400 PROCEEDINGS OP THE ACADEMY OF 



Scutellum small or absent, situated between the 



elytra. 



Mesosternum and intercoxal process of abdo- 

 men broad P r a o c i ni. 



Mesosternum and intercoxal process of abdo- 

 men narrow triangular Coniontini. 



Certain tribes admitted into this subfamily by Lacordaire have been sepa- 

 rated entirely. The Scaurini and Scotobiini have been separated from Crypto- 

 glossini, and the genera allied to Eulabis removed from association with Nycto- 

 poris, and Cerenopus from Cryptoglossa. The Sepidiini have been removed 

 from the Molurini. The genus Ogcoosoma must probably also be removed 

 from association with Moluris and Psammodes. The validity of the removal 

 of certain tribes and groups from the Asididae as received by Lacordaire, appears 

 to be still further substantiated by an examination of the manner in which 

 the pores of special sensibility are distributed on the terminal joints of the 

 antenna?.* 



While examing the Nycteliini in the collection of the Academy, I found under 

 Gyriosomus a species named " multilineatus Melly," which does not belong even 

 to the subfamily. I can find no reference to such a species, and no genus into 

 which it may properly be received. The hind margins of the third and fourth 

 ventral segments are coriaceous. This insect should undoubtedly form a 

 new genus near Gonopus and Anomalipus, with which it has many points of 

 resemblance. The following table of the three genera exhibits their relations : 



Kpistoma trapezoidal, broadly emarginate Gonopus. 



" rounded, triangularly " 

 Epipleura indistinct, body very convex E ctatocnemis. 



" broad, body flattened above and margined../ Anomalipus. 



In the genus above indicated the last joint of the antenna; is very small, the 

 anterior tibiae much more flattened than in Anomalipus, and have the external 

 apical angle prolonged into a tooth, and a median tooth to both anterior and 

 middle tibiae. The tooth existing on the posterior edge of the apex of the an- 

 terior tibiae in Anomalipus is not present in this genus. The prosternum be- 

 tween the coxae is bisulcate, as in the other genera, and declivous in front and 

 not lobed as in Gonopus. 



The species, for which I retain the name above given, is very robust. Head 

 broad, moderately coarsely punctured, with a vague impression each side of the 

 emargination. Thorax one-half broader than long, very convex, densely and 

 coarsely punctured, narrower in front, broadly emarginate ; sides strongly 

 rounded, narrowing posteriorly, angles acute, slightly prolonged, base emargi- 

 nate. Elytra broadly oval, very convex, humeri obtuse, partially covered by 

 the posterior angles of the thorax, costate, intervals with a less distinct elevated 

 line, on each side of which is a row of elevated points. 



The female is larger and more robust than the male, and the apical tooth of 

 the tibia broader and more obtuse. 



Length -9 inch. " Coquimbo." 



RHINANDRUS Lee. 



elongatus, elongate, black, subopaque, head long, very finely and 

 sparsely punctulate, thorax opaque, not punctured, scarcely longer than broad, 



* This character, in its application to this family, was first pointed out by Schioedte (Annals 

 and Magazine of Nat. Hist. Men., 1865, p. 192, note). Its true value is not yet, fully determined, 

 but from the lew observations made by myself it promises to be, at least, a very useful character 

 in fixing the relationships of genera, the positions of which are still in some doubt. 1 have but 

 casually mentioned this character, hoping to have leisure to develop it in its application to our 

 North American genera at some future day. 



[Dec. 



