110 RH YNCHOPHORA. 
they agree so well with the description as to make their identity almost certain. They 
present, however, one feature about which Chapuis is silent: the bases of the 2nd and 
4th elytral interstices, and most noticeably the latter, bear each a small upright spine 
or tubercle situate in the middle of the depressed area, and readily mistaken for a pore 
when seen through the microscope. These tubercles may have been overlooked by 
Chapuis, but their absence in the type would hardly indicate any specific difference, 
as their size varies in these two specimens. 
Division PLatyP!I TERMINATI, Chapuis. 
37. Platypus marcidus, sp. n. (Tab. IV. fig. 21, apex of elytra, ¢ .) 
Mas. Sordide stramineus, capite et prothoracis plaga ante sulcum infuscatis, elytris ad apicem nigricantibus ; 
fronte media striga brevi impressa; prothorace subquadrato; elytris lineato-punctatis, interstitiis ad 
apicem angustatis subcarinatis, serratis, 1° et 3° magis elevatis, margine apicali integro, depressione 
terminali parva subquadrata. 
Long. 4 millim. 
Male. Dirty testaceous-yellow, head infuscate, elytra blackish at apex. Front subconvex, areolate and rugose, 
with deep scattered punctures along the oral border and sides, in the middle with a short linear impression, 
from which a subelevated line runs to the median line of the vertex, which is longitudinally impressed. 
Prothorax quadrate, the sulcus short and rather deep, preceded by a triangular infuscate patch, the surface 
of which is dull, finely strigose, with a subelevated median line, remainder of surface shining, the punc- 
tuation very irregular, close along the sulcus and basal margin. Elytra lineato-punctate, the sutural stria 
impressed throughout; the interstices flat, with a few piliferous punctures on the 3rd and 5th and the base 
of the former punctate, their apical portions narrowed and tuberculate, the 1st and 3rd elevated into 
serrate carine, the 2nd and 4th abbreviated and not reaching the hind margin, which is entire, obliquely 
rounded at the sides, and subtruncate in the middle; apical depression smali, vertical, subquadrate, 
separated laterally from the oblique side-margin by a row of tubercles continued from the extremity of 
the 3rd interstice, and terminating in an angular prominence on the lower border of the elytra. 
Hab. PaNaMa, Volcan de Chiriqui (Champion). 
One example. Quite like P. ustulatus, 2 , but larger, with the prothorax broader, 
the head smoother in front and more strongly punctured, and the apical border of the 
elytra entire when seen from above. 
38. Platypus ustulatus. 
Platypus ustulatus, 3 2 (lege 2 3), Chap. Mon. Plat. p. 224, fig. 127°. 
Hab. Mexico, Toxpam (Sailé1), Teapa (H. H. Smith). 
We possess types of both sexes from M. Sallé’s collection. In addition, a single male 
was taken by Mr. Smith, also in Mexico. 
39. Platypus excisus. 
Platypus excisus, 3 Q (lege 2 Sd), Chap. Mon. Plat. p. 225, fig. 128°. 
Hab. Mexico, Toxpam (Sallé1); Guaremata, Zapote, Capetillo, Sabo and Cubilguitz 
in Vera Paz (Champion); Panama, Volcan de Chiriqui (Champion). 
