308 ACADEMY or NATURAL SCIENCES 



The male in my specimens is of a palev color than the female. 

 It differs from the atra nob., by having the striae of the elytra 

 much less deeply impressed. 



The palpi are all terminated by a joint formed like a reversed 

 triangle ; it therelorc belongs more properly to the genus AUe- 

 cala of authors. 



2. C. atua; — Blackish-brown, with short hair* ; striae of the 

 elytra deeply im})ressed. 



C^teht atra Melsh. Catal. [243] 



Body nearly black, with a tinge of brown, with numerous short 

 blackish hairs, arising from punctures : head transversely indented 

 between the eyes; autonnaj dark fuscous, nearly half as long as 

 the body, terminal joints somewhat ovate, and slightly petiolated : 

 thorax with the posterior angles subacutely rounded : elytra 

 with rather deeply impressed, punctured striae : beneath dark 

 rufo-piceous. 



Length three-tenths of an inch. 



It may be distinguished from the preceding, by the form of 

 the terminal joints of the antennae, as well as by the more deeply 

 impressed striae. 



[The name having been previously employed, this species has 

 jjcen described by Dr. Melsheimcr as AUecida nlijrans. — Lec] 



MORDELLA L. Fabr. 



1. M. TKiiASCiATA. — Testaceous, disk of the thorax and three 

 bands of the elytra black. 



Morddla trifaacldta !Melsh. Catal. 



Body pale testaceous : head immaculate : thorax with the disk 

 and anterior margin black : elytra with a black band at base, 

 arregular on its posterior edge, and extending a short distance 

 ■ down the ^^uturc ; another on the middle, rather narrower at the 

 suture, and a third at tip : l)cneath, excepting the pectus, dull 

 j)ico«us, slightly yellowish sericeous : feet pale. 



Viength one-tenth of an inch. 



1. M. ATTK.NUATA. — Pale rufous ; thorax with a black spot ; 

 elytra black, with an abbreviated rufous vitta. 



Drsr. Body rufo-tcstaccous : antennae black, four basal joints 

 pale rufou.s : tburax with a large black spot on the anterior disk: 



[Vol. V. 



