520 Ml'. C. O. Watcrliouse on 



Fi]/.'^. 10, U. Licmopfiora dubm, vav. latior, Mer. Santa Catalina 



Island. ^. 

 Fi(/.<. lL'-14. LicmophoraflabeUnta, var. parva, Mer. Figs. 12 & 13, Sau 



Pedro; fig. 14, Monterey, -y- 



-, . 600 



rigf.\b,\^. Grammatophora costata,'Mev. Monterey. -^ ■ 



Fig. 17. Fragilaria spicula, Mer., fixed on a Nitzschia. Santa Monico. — . 



Fins. 18-20. Nitzschia spiralis, 'Slei: : the same frnstnle in three different 



positions. San Pedro, -y • 



_ ... . 600 



Fig. 21. Rhabdmema, sp. Northern California. -^. 



900 



2%. 22. Ditto. Part of a valve at y. 



Fig. 23. Chcetoceros incurvus, var. angmta, Mer. San Pedro, -j- . 



/■"■^i^s. 24-27. Eunotoyrumma, sp. San Pedro, -j-- 



LXVI. — jTujo »iew Genera of Coleoptera belonging to the 

 Cupesidfe and Prionidge. By Chas. 0. Waterhouse, 

 F.E.S. 



The British ^luseum has lately received a small collection 

 of Coleoptera from Rio Janeiro. It contained two remark- 

 able orenera, which I have no hesitation in describing as new. 

 One belongs to the Cupesid^e, but differs from all known 

 species in the form of the head and in having smooth an- 

 tennae; the other to the aberrant Prionidse, and is allied to 

 Mysieria. 



Cupesidae. 

 Tetraphalekus, gen. nov. 



General form and characters of Cupes. Head elongate, 

 narrowed anteriorly. Eyes somewhat prominent. Antennae 

 smooth and shining, nearly as long as the head and thorax 

 taken together, widely separated, placed in a deep impression 

 near the base of the mandible, the impression continued poste- 

 riorly beneath the head close to the eye and forming a deep 

 channel, so that the antenna can lie in it when at rest. The 

 two grooves are rather wider posteriorly, so that the Hat 

 under surface of the head between them is narrower behind 

 than in front. The mentum is small, concave, longer than 

 broad, obliquely narrowed in front, rectilinear at the sides. 

 [The palpi are wanting.] The maxillary palpi have the 

 apical joint fusiform, rather more narrowed at the base 

 than at the apex. Mandibles very prominent, incurved and 

 enlarged at the apex, where they are bisinuate. Thorax a 



