinereum and carhonarium 

 respectively in the " Biologia " collection; the male was 

 taken many years later by Hoge at the same locality. The 

 male approaches D. carhonarium, from Quiche, the denti- 

 form lateral projection of the prothorax being much more 



TRANS. ENT. SOC. LOND. 1915. — PART I. (mAY) D 



