MORGAN HEBARD 127 



Acroporoblatta adenophora =" new species (Plate XIX, figs. 5 and 6.) 

 This species l)ears Poroblotta cylindrica, here described, a strong 



general superficial resemblance. The major features of difference 



are pointed out under the discussion of that genus. 



Ttjpe. — 9 ; Cincinnati, Sierra Nevada de Santa Marta, Mag- 



dalena, Colombia. Elevation, 4000 to 5000 feet. July 10, 1913. 



(M. A. Carriker Jr.) [Hebard Collection, Type No. 449.] 



Size medium large for the group; form elongate, rounded cephalad and 

 caudad. Entire dorsal surface thickly but minutely punctulate, except laterad 

 on the pronotum, where the punctae are larger. Head proportionately larger 

 and much broader than in Poroblatta cylindrica; front portion deplanate, 

 thickly but minutely punctulate; eyes reduced, not projecting; interocular 

 space very broad, slightly wider than the space between the antennal sockets ; 

 ocelli small, smoothly concave except for a few punctae in dorsal portion, 

 irregular in outline. Maxillary palpi small, much as in Poroblatta cylindrica. 

 Pronotum as given in generic description, length proportionately considerably 

 greater than in Poroblatta cylindrica; latero-caudal angles weakly produced, 

 appreciably less than ninety degrees, sharply rounded; caudal margin almost 

 transverse, its lateral halves very feebly concave, showing a minute angulate 

 production at their juncture mesad. Tegmina and wings absent. IVIesono- 

 tum and metanotum with latero-caudal angles strongly produced, acute, their 

 apices sharply rounded; the caudal margins, as a result, strongly concave, 

 showing a minute angulate production mesad. Abdomen narrow and strongly 

 convex, slightly wider than in Poroblatta cylindrica. Cerci entire, the acute 

 apex very slightly projecting beyond the lateral curvature of the free margins 

 of the adjacent segments. Distal portion of abdomen except cerci, limbs and 

 their armament, pulvilli and arolia as given in the generic description of 

 Colapteroblatta. Limbs shorter and heavier than in Poroblatta cylindrica. 



Length of body, 24.6; pronotum, 8.3; caudal tibia, 5.2. \Mdth of head, 

 5.2; pronotum, 8.2; abdomen at widest point, 9.8 mm. 



Dorsal surface shining liver brown, becoming darker laterad on mesonotum 

 and metanotum and darker both laterad and caudad on abdomen. Pronotum 

 with lateral margins almost entirely ochraceous-buff, the decided punctae and 

 cingulate margin bay, the dark mesal portion of the pronotum with margins 

 suffused, forming an obtuse-angulate invasion laterad before the mesal point, 

 its margins thence parallel to the caudal margin of the pronotum. Head with 

 occiput chestnut, shading to deep liver brown at)ove clypeus, ocelli and genae 

 light buff, mouthparts warm buff. Limbs warm l)uff, the spines rus-set. 

 Ventral surface of abdomen shinuig, buffy proximad rapidly shading through 

 chestnut to blackish liver brown. 



An additional single immature specimen, bearing the same data 

 as the type, is before us. This individual is 14 mm. in length and 

 is similar to the adult, except that the gland-like swelling of the 

 lateral wings of the pronotum is not as conspicuous. 



^^ From SiSriv and (^opo = gland carrier. 



TRANS. AM. ENT. SOC, XLV. 



