150 BULLETIX 18 2, UNITED STATES NATIONAL MUSEUM 



Specimens examined. — I have examined 60 examples in the United 

 States National Museum, 5 in the American Museum of Natural His- 

 tory, and 9 collected by me in 1935-37. 



Bemarl's. — This species is readily distinguished by its fine and dense 

 sculpture, its feeble ridges, and the incurved submarginal ridge of 

 pronotum. 



It has been taken hi trash on banana boats, in fungus, in decaying 

 cocoa pods, and under bark of rotting logs. 



2. THORACOPHGRUS RECTANGULUS, new species 



Description. — Rufocastaneous. Head with side margins rather 

 strongly cxplanate; with a strong submarginal carina anteriorly from 

 above the antenna] fossa; vertex with two feeble ridges at middle. 

 Pronotwni one-fourth wider than long, one-sixth wider than 

 head ; anterior angles prominent ; sides slightly curved throughout 

 until just before basal angles, which are right; sides crenulate; with 

 a large fovea near each basal angle; with foui* longitudinal ridges. 

 the inner pair feeble, the submarginal pair abruptly deflected from 

 the anterior angles and without branches; disk without fine carinulae 

 but densely sculptured. Elytra one-fifth wider than pronotum and 

 one-fifth wider than long; sides feebly rounded with posterior angles 

 visible; with four longitudinal ridges of v.'hich only the outer is 

 carinate, without additional traces. Integuments with very dense and 

 moderately fine ground sculpture, feebler on abdomen. Length, 2 mm. 



Type locality. — Trinidad, 10 miles north of Arima, elevation 1,800 

 feet. 



Types. — Holotype, in Museum of Comparative Zoology, and one 

 paratype, in United States National Museum (No. 52401), collected 

 by N. A. Weber on March 28, 1935. 



Records. — The following is the only record known to me: 



Trinidad: Arima (Weber, in M.C.Z. and U.S.N.M.). 



Specimens examined. — I have seen only the two types. 

 Remarks. — This species differs from hrevicristatus principally in the 

 shape of the pronotum but also in details of carination. 

 I have received no record of its habits. 



3. THORACOPHORUS BREVICRISTATUS (Horn) 



Glyptoma hrevicristaUis Hor.N, 1871, p. 332. — Sharp. 18S7, p. 726.— Hrnshaw, 

 1898, p. xliii. 



Thoracophorus hrevicristatus (Horn) Fauvel, 1878a, p. 176; 187Sc, pp. 11, 12. — 

 Sharp, 1887, p. 726.— FAm-EL, 1002, pp. 32. 33.— Bernhauek and Schubert, 

 1910, p. 25.— Leno and Mutchler, 1914, p. 4()o.— ScHEratPELTz. 1933, p. 1020. 



Description. — Castaneous to rufocastaneous. Head with margin 

 rather strongly explanate, especially the sides posteriorly; with a 

 strong submarginal carina anteriorlv from above the antennal fossae; 



