PLATYPUS. 109 
Division PLaTYPi BILOBATI, Nov. 
Male. Scape narrow. Prothorax without pores or groups of punctures. Elytra punctate-striate, with the 
interstices alternate towards the apex, the 1st and 3rd more elevated and not declivous, the postero- 
lateral angles produced into a subvertical quadrate lobe. Third ventral segment armed with two spines, 
the fifth tuberculate. 
Female. Prothorax furnished with two small pores. Rows of punctures on the elytra substriate internally, 
not impressed towards the lateral margin, the third interstice somewhat prominent at the apex. Terminal 
depression vertical, impressed. 
35. Platypus biprorus, sp.n. (Tab. IV. figg. 19, ¢; 19a, apex of elytra; 194, 
abdomen: 20, 2.) 
Elongatus, angustus, piceus vel rufescens, elytris medio dilutioribus; prothorace oblongo, elytris tenuiter 
punctato-striatis. 
Long. 4 millim. 
Mas. Elytrorum interstitiis postice angustatis, subalternatis, 3° carinato, rugoso, haud declivi, angulo postico- 
laterali in lobum subquadratum producto; abdominis segmento 3° bispinato, ultimo tuberculato. 
Fem. Fronte fortiter substriato-punctata ; prothoracis sulco utrinque poro minuto ornato; elytrorum inter- 
stitiis 1°, 2° ad apicem subimpressis, 3° subelevato, ceteris angustatis longitudine subalternantibus. 
Long, narrow, piceous-brown or red, elytra paler in the middle; legs and underside, except the abdomen, 
ferruginous. 
Male. Front flat, dull, subrugose, with a median impressed point and a few deep punctures over the mouth. 
Prothorax oblong, irregularly punctured, closely towards the middle, the sulcus shallow. Elytra clearly 
striate, the interstices somewhat convex, narrowed, declivous, and subalternate towards apex, except the 
3rd, which is wider and horizontal behind, furnished with four or five transverse ridges, and terminating 
in an acute angle; 5th continued to the process, which is subvertical, slightly inclined inwards above, as 
long as broad, convex externally, concave internally, truncate at apex. Third ventral segment with two 
spines, the last with a spinous tubercle. 
Female. Front nearly flat, dull towards vertex, subnitid over the mouth, with deep scattered punctures and 
indistinct concentric striz round an impressed median point. Prothorax as in male, but with a small 
pore-like puncture on either side of the anterior extremity of the sulcus. Elytra with shallow punctured 
stris, weak towards sides and impressed at base ; interstices subconvex, becoming closely punctured and 
hairy at the apex, where the first two are narrowed and slightly declivous; the 3rd granulate at base, 
subelevated posteriorly ; apex scarcely declivous, the terminal depression subtriangular, with a well-defined 
superior margin, its lower border bisinuate, the lateral angles acute but not produced. 
Hab. Muxico (mus. Oxon.) ; GUATEMALA, Quiche Mountains, Capetillo, San Gerdénimo 
(Champion). 
Six examples, of which three are females. The structure of the elytra in the male 
is quite peculiar ; in the female it bears a certain resemblance to that of P. armatus, 2 , 
but the prothorax is furnished with pores. For the present P. diprorus may be placed 
after the Platypi filiformes in the neighbourhood of P. quadrispinatus, Chap. 
Division PLATYPI BICORNUTI, Chapuis. 
36. Platypus armatus. 
Platypus armaius, 2 (lege 3), Chap. Mon. Plat. p. 222, fig. 126°. 
Hab. Costa Rica, Irazu (Rogers).—CoLomBia?. 
Two examples. Though no typical specimen has been obtainable for comparison, 
